32" Goodmans TV

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #61
    Re: 32" Goodmans TV

    Hmmm...

    It's tempting to buy a new main board.

    I can get one for £20.

    I will first try to find the actual fault with this board.

    I don't think the inverter is faulty; see previous post. Disconnecting it shows similar problems.

    Although, the 24V line to the inverter, while LED is flashing, is at 9.5V - 10.5V, changing slowly between values... very odd...
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • dumpystig
      Badcaps Veteran
      • Jul 2011
      • 485
      • UK

      #62
      Re: 32" Goodmans TV

      There's plenty about these bloody boards thats odd...

      Gona do some more testing, back soon
      System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #63
        Re: 32" Goodmans TV

        Originally posted by dumpystig
        There's plenty about these bloody boards thats odd...

        Gona do some more testing, back soon
        Thanks for your help.

        The 24V line looks rather odd indeed... see scope trace

        Bouncing from 8.5V to 11V at... guess what frequency.

        [If you guessed 3 Hz, you'd be right.]

        Everything in this PSU is sync'd to this 3 Hz signal! Where is it coming from? The only thing I can think of is the STBY_ON_OFF line... and the only place that comes from is the VCTP.

        To test the display I plugged it into my Xbox 360 (got it off someone for cheap because of a broken disc tray, was easy to repair.) It was working perfectly, albeit making that rather annoying buzzing sound. Then I turned it off. I turned it on again, and briefly (half a second) there was an image (from Xbox) but then it switched off, and the LED started blinking... and it's been doing that even since.

        I'm thinking software issues because I did turn it off by the plug. If it was writing to that eeprom at the time then who knows? It could be corrupted. I was using component video inputs, but I don't think that would matter.
        Attached Files
        Last edited by tom66; 07-24-2011, 06:45 AM.
        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • dumpystig
          Badcaps Veteran
          • Jul 2011
          • 485
          • UK

          #64
          Re: 32" Goodmans TV

          Does your M/b have the extra HDMI x2 daughterboard?
          I'm still prefering the sort-it-myself approach, up to now anyways.....

          I don't think my inverters are faulty either, I can get the TV running fine most times, but this intermittent fault is really pissing me off. It's the start init procedure that is screwing up - I'm getting dropouts on the inverter start V from the M/b [PL803/1] so sometimes the b/l comes on then turn straight off and it goes into the marvellous LED-doing-different-flash-sequences-as-it-pleases-just-to-perplex-me-even-more sequence...
          System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

          Comment

          • dumpystig
            Badcaps Veteran
            • Jul 2011
            • 485
            • UK

            #65
            Re: 32" Goodmans TV

            Like yourself I'm struggling understanding these boards. Ive been having different displays re: that marvellous little blue LED, sometimes a 1Hz flash for about 2m before solid, other times 5-6 1Hz flash before solid... but at least I am able to get the set running most of the time.
            System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

            Comment

            • dumpystig
              Badcaps Veteran
              • Jul 2011
              • 485
              • UK

              #66
              Re: 32" Goodmans TV

              Yeah, I was thinking about the EEPROM, I think I read somewhere amongst all the data I have on these boards that it is re-written (from VCTP?) when initialising a factory reset... not 100% certain tho'.
              System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #67
                Re: 32" Goodmans TV

                Originally posted by dumpystig
                Does your M/b have the extra HDMI x2 daughterboard?
                I'm still prefering the sort-it-myself approach, up to now anyways.....

                I don't think my inverters are faulty either, I can get the TV running fine most times, but this intermittent fault is really pissing me off. It's the start init procedure that is screwing up - I'm getting dropouts on the inverter start V from the M/b [PL803/1] so sometimes the b/l comes on then turn straight off and it goes into the marvellous LED-doing-different-flash-sequences-as-it-pleases-just-to-perplex-me-even-more sequence...
                Mine only has one HDMI port. I read about the daughter board but mine doesn't have it.

                Originally posted by dumpystig
                Like yourself I'm struggling understanding these boards. Ive been having different displays re: that marvellous little blue LED, sometimes a 1Hz flash for about 2m before solid, other times 5-6 1Hz flash before solid... but at least I am able to get the set running most of the time.
                It is very bizarre. The TV is very poorly designed. Why is there a resistor soldered on top of the board between two holes? The footprint was the wrong size, but they didn't want to update the design... Also, why is there a diode inbetween two capacitor shaped footprints? There's another diode occupying a cap footprint... It's just crazy bad design.

                I can't get mine to power up at all any more. It's just dead to the world....

                Originally posted by dumpystig
                Yeah, I was thinking about the EEPROM, I think I read somewhere amongst all the data I have on these boards that it is re-written (from VCTP?) when initialising a factory reset... not 100% certain tho'.
                How do I get it to do a factory reset, though? That's the question...



                A question for you, what does your PFC bus read at when the set is on? Should be ~400V. Mine's at 328V. I'm wondering if it could be the problem...
                Last edited by tom66; 07-24-2011, 07:10 AM.
                Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                Comment

                • dumpystig
                  Badcaps Veteran
                  • Jul 2011
                  • 485
                  • UK

                  #68
                  Re: 32" Goodmans TV

                  Originally posted by tom66
                  How do I get it to do a factory reset, though? That's the question...
                  Can only be done with display running, service mode on remote MENU, 4, 7, 2, 5.

                  What resistor? If you mean R084 it's a 2W and it's mounted above the board to allow heat dissipation.
                  And I've no idea why the change with the diode/caps?
                  System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

                  Comment

                  • dumpystig
                    Badcaps Veteran
                    • Jul 2011
                    • 485
                    • UK

                    #69
                    Re: 32" Goodmans TV

                    Where are you measuring? I'll power it up now.
                    System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

                    Comment

                    • dumpystig
                      Badcaps Veteran
                      • Jul 2011
                      • 485
                      • UK

                      #70
                      Re: 32" Goodmans TV

                      HAHA the bugger came on 1st time....

                      Across C819:

                      STBY - 327VDC
                      RUN - 390VDC
                      System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

                      Comment

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #71
                        Re: 32" Goodmans TV

                        Originally posted by dumpystig
                        Can only be done with display running, service mode on remote MENU, 4, 7, 2, 5.

                        What resistor? If you mean R084 it's a 2W and it's mounted above the board to allow heat dissipation.
                        And I've no idea why the change with the diode/caps?
                        It's not supposed to be mounted like that; you can clearly see the marking on the board intended for a smaller resistor, but they didn't have one, so they used a bigger one... a bit bodgy.

                        Of all things, the PSU is actually pretty well laid out. The main board is just dodgy.

                        Originally posted by dumpystig
                        HAHA the bugger came on 1st time....

                        Across C819:

                        STBY - 327VDC
                        RUN - 390VDC
                        Yeah so mine is stuck at 328V when in standby and when it is on.

                        Looks like I need to get it to turn on to reset it... i'll try jumpering pin #6.
                        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK

                          #72
                          Re: 32" Goodmans TV

                          Hmm

                          Connected STBY_ON_OFF to 5V(main) through 220 ohm resistor. Light stopped blinking and went solid. Press power button on remote. Starts blinking again.

                          ????
                          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                          Comment

                          • dumpystig
                            Badcaps Veteran
                            • Jul 2011
                            • 485
                            • UK

                            #73
                            Re: 32" Goodmans TV

                            STBY_ON_OFF should be:

                            STBY - 1V7
                            RUN - 0.6V (mine is always 54-56mV)
                            System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #74
                              Re: 32" Goodmans TV

                              Originally posted by dumpystig
                              STBY_ON_OFF should be:

                              STBY - 1V7
                              RUN - 0.6V (mine is always 54-56mV)
                              Yea so connecting it to 5V makes it go into standby mode. So when the LED is lit solid, it is in standby.

                              The processor is trying to turn the TV on! But... why?
                              Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                              For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                              Comment

                              • dumpystig
                                Badcaps Veteran
                                • Jul 2011
                                • 485
                                • UK

                                #75
                                Re: 32" Goodmans TV

                                Thing is, you are inputting a level to the VCTP whereas it is an output from VCTP
                                System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

                                Comment

                                • dumpystig
                                  Badcaps Veteran
                                  • Jul 2011
                                  • 485
                                  • UK

                                  #76
                                  Re: 32" Goodmans TV

                                  Originally posted by tom66
                                  The processor is trying to turn the TV on! But... why?
                                  That's what it's meant to do. Amongst all the other things it does VCTP controls PSU on/off. When STBY_ON_OFF is high (1V7) its in stby, then when VCTP sends it low (0.6V or less) it powers up the PSU into full run mode.
                                  System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

                                  Comment

                                  • tom66
                                    EVs Rule
                                    • Apr 2011
                                    • 32560
                                    • UK

                                    #77
                                    Re: 32" Goodmans TV

                                    Originally posted by dumpystig
                                    That's what it's meant to do. Amongst all the other things it does VCTP controls PSU on/off. When STBY_ON_OFF is high (1V7) its in stby, then when VCTP sends it low (0.6V or less) it powers up the PSU into full run mode.
                                    Hmm. Yes, I know that the VCTP is powering the set on/off. The issue I'm having is it starts doing this as soon as power is plugged in. Trying to turn itself on. It never used to do that...
                                    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                                    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK

                                      #78
                                      Re: 32" Goodmans TV

                                      Originally posted by dumpystig
                                      Thing is, you are inputting a level to the VCTP whereas it is an output from VCTP
                                      Yea, I am. I'm trying to override the signal from the VCTP using the 220 ohm (to prevent damage to the IC.) I'm able to get it to stick in standby and the VCTP seems happy with it. Then when I ask it to exit standby and go to RUN mode, it starts flashing again.
                                      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                                      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                      Comment

                                      • dumpystig
                                        Badcaps Veteran
                                        • Jul 2011
                                        • 485
                                        • UK

                                        #79
                                        Re: 32" Goodmans TV

                                        Yeah, it's not meant to power on until either RC or side buttons are used... odd. How about we both post a list of all V's we have @ PSU PL connectors - both STBY and RUN if possible?
                                        System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

                                        Comment

                                        • tom66
                                          EVs Rule
                                          • Apr 2011
                                          • 32560
                                          • UK

                                          #80
                                          Re: 32" Goodmans TV

                                          Originally posted by dumpystig
                                          Yeah, it's not meant to power on until either RC or side buttons are used... odd. How about we both post a list of all V's we have @ PSU PL connectors - both STBY and RUN if possible?
                                          Can't get it to go into run mode, but here's STBY voltages measured relative to case

                                          PL801:
                                          pin #1 - NC
                                          pin #2 - NC
                                          pin #3 - NC
                                          pin #4 - 10.5V (jumps from 9.5V - 11.5V)
                                          pin #5 - 10.5V (jumps from 9.5V - 11.5V)
                                          pin #6 - 0.001V
                                          pin #7 - 0.001V
                                          pin #8 - NC
                                          pin #9 - NC
                                          pin #10 - NC

                                          PL802:
                                          pin #1 - 10.5V (jumps from 9.5V - 11.5V)
                                          pin #2 - 10.5V (jumps from 9.5V - 11.5V)
                                          pin #3 - 10.5V (jumps from 9.5V - 11.5V)
                                          pin #4 - 10.5V (jumps from 9.5V - 11.5V)
                                          pin #5 - 10.5V (jumps from 9.5V - 11.5V)
                                          pin #6 - 0.001V
                                          pin #7 - 0.001V
                                          pin #8 - 0.001V
                                          pin #9 - 0.005V
                                          pin #10 - NC
                                          pin #11 - 0.001V
                                          pin #12 - 0.004V

                                          PL803:
                                          pin #1 - 0V
                                          pin #2 - 0V
                                          pin #3 - 0.1V
                                          pin #4 - 0V
                                          pin #5 - 0.06V
                                          pin #6 - 1.76V
                                          pin #7 - 24.32V (decays slowly - tuner bias voltage?)
                                          pin #8 - 3.34V
                                          pin #9 - 0V
                                          pin #10 - 0V

                                          PL812:
                                          pin #1 - 1.85V
                                          pin #2 - 1.85V
                                          pin #3 - 0V
                                          pin #4 - 0V
                                          pin #5 - 0V
                                          pin #6 - 0V
                                          pin #7 - 0V
                                          pin #8 - 0V
                                          pin #9 - 0V
                                          pin #10 - 3.34V
                                          pin #11 - 3.34V
                                          pin #12 - 5.08V

                                          PL813:
                                          pin #1 - 3.5V (moves slowly between 3V and 4V)
                                          pin #2 - 3.5V (moves slowly between 3V and 4V)
                                          pin #3 - 0V
                                          pin #4 - 0V
                                          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                                          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                          Comment

                                          Related Topics

                                          Collapse

                                          • momaka
                                            Seasonic B12 BC-550 – barely 2 years old and with BAD CAPS already!
                                            by momaka
                                            I know I've been a little scarce lately (like the last 2-3 years), but I'm still here and still doing my thing with fixing PSUs.

                                            For today's considerations, I have a Seasonic B12 BC-550 [A551bcafh] 550 Watt ATX power supply for you (click on links for full size images).

                                            https://www.badcaps.net/filedata/fetch?id=3591771


                                            https://www.badcaps.net/filedata/fetch?id=3591772

                                            It's a modern ATX unit with fixed (non-modular) cables and an 80-plus bronze certificate. Here's the label:

                                            https://www.badcaps.net/filedata/fetch?id=359177...
                                            03-12-2025, 03:42 PM
                                          • Paxman_Swede
                                            Identifying caps on an old Zoom 9000
                                            by Paxman_Swede
                                            Hello!

                                            I have two projects on my work bench. One is a friends dead JBL Xtreme speaker with a blown voltage regulator and corresponding bulged and shorted cap. That cap has clear markings so I know what replacement I need for it.

                                            The other project however is a whole different deal. It's a Zoom 9000 guitar effect from the 90th that has developed a devil hound howl when there is no input from the guitar. I'm guessing caps problem. So, since I don't really use this effect anymore I thought it would be a perfect project to learn on.

                                            I have studied the board and...
                                            01-14-2025, 09:51 AM
                                          • captain150
                                            Help with switching power supply caps
                                            by captain150
                                            I'm trying to repair two old VCRs, they both have bad caps. One has leaky ones, the other would barely run until I subbed in some caps from another power supply I had laying around (though they are the wrong values). This vcr works for an hour or two, but then the power supply starts whining and the picture gets lines in it. I didn't replace all the secondary caps, so another voltage might still be problematic, or the values I used are too far off.
                                            I've been on mouser and digikey but the options are a bit overwhelming. I just need some new ones that will work. They don't need to be top quality,...
                                            03-16-2025, 07:34 PM
                                          • Foetuss
                                            Gigabyte GA-6OXT :: caps question
                                            by Foetuss
                                            Good evening

                                            I recently aquired a rev 1.1 Gigabyte 60XT, and was suprised of the amount of leaking caps for a motherboard of the P3 era. Especially the way the 330µf caps seems like the housing discolored even.
                                            Now, there are some 3300µF 6.3V KZG series around the CPU. Would it be OK to replace them with something like EEUFR1A332 ? (Panasonic FR 3300µF 10V). Or was this board designed around very low ESR caps?

                                            But I was also suprised about the bigger boys, which are 330µF 25V.
                                            Could it be they used 25V caps because they were cheaper / available at that time?...
                                            02-11-2025, 12:22 PM
                                          • momaka
                                            EVGA e-GeForce 7600 GS AGP 256MD2 [256-A8-N542-T2] with bad caps - fixed
                                            by momaka
                                            I did it again – I had to fulfill my inner desire to fix yet another old piece of hardware. This one is actually kind of worthwhile, too – it’s an EVGA e-GeForce 7600 GS AGP video card, model P/N: 256-A8-N542-T2. With the popularity of “retro” PCs from the Win9x to XP era going up, and the diminishing supply of decent AGP cards, it is expected their prices will go up. Or is it? I bought the this video card rather on the cheap side (~$9 USD shipped to my door), because the eBay seller listed it for parts or repair (and correctly noted the bad capacitors.)

                                            So, here is the...
                                            06-06-2020, 04:39 PM
                                          • Loading...
                                          • No more items.
                                          Working...