Logik l32digb20

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #21
    Re: Logik l32digb20

    Yes but that answers the question anyway. I do not think you have a main board fault but check PSON voltage just in case.
    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.

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    • sordids999
      Badcaps Legend
      • May 2013
      • 2149
      • uk

      #22
      Re: Logik l32digb20

      which one is the PSON please tom ?

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #23
        Re: Logik l32digb20

        It should be labelled: PS_ON, PSON, STBY, REM, REMOTE, PWR, POWER... something along those lines, on the PSU connector.
        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

        • sordids999
          Badcaps Legend
          • May 2013
          • 2149
          • uk

          #24
          Re: Logik l32digb20

          Thats the problem tom the psu does not give you any of that i have attached a picture on the back of the psu
          Attached Files

          Comment

          • sordids999
            Badcaps Legend
            • May 2013
            • 2149
            • uk

            #25
            Re: Logik l32digb20

            right i think i have found a problem

            PIN 1-4 is GND
            PIN 5-8 is 24 Volts they are all reading 24 Volts

            PIN 1-2 is 12 Volts they are reading 11.7 Volts
            PIN 3-5 is GND
            PIN 6-9 Is 5 Volts (6 7 8 are reading 4.9 Volts but pin 9 is only 1.1 Volts )

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #26
              Re: Logik l32digb20

              From the pictures:
              1, 2 = 12V
              3,4, 5 = GND
              6, 7, 10, 11 are 5V
              8 is 5VSTBY
              9 is some kind of controlled pin. Does it change when TV is off and when TV is on.
              The PS/-ON seems OK if you are getting the 24V and 12v which is turned on by PS_ON from the main board.
              Last edited by budm; 02-22-2014, 09:10 PM.
              Never stop learning
              Basic LCD TV and Monitor troubleshooting guides.
              http://www.badcaps.net/forum/showthr...956#post305956

              Voltage Regulator (LDO) testing:
              http://www.badcaps.net/forum/showthr...999#post300999

              Inverter testing using old CFL:
              http://www.badcaps.net/forum/showthr...er+testing+cfl

              Tear down pictures : Hit the ">" Show Albums and stories" on the left side
              http://s807.photobucket.com/user/budm/library/

              TV Factory reset codes listing:
              http://www.badcaps.net/forum/showthread.php?t=24809

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #27
                Re: Logik l32digb20

                I thought you said P/S voltages were unstable? What changed?
                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

                • sordids999
                  Badcaps Legend
                  • May 2013
                  • 2149
                  • uk

                  #28
                  Re: Logik l32digb20

                  Nothing mate if you read back one minute the back light comes on then another time it flashes thats where i get the unstable voltages

                  Comment

                  • flocko
                    Badcaps Legend
                    • Nov 2012
                    • 1121
                    • uk

                    #29
                    Re: Logik l32digb20

                    As i have said before check the regulators you have a problem with that adjustable regulator the second one up change that and your set will be fine, just take care on these boards the pads lift if you use to much heat, i prefer to cut the legs close to the body and apply more solder to the tab to remove it, same with legs after body is removed clean up pads and put on new regulator with lots of flux.

                    Comment

                    • sordids999
                      Badcaps Legend
                      • May 2013
                      • 2149
                      • uk

                      #30
                      Re: Logik l32digb20

                      ok so im looking for this regulator any ideas where to get one ?
                      BM1117-ADJ 10354 YT

                      thanks

                      Comment

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #31
                        Re: Logik l32digb20

                        Its a standard 1117. Use TLV1117 as a sub.

                        The input voltage is low, the output voltage is OK, the GND pin is OK. (It is probably a -50 variant for a 5V regulator.)
                        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

                        • sordids999
                          Badcaps Legend
                          • May 2013
                          • 2149
                          • uk

                          #32
                          Re: Logik l32digb20

                          thanks tom ill look around and order one

                          Comment

                          • tom66
                            EVs Rule
                            • Apr 2011
                            • 32560
                            • UK

                            #33
                            Re: Logik l32digb20

                            Which regulator are you replacing - care to highlight it?
                            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

                            • sordids999
                              Badcaps Legend
                              • May 2013
                              • 2149
                              • uk

                              #34
                              Re: Logik l32digb20

                              going of flocko`s reply ill change the one he said (ive circled it in the picture) i must admit it would be easier for me to change the whole main board but everywhere are out of stock
                              Attached Files

                              Comment

                              • tom66
                                EVs Rule
                                • Apr 2011
                                • 32560
                                • UK

                                #35
                                Re: Logik l32digb20

                                It is my personal opinion that the regulator is working and you have a PSU fault or a bulb to panel arc fault, but there's nothing stopping you being thorough. To remove it, I'd use a soldering iron, heat up the tab pin flooding it with solder, then the other pins, and alternate until the device is loose, then lift it up. It should take no more than a minute to remove it.

                                It is a 1117 ADJ type replace with ADJ variant (TLV1117-ADJ)

                                That is CORE VOLTAGE (1.2V~1.3V) for CPU, probably standby voltage. Main power will use a buck converter. If you have an OK picture and TV seems like it'll enter and leave standby fine, then I would not expect it to cause the fault.

                                If you could check the PS ON signal that would rule out the main board completely.

                                What could cause bulbs to flicker?
                                - Main board fault - sending erroneous DIM/BLON command to inverter
                                - Main board fault - sending erroneous PSON command to PSU
                                - Power board fault - unstable output voltages under load
                                - Inverter fault - bad capacitors or output arcing due to load cap failure
                                - Bulbs - arcing to frame intermittent
                                Last edited by tom66; 02-23-2014, 06:16 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

                                • sordids999
                                  Badcaps Legend
                                  • May 2013
                                  • 2149
                                  • uk

                                  #36
                                  Re: Logik l32digb20

                                  its a strange one just turned it on again you can hear a arcing noise coming through the speakers where the backlight is constanly flashing the LOGIK logo flashes up but then goes off,then again if i turn it off and on again the backlight flashes once then nothing
                                  i can pick up a psu for 25.00 tempted to try that i can always send it back if its the main board i suppose

                                  Comment

                                  • flocko
                                    Badcaps Legend
                                    • Nov 2012
                                    • 1121
                                    • uk

                                    #37
                                    Re: Logik l32digb20

                                    You need a 1117 ADJ SOT-223 1 amp get it of ebay under £2.00, you did not check the regulator on the bottom the one under the 3,3v one, these all cascade so check this one as well. and the reason why the board is hard to come by is that the regulators fail and the board is replaced and not repaired, plenty of power boards/inverters and Tcons because there not a problem with this set. Flocko

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                                    • sordids999
                                      Badcaps Legend
                                      • May 2013
                                      • 2149
                                      • uk

                                      #38
                                      Re: Logik l32digb20

                                      yes i forgot sorry pin 1 going from the left of the regulator is
                                      PIN 1 5.15 Volts
                                      PIN 2 3.26 Volts
                                      PIN 3 2.02 Volts

                                      Comment

                                      • flocko
                                        Badcaps Legend
                                        • Nov 2012
                                        • 1121
                                        • uk

                                        #39
                                        Re: Logik l32digb20

                                        But what part number has it got on it if its a 33 then its fine if it is ADJ then that also is defective,i must now have a rant when you say you will buy a power board and if that does not work i will send it back, you have just hit a nerve, i sell parts that are all tested and working and when some one like you returns it saying it does not work it cost me money,as in a lot of cases with main boards and T,cons i have no way to test again as the set is long gone, so please do not do this only buy boards that you know will rectify your fault and if you still have the same fault after fitting the board then only return it if you know it to be faulty, Rant over Flocko

                                        Comment

                                        • sordids999
                                          Badcaps Legend
                                          • May 2013
                                          • 2149
                                          • uk

                                          #40
                                          Re: Logik l32digb20

                                          @flocko i apologise for my post but in no way would i lie to someone i would have been honest to the buyer and admit it has not fixed my problem,and would not tell them there part is faulty

                                          Comment

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