Possible Polaroid TLX-04244B Purchase....

Collapse
X
Collapse
+ More Options
Posts
 
  • Time
  • Show
Clear All
new posts
  • Paul678
    Badcaps Veteran
    • Nov 2011
    • 402

    #1

    Possible Polaroid TLX-04244B Purchase....

    The lady told me:

    "My husband turned it on one day and then i think the electric socket shorted. The blue light turns on when you turn the tv on but the screen is just black, that same week our PS3 died that was plugged into the same outlet."

    She also claimed that the sound was still there, and that she has the original
    remote and the power cord.

    We agreed to $10.

    I'm thinking that the +24V going to the inverter has died out, or perhaps
    a fuse on the inverter has opened.

    What do you guys think?
  • bigdozer
    Member
    • Jan 2011
    • 46
    • USA

    #2
    Re: Possible Polaroid TLX-04244B Purchase....

    Give her 5 bucks for the Ps3.

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #3
      Re: Possible Polaroid TLX-04244B Purchase....

      $10 ain't bad. I struggle to get TVs for 4x 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

      • Paul678
        Badcaps Veteran
        • Nov 2011
        • 402

        #4
        Re: Possible Polaroid TLX-04244B Purchase....

        Originally posted by tom66
        $10 ain't bad. I struggle to get TVs for 4x that.
        How about FREE? Haha! She just gave it to me
        to pick up!

        Spent about $2 in gas so far.......

        But there doesn't seem to be any sound, just the blinking
        blue LED, and no picture at all (even when I hold a bright
        flashlight to the screen, I cannot see anything).

        So my problem is a bit different than the other threads
        on this same model.

        Thanks for any advice.....I'm gonna check voltages.
        Last edited by Paul678; 01-15-2013, 12:25 AM.

        Comment

        • Paul678
          Badcaps Veteran
          • Nov 2011
          • 402

          #5
          Re: Possible Polaroid TLX-04244B Purchase....

          Ok, the +24V is there, as is the +12V and +5V.

          The "STB" was +3.8V, which is a bit over 3.3, but
          might be ok.

          "APWM" going to the main board was +4.5V, and the
          "BK_ON" was zero volts.

          So it looks like the power supply may be good, although
          I didn't check the high voltage inverter output, which
          is integrated on the power supply, but I have a feeling
          it's the main board that is bad.

          Anyone have any experience with this model?

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #6
            Re: Possible Polaroid TLX-04244B Purchase....

            I'll suggest jumping BL ON to 5V via a resistor to see if it kicks the backlights on, this lets you rule out the power supply.
            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

            • Paul678
              Badcaps Veteran
              • Nov 2011
              • 402

              #7
              Re: Possible Polaroid TLX-04244B Purchase....

              Originally posted by tom66
              I'll suggest jumping BL ON to 5V via a resistor to see if it kicks the backlights on, this lets you rule out the power supply.
              Yes, good idea.

              I used a 1k resistor, and the backlights turn on, so definitely
              the power supply/inverter is good. I tried using the jumper
              with the main still hooked up, but the main was pulling the
              BK_ON side short to ground, so I had to disconnect the main
              board first.

              I tried to do the fluorescent lamp trick of holding one conductor
              to the inverter output, to see if the lamp lights, but when i
              disconnected the real CCLFs, a red LED on the PS started
              blinking, and there didn't appear to be a high voltage on the
              output.

              Ok, according to this site:

              http://www.justanswer.com/tv-repair/...lue-light.html

              ....I have a bad main board. Unfortunately, it's a gamble, because someone else replaced the main board, and while the picture came up, it was
              distorted badly:

              http://www.tomshardware.com/forum/54...olaroid-04244b

              Since I got this set for free, I suppose I could gamble on the main
              board on Ebay......

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #8
                Re: Possible Polaroid TLX-04244B Purchase....

                That only happens if the panel setting is set incorrectly.
                Make sure the main board panel setting matches what is installed. A good seller will list what panel board was pulled from.
                Even better, sometimes it will let you change the setting.
                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

                • Paul678
                  Badcaps Veteran
                  • Nov 2011
                  • 402

                  #9
                  Re: Possible Polaroid TLX-04244B Purchase....

                  Originally posted by tom66
                  That only happens if the panel setting is set incorrectly.
                  Make sure the main board panel setting matches what is installed. A good seller will list what panel board was pulled from.
                  Even better, sometimes it will let you change the setting.
                  Ok, I don't see any DIP switches on the main board, and I
                  don't know where to look for the panel setting.

                  Here are some pics:

                  http://www.ebay.com/sch/i.html?_trks...at=0&_from=R40


                  The is a marker, "DIP SMD" silkscreened on the board....dunno it that
                  is what you're talking about.

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #10
                    Re: Possible Polaroid TLX-04244B Purchase....

                    Panel setting is almost always in EEPROM, on main board.
                    There is the possibility of transplanting EEPROMs. Do ya feel lucky punk? Well, do ya?
                    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

                    • Paul678
                      Badcaps Veteran
                      • Nov 2011
                      • 402

                      #11
                      Re: Possible Polaroid TLX-04244B Purchase....

                      Originally posted by tom66
                      Panel setting is almost always in EEPROM, on main board.
                      There is the possibility of transplanting EEPROMs. Do ya feel lucky punk? Well, do ya?
                      Shit, well should I cancel my ebay order then?

                      It doesn't sound like a good gamble to me.....

                      Comment

                      • gilly1984
                        Badcaps Veteran
                        • Jun 2012
                        • 751
                        • UK

                        #12
                        Re: Possible Polaroid TLX-04244B Purchase....

                        Similar to what my bush was doing, except, blue light means its in standby, no light meant it was on, but had no lights or sound.

                        Had an ipos psu in it too.

                        https://www.badcaps.net/forum/showth...highlight=bush
                        Do NOT touch heatsinks when testing for voltages as they may be LIVE!

                        Comment

                        • Paul678
                          Badcaps Veteran
                          • Nov 2011
                          • 402

                          #13
                          Re: Possible Polaroid TLX-04244B Purchase....

                          Fuck yeah!!! The main board was bad!!!

                          Watching this killer picture!! The biggest set i've
                          fixed yet!!! 42"!! Huge!!!

                          Comment

                          • martyparish
                            Badcaps Veteran
                            • Dec 2012
                            • 313
                            • United States

                            #14
                            Re: Possible Polaroid TLX-04244B Purchase....

                            That's a sweet deal Paul! I also got very lucky with a 55" proscan lcd for $40. Turned out to be a few bad caps

                            Comment

                            • Paul678
                              Badcaps Veteran
                              • Nov 2011
                              • 402

                              #15
                              Re: Possible Polaroid TLX-04244B Purchase....

                              Originally posted by martyparish
                              That's a sweet deal Paul! I also got very lucky with a 55" proscan lcd for $40. Turned out to be a few bad caps
                              You just HAD to rain on my parade, and brag about how
                              much bigger your TV is!!

                              I spent $40 on the main board on Ebay, so about the same
                              as you.

                              kick ass!! i love this hobby/job!

                              time to make some $$$$$$$$$!!!!!!!! hHAHAHAHAAA!!!

                              Comment

                              • martyparish
                                Badcaps Veteran
                                • Dec 2012
                                • 313
                                • United States

                                #16
                                Re: Possible Polaroid TLX-04244B Purchase....

                                Haha, no any (almost) free flat screen is a good one! I'm constantly on the prowl for TVs now lol. I won't be selling any until all of my kids and other close family members have nice TVs

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK

                                  #17
                                  Re: Possible Polaroid TLX-04244B Purchase....

                                  My dad now has a 50" NEC plasma because of me, and he loves it. It looks frigging awesome. So I'm on the hunt for a 42" or 50" Panny plasma (I'd settle for NEC though!) for student dorms...
                                  Last edited by tom66; 01-29-2013, 09:04 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

                                  • martyparish
                                    Badcaps Veteran
                                    • Dec 2012
                                    • 313
                                    • United States

                                    #18
                                    Re: Possible Polaroid TLX-04244B Purchase....

                                    I love my panny plasma(50"). Had to pay retail for that one though! ($1000 three years ago)

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK

                                      #19
                                      Re: Possible Polaroid TLX-04244B Purchase....

                                      But it'll probably last another 10 years or 20 years no problem... Their newer sets are quite unreliable though , older ones built like tanks.
                                      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

                                      • x_orange90_x
                                        Vizio E55-E1 bad backlights or bad inverter?
                                        by x_orange90_x
                                        I just got this tv today and it appeared to have no backlight on. After taking off the rear cover and checking again in the dark I can see that MAYBE one quadrant is lit.. But still it's quite dim. I was going to check the LEDs with my tester, and I found LED 1 and LED 2 + pins on the wire from the inverter, but I couldn't identify a ground. Nonetheless I tried using a mounting screw on the inverter board and also the chassis as ground but regardless my tester reads 300 which is what it reads when there is no voltage draw.

                                        I don't know how exactly to test the inverter itself. Is it...
                                        01-29-2025, 09:24 PM
                                      • Gentian
                                        APSINT3636VR 3600W APS INT Series 36V DC 230V AC Inverter/Charger schematic
                                        by Gentian
                                        I have a tripp-lite aspint 3636vr inverter charger which blow some of mosfet transistors. I replaced them repaired also the driver circuit and tested but the mosfets burn again.

                                        It work very well as inverter and also as charger if I let the rear switch in auto mode (inverter) and charger only(charging) but in auto when I connect the feed line 220V AC first time it pass ok to line and start charging the batteries but when I remove the feed line it pass to inverter mode and if I do it again the second time when passing from charging to inverter the Main transformer start making a...
                                        03-06-2023, 07:07 AM
                                      • valvashon
                                        Insignia NS-LCD19-09 (PS OK, Inverter problem?)
                                        by valvashon
                                        For some reason I'm just not going to let this 19" TV defeat me. I guess because I have a schematic to work from I feel like I'm oh so close.

                                        History- while adding a turn-on circuit I let a small screw roll under the power board. Worked through all of that circuitry, probably replacing a MOSFET and PWM controller that were not bad but I was following the service manual. Finally figured out that the power supply is in working order when the inverter section (for the backlights) is disconnected. When the +12 supply to the inverter is disconnected the +12 and +5 will come up...
                                        01-04-2024, 01:44 PM
                                      • eccerr0r
                                        A modified sine wave inverter + a grid tie inverter?
                                        by eccerr0r
                                        If I had a solar fed grid tie inverter (GTI), a modified sine wave inverter, and a power outage occurred, what would happen if you disconnected mains, backfed the modified sinewave inverter (MSI) into house power, and hooked up the GTI to the output of the MSI, would it work?

                                        Next thing is trying to charge the batteries using solar power, but that's another issue ...
                                        08-31-2023, 09:14 PM
                                      • caseyjay_48
                                        Sony KDL-46BX450 Inverter Troubleshoot Logic
                                        by caseyjay_48
                                        I am currently on a troubleshoot of 46” Sony KDL-46BX450 tv. I came back from Washington to Texas on medical emergency and had to leave all my tools up there. All I have is a couple of screwdrivers and a dvm. I wish to ask the community a troubleshooting question. Please forgive stupid questions as meds I am taking produce brain fog.
                                        I have well maintained Sony KDL-46BX450. It went black one day. After turn-on, I get solid green light and Sony logo in screen center for about 1-2 seconds, then black. No blinking LEDs, no hissing. Flashlight test shows screen characters dimly viewable,...
                                        09-23-2022, 08:08 PM
                                      • Loading...
                                      • No more items.
                                      Working...