Polaroid FLM-4034b issues

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • landyboy
    Badcaps Veteran
    • Apr 2013
    • 443
    • USA

    #1

    Polaroid FLM-4034b issues

    Ok since you guys helped me fix my first set I picked up another one to try. Its a Polaroid FLM-4034b. It will power up to a blue screen with the words no input. I can get the menu to come up but thats it. It does click and pop a little and every so often it will make a loud buzz. The screen also appears to have random lines running through it at times. The screen also goes through different color patterns. I have opened it up and there are no "visual" signs of bad capacitors. Any ideas? thanks
  • johnboy1313
    Badcaps Legend
    • Nov 2012
    • 1959
    • USA

    #2
    Re: Polaroid FLM-4034b issues

    I've fixed several Polaroids similar to this one. It's more than likely either bad caps that aren't bulging or a main board going bad. These seem to be the only issues with these sets. Do you have an ESR meter? Can you post pics of your power supply and main board?

    Comment

    • johnboy1313
      Badcaps Legend
      • Nov 2012
      • 1959
      • USA

      #3
      Re: Polaroid FLM-4034b issues

      Also, since it looks like you got the other one fixed. It would be nice of you to follow up on that thread and post what the fix was and that it is working. It helps anyone that might be having the same issue with the same set in the future.

      Comment

      • landyboy
        Badcaps Veteran
        • Apr 2013
        • 443
        • USA

        #4
        Re: Polaroid FLM-4034b issues

        Yes I can get pics. I do not have an esr meter. I am out of town for a couple days I will post pics as soon as I get home. And yes I will update the other post.

        Comment

        • johnboy1313
          Badcaps Legend
          • Nov 2012
          • 1959
          • USA

          #5
          Re: Polaroid FLM-4034b issues

          It's possible that you have a bad cap or two in the PSU, but I'm suspecting a bad main. I had a Polaroid FLM-323B with similar problems. The blue screen showed, the menu would show but the input screen wouldn't. It turned out to be a bad main board.

          Comment

          • landyboy
            Badcaps Veteran
            • Apr 2013
            • 443
            • USA

            #6
            Re: Polaroid FLM-4034b issues

            Here are some pics...
            Attached Files
            Last edited by landyboy; 05-04-2013, 10:59 AM.

            Comment

            • landyboy
              Badcaps Veteran
              • Apr 2013
              • 443
              • USA

              #7
              Re: Polaroid FLM-4034b issues

              Did some checking main boards are hard to find for this model. Can the main board be fixed? Should I look for bad caps or is there something else I should look for?

              Comment

              • landyboy
                Badcaps Veteran
                • Apr 2013
                • 443
                • USA

                #8
                Re: Polaroid FLM-4034b issues

                Should I check for bad Voltage Regs on the main?

                Comment

                • johnboy1313
                  Badcaps Legend
                  • Nov 2012
                  • 1959
                  • USA

                  #9
                  Re: Polaroid FLM-4034b issues

                  You can check the regulators, I've had four of these style TVs come across my bench in the last couple months. One of them had bad caps. The other three were all main boards. I checked all of the regulators and DC-DC converters and didn't find anything out of whack. If you haven't already, it wouldn't hurt to check the voltages coming from the PSU.

                  Comment

                  • landyboy
                    Badcaps Veteran
                    • Apr 2013
                    • 443
                    • USA

                    #10
                    Re: Polaroid FLM-4034b issues

                    Ok I found a what I believe to be an adjustable regulator out of tolerance.

                    1084 PE
                    Pin1 1.356
                    Pin2 2.603
                    Pin3 4.222

                    According to the chart provided on Badcaps pin 1 should be reading 0. Am I correct?

                    Comment

                    • landyboy
                      Badcaps Veteran
                      • Apr 2013
                      • 443
                      • USA

                      #11
                      Re: Polaroid FLM-4034b issues

                      I read the chart wrong, I think the reg is good. Pin2 is Pin1 plus 1.25v sorry.

                      Comment

                      • landyboy
                        Badcaps Veteran
                        • Apr 2013
                        • 443
                        • USA

                        #12
                        Re: Polaroid FLM-4034b issues

                        Voltages from the PSU are correct.

                        Comment

                        • landyboy
                          Badcaps Veteran
                          • Apr 2013
                          • 443
                          • USA

                          #13
                          Re: Polaroid FLM-4034b issues

                          I took some additional pics of the different phases of the screen.
                          Attached Files

                          Comment

                          • landyboy
                            Badcaps Veteran
                            • Apr 2013
                            • 443
                            • USA

                            #14
                            Re: Polaroid FLM-4034b issues

                            Thoughts?

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #15
                              Re: Polaroid FLM-4034b issues

                              Definitely looks like a main board issue to me.

                              The large BGA processor with the heatsink has probably overheated, this is introducing errors into the processing of the video.

                              You can try reflowing the processor, but it would only be a temporary measure, at best.
                              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

                              • landyboy
                                Badcaps Veteran
                                • Apr 2013
                                • 443
                                • USA

                                #16
                                Re: Polaroid FLM-4034b issues

                                Ok finally got back around to this one. Ordered a replacement main board and now I have this. I'm thinking another bad main board?
                                Attached Files

                                Comment

                                • budm
                                  Badcaps Legend
                                  • Feb 2010
                                  • 40746
                                  • USA

                                  #17
                                  Re: Polaroid FLM-4034b issues

                                  That looks like Gamma voltage problem on the T-CON board like this SAMSUNG.
                                  http://s807.photobucket.com/user/bud...?sort=3&page=1
                                  All the connectors are properly seated?
                                  Last edited by budm; 11-14-2013, 02:58 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

                                  • Dgtech
                                    E. Technician
                                    • Apr 2009
                                    • 1462
                                    • Steeler

                                    #18
                                    Re: Polaroid FLM-4034b issues

                                    Looks more like T-conn board failure to me.
                                    The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

                                    Comment

                                    • johnboy1313
                                      Badcaps Legend
                                      • Nov 2012
                                      • 1959
                                      • USA

                                      #19
                                      Re: Polaroid FLM-4034b issues

                                      Could be T-Con, but could be a bad main as well. What does the menu look like with no signal applied?

                                      https://www.badcaps.net/forum/showthread.php?t=27876
                                      Last edited by johnboy1313; 11-15-2013, 06:01 AM.

                                      Comment

                                      • kevinjo
                                        Member
                                        • Aug 2014
                                        • 49
                                        • USA

                                        #20
                                        Re: Polaroid FLM-4034b issues

                                        I also have the solarized video but it is not the tcon as I have tried 2 known working tcons. I think there is a main board issue but unsure where to look. Anyone have any ideas? Thanks. Mine is a FLM-3232.

                                        Comment

                                        Related Topics

                                        Collapse

                                        • jkruns
                                          M1 A2338 screen and touchbar issues after cleaning up liquid damage
                                          by jkruns
                                          Hello everyone,

                                          This is my first post after browsing this wonderful treasure trove of knowledge for many, many evenings. I've decided to learn how to fix these things, properly.

                                          My patient is an A2338 Macbook Pro M1 (late 2020).

                                          It had some corrosion around JT710 and JT700 caused by liquid spill, as well as against the protective barrier around the USB-C chips UF000 and UF100. So I took the main board out and cleaned it with a toothbrush and alcohol, then with alcohol in an ultrasonic cleaner. Cleaned the touchbar flex connectors as well. The board looks...
                                          04-22-2024, 06:45 AM
                                        • Ryan.man
                                          Macbook 2017 with touchbar (A1706) won't turn on after removing the screen
                                          by Ryan.man
                                          Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!

                                          My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.

                                          This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
                                          02-04-2025, 12:23 PM
                                        • aazjo
                                          A1502 screen only issues
                                          by aazjo
                                          I have a MBP A1502 (early 2015, 820-4924) with a screen that will not turn on. I have swapped screens with a cracked test screen and the computer boots and the cracked screen works for both backlight and image. The black/blank screen appears to do nothing.

                                          I have collected resistant data from the cracked screen connector pins and submitted to OBData server:

                                          1 PPVOUT_SO_LCDBKLT OL
                                          3 I2C_BKLT_SCL 9.97M
                                          4 I2C_BKLT_SDA 9.89M
                                          5 PP3V3_S0_EDP_R 79.10k
                                          6 SMBUS_SMC_0_S0_SCL 321k
                                          7 SMBUS_SMC_0_S0_SDA 323k
                                          8 EDP_BKLT_PWM ...
                                          11-04-2021, 11:46 PM
                                        • smic717394
                                          iphone XS turns off when press on screen.
                                          by smic717394
                                          Hi,

                                          I have a iphone XS that came in for a screen replacement, the screen was badly cracked, and inside missing scues, on the back of the screen still the blue protector, the screen was a LCD. So we replaced the screen and all good, installed the screen and we noticed that pressing the screen with a bit of force but not excessive, the phone dies. After plugging the charger it turns back on, but again if you press it it dies. I open the phone again, and I can't see anything major, with the phone open, if I press on the logic board, battery, charging board, or even putting pressure on...
                                          07-25-2024, 10:16 AM
                                        • Chrissygizmo
                                          Samsung UE55JU6800K half screen dark
                                          by Chrissygizmo
                                          Hello everyone, I’ve just been given a Samsung UE55JU6800K smart tv as it had white spots on the screen due to the led lenses falling off. After refitting them & putting the tv back together I thought it was a nice easy fix for a free bedroom tv , then I tried it before screwing the back into place. I realised that the right side of the screen was darker than the other side, I removed the screen again as I thought the backlights had failed but they are fine.
                                          I put the screen back in place & turned it back on . The screen seemed to be ok again but different screens on the same...
                                          02-10-2025, 12:33 AM
                                        • Loading...
                                        • No more items.
                                        Working...