Question about Polaroid FLM-3732 Television

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Lcd tv black screen control box no power fix - FLM-4034B

I have the 4034B too and don't know which caps to replace. Did you figure it out?

Or, how do you test the caps with a meter?

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  • reefman27 Oct 28, 2008

    I am sorry to hear that the tv still won't work. I appriciate your reply, it saved me some time b/c i was going to start replacing radom caps as well. I am going to take my tv to a repair shop this week and see what they have to say. It's too bad polaroid won't stand behind their product. I will keep you posted and please do the same if you find anything out.

  • SACH01 Dec 27, 2008

    I have a 4034B LCD Polaroid of which I have replaced two elecrolytic capacitors (both at 25V 470 microFarads) on the power supply board that did not fix my problem. Any other suggestions from anyone else, please post them.

  • Led12 Feb 02, 2009

    Have the same problem with my Polaroid 40 inch LCD

    all the capasitors seem ok, did you find out anything else? Please let me know.



    Thanks



    Larry

  • bece100 Apr 30, 2009

    I have the 40" Polaroid tv model (FLM-4034B) with the exact same problem everybody here described, I'm a bit hesitant to remove any of the caps on the board since they look ok in appearance. Someone posted a comment saying that they found out that there board has a short in it directly from the manufacturer caused by the 5-screw aluminum plate from the right side of the board (it rests on top of 3 aluminum posts). By removing it they got the tv working again. They removed it

    Has anyone tried this approach already? Did it work? Has anybody found the culprit component?

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When I looked on the board, they all looked fine so I changed 5 of them chosen arbitrarily (the one that best matched the description on the website) but no success, I will try this week end to change the others (I did not have enough caps). I found a way to test them with a meter but it is hard and unreliable to do it when they are still attached to the circuit:

The best would be to have a meter that can test specifically the caps, but if like me you don't have one, use the Ohm-meter mode to charge them then very quickly switch to volt-meter (be careful not to choose a tension too high that would fry your caps). You should see a tension really quickly dropping if the caps is still linked to the board. I found this technique on the internet, I don't know if it is really reliable.

I will try on this week-end to change the caps of the other kind on the board then I will tell you if I got lucky.

By the way, a few weeks ago when I called polaroid they told me they were about to change their policy about their TV so I think you should check that before you decide to destroy it with an axe or get a new TV.

Posted on Oct 24, 2008

  • pandours Oct 25, 2008

    I changed all the aligned capacitors (the 16V / 1000µF ) but it did not improve the condition of the TV. There are two 25V/750µF and one 35V/750µF but they seem very hard to reach as they are closely surrounded by circuitry ...

    Please let me know if you find any way to get a working TV from this without having to pay 600$.

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1 Answer

My polaroid flat screen started buzing, then lost sound altogether (except the buzzing) and then the picture went completely out, it will turn on at times. but only buzzing and a black screen. and...


There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.
Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it off and on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for some time and then try again.

If you aren't tech savvy, don't worry, read the rest of this solution and watch the videos.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating).

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for many Samsungs with the same issue) on youtube.

http://www.youtube.com/watch?v=Mm51C_RDIZE
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=related

As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.

Jun 18, 2011 | Polaroid FLM-4034B 40 in. LCD HDTV

1 Answer

Power supply went out (at least I think thats what it is) on my Polaroid FLM-4034B 4-" HD TV, if I buy the new power supply, is it easy to install myself? Will I have to do any soldering? I am not any...


Hi Scott,
Replacing the power supply board is not quite technical, no soldering required. But before an attempt to do so, let stand the unit for 1 hour to drain the main filter electrolytic capacitor. Power supply board is where the power cord directly connected. Pull-out all the cables connected from the existing power supply board and then put in the new board, re-insert the connectors and ensure that it is properly seat-in.
Click this link for the replacement or obtain it from your local Polaroid Service Centers.
Hope I helped you.
Thanks for using Fixya.
Jdvillanueva

Jun 05, 2011 | Polaroid FLM-4034B 40 in. LCD HDTV

1 Answer

Tengo un Polaroid FLM-4034B y tengo el power supply malo, me gustaria que me dijeras donde lo puedo conseguir y cuanto posria costar???


Revisa este enlace para encontrar la fuente de alimentacion para tu LCD.
Asegurate que la fuente es la misma que tu LCD esta usando antes de ordenarla.

Sep 28, 2010 | Polaroid FLM-4034B 40 in. LCD HDTV

1 Answer

My TV screen just went black, i have had some problems with it freezing in the pass but i thought it was temporary. so tonight i was watching football and it just went black! so i was wondering if i could...


This solution is for a Polaroid flm-373B 37 inch LCD TV. I noticed your TV is the flm-3734B. Hopefully this solution will work for you too.

I suspect you may have 2 capacitors in your control module that need to be replaced. When these caps start to go bad it will often show up as a problem with the sound. However, when they get really bad they can prevent the TV from turning on. Please see the link below, posted by stiv0. It gives detailed instructions on how to replace these caps and to tell if they're getting bad. If you follow these instructions you can take the back off the TV and check out the caps. If the tops of the caps are bulging they need to be replaced. Just be sure to replace them with the correct value (1000uf) and use caps that are rated at a higher voltage than the originals. I replace the 10v caps in my flm 373B with 25V caps just to be on the safe side. If you know how to solder this is an easy and inexpensive fix. If you don't know how to solder find a friend who does. These caps have positive and negative terminals. It's important you solder the new caps in with the correct polarity. Stiv0 gives instructions on this. Even if the caps aren't bulging this fix is so inexpensive, less than 10$, that you may want to try it anyway. I hope this helps you out.

http://www.fixya.com/support/r741402-polaroid_flm_373b_lcd_tv_black_screen

Sep 27, 2010 | Polaroid FLM-3734B 37 in. LCD HDTV

1 Answer

I have the same problem


I didn't but the control box,but found 2 caps inside it on the power board and replaced them both 10uf 450V.It fixed my problem

Jul 24, 2009 | Polaroid FLM-4201 42 in. LCD Television

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Replace 3-4 bulging capasitors on power supply board. 16volt. 1000mf.

Jun 08, 2009 | Polaroid FLM-4034B 40 in. LCD HDTV

1 Answer

TV won't turn on


I have fixed many polaroids, the problems is most of the parts are contained in one self contained control box. it sounds like your power board is not funtioning. contact polaroid and let them know about your problem and see if you can get a new control panel. the contol panel only has one connection and 3 screws to replace. hope this helps.

Apr 08, 2009 | Polaroid FLM-4034B 40 in. LCD HDTV

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