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Polaroid 37" My Polaroid MFC-3732 won't turn on. Get blue light but not sound or picture. I can unplug TV and wait a couple of minutes then it powers up but has buzzing noise for a couple of seconds then it works fine until I turn it off then have to go through the same unplugging drill. I need instructions for replacing the capacitors in my Polaroid mfc-3732. Where are they, etc. Thanks

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  • wesmichaels7 Mar 02, 2009

    Do you have more detailed instructions? I am not a TV repair person but do know how to solder and am sure I can do it myself if I know which components I am repacing.
    Thanks

  • wesmichaels7 Mar 02, 2009

    Why have others posted the same problem and have stated that they repaced the caps and their TVs are working better than ever?

  • wesmichaels7 Mar 02, 2009

    The red light comes on when the TV is turned off. When I try to turn TV on the blue light comes on but no picture or sound until I unplug the TV for a couple of minutes then it will power up and work fine except for a buzzing sound that goes away after a couple of seconds. The TV continues to work fine as long as I don't turn it off.

  • wesmichaels7 Mar 02, 2009

    Thanks for your help. But not what I was looking for. I just wanted to know the istructions for repacing the capacitors other had reported fixed their sets. This set will work fine for 12 plus hours with no problem once powered up. I wanted to upgrade the caps to 25V for more reliability.

  • wesmichaels7 Mar 02, 2009

    Trying to keep the cost down. I have been unemployeed for quite a while and was looking for a less expensive way to fix it.

  • wesmichaels7 Mar 02, 2009

    Can you just tell me what caps they replaced?

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Go to HERE for the solution to your problem.

I hope this helps.

If you have any questions, feel free to ask them.

Thank you for using Fix Ya!

Don't forget to rate the overall satisfaction of this solution.

Posted on Mar 02, 2009

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First of all unless you are an expert at electronics you shouldn't attempt to replace the capacitors on your tv. will cause fire or electrocution. the only way to replace the capacitors is to pull out the circuit board inside the tv and check them one by one. if the capacitor is bad the top of it will have a dome shape. unlike the rest of them. the only way to replace them is to heat the solder and pull them off the board. then you need to make sure that you replace them with the exact same capacitor(the same voltage). you need to be pretty good at soldering to install the new one on the board. if you don't feel comfortable with doing any of this then take the circuit board and find an electronics repair shop. they will remove the capacitor from the board and install the new one. I would also suggest calling polaroid, or tv repair shop and finding out how much it would cost to order a new circuit board. make sure you know which board has the bad capacitors.
best of luck.

hope this helped.
be careful.
please rate good.

Posted on Mar 02, 2009

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Hi, this is what your tv is heading towards, the complete instructions of replacing the caps can be found on the link

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


Benjamin

Posted on Mar 02, 2009

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You may need a new power supply, I would check the power supply fuse where the ac plugs into the tv, you have to pry it out from behind the tv, stiv0s' fix would return 24v to the lcd backlight hence you would have sound but no picture. if the red light doesnt come on at all that would mean the 5v required for standby isnt getting to the mainboard. there is actually a fuse soldered onto the power supply right where the AC cord plugs in. if you had a meter you could check that to see if the fuse is is burnt out.

Posted on Mar 02, 2009

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Hi installI this Radio Shack #272-1032 1000mf 35v in place of the original 10v.... it will work for u!!

thank u

Posted on Mar 02, 2009

  • Prakash Ram
    Prakash Ram Mar 02, 2009

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

    hi visit the above link for detailed explanation on ur problem.. u will get a clear idea about it..


  • Prakash Ram
    Prakash Ram Mar 02, 2009

    hi try to Find out whether the two 1000uf 10V capacitors that were bulged out on the power
    supply board located inside the main control box, replaced them with
    1000uf ,16v capacitors from Allied Electronics at $3.00. Take the parts
    to an electronics repair shop and had them replaced, these type of
    capacitors have a +/- pins so ensure if your soldering these yorself
    get the polarity correct, and don't replace them with 10v again thats
    probably why some are only lasting another week or two...

    thank u!!


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That does not seem capacitor problem in TV. You need to replace power supply board.
Please check Shop Jimmy for part availability.

Posted on Mar 02, 2009

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  • Shahid Electronics
    Shahid Electronics Mar 02, 2009

    It is not necessary that every Polaroid TV has same problem and suppose if it is caps problem then you are not TV tech so resolve the issue so it is easy and safe way to replace power supply board.

  • Shahid Electronics
    Shahid Electronics Mar 02, 2009

    Alright, If you can unsolder old / bad caps and solder new caps easily then replace 2-3 caps 1000MF 25Volt in power supply board.

  • Shahid Electronics
    Shahid Electronics Mar 02, 2009

    Please check below image that shows where 2 caps are located.
    You can check further caps that might leaky.



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The caps are located on internal pcb, disassembly is quite delicate on a camera.

Posted on Mar 02, 2009

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Capacitors (C112 and C113) on the main board of the tv they will be loose or near to faulty. get it checked and replaced.

Posted on Mar 02, 2009

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Hi,
http://www.polaroid.com/service/userguides/ce/lcd_tvs/flm_series_ug.pdf
Hope This Helps!!!  Please Don't Forget to Rate my Response!!! Thanks!!!
PREM

Posted on Mar 02, 2009

  • Prem  Kumar
    Prem Kumar Mar 02, 2009

    Jus give me minute. Let me Check the manual.

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Its the problem of loose soldering joints in the tv as when you on the tv it works properly but after some time due to that loose soldering joints the loose components gets over heated and it power down and you loose picture and sound both.after you turn it off and on after some time it cools down and again works for some time.this goes on but this will not happen after certain period of time as the board will get overheated and majior short circvuit will occur and nothing will come up.just get whole control pcb board soldered and let it get dry for 3-4 hours and then check out connecting again as every thing will be fine.if you get it done at repair center center cost will be negligible at present.

Posted on Mar 02, 2009

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They are located on the main board you will have to open the unit to replace the capacitors.

Posted on Mar 02, 2009

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1 Answer

Have to unplug it after I turn it off to get it to come back on.


Power supply board is dead.Have dead capacitors that bulges up on it top,or puff up on it top.U know basic electronic's and soldering.Replaced these bulges and puff up on it top.Or tries wesite like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.After the power supply board is fix or replaced,the power LED indicator light on the LCD panel will not flikers anymore and u will have a solid green light all the times and get the power back to normal.

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it could be 2 caps on the power board, i had the same problem and for $3.39 at Radio Shack solved it.
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Comment by boommer, posted on May 24, 2008 im having same problem no picture on tv blue light just flickers was unplugging it and tv would now thats not working antmore

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