Question about Polaroid FLM-2632 Television

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Why my screen on my tv won't stay on and goes black

I have a Poloriad flat screen that I replaced the compactors on the power supply but the tv will come on for about 3 seconds and then the screen will go black and but the power button still stays on?

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If you get steady 24vdc from the power supply which is used for the inverter board afterb the bad capacitors are replaced, then you may problem with the inverter board that is damaged by AC from the power supply when the capacitors went bad, capacitors were filtering out the AC. There are surface mounted fuses on the inveter board also. Please post back what you find.

Posted on Nov 15, 2009

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Comes on fine, good picture and sound. After about 15min. sound stays on but picture goes black


Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

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Hello,

Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

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It sounds like you have a power supply problem, this powers the inverter! Where you just replaced the inverter, we could assume it is good! Look for some bad caps (capacitors) on the power supply board. They will look bulged on the top an may be a little leaky (brownish stain). The power supply can fail on some output and be good on others. Was the back light inverter new? If all else fails, see if you can return the back light inverter and get another! I hope this is helpful!!

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