Question about Polaroid FLM-2601 Television

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Very poor sound quality

After replacing 2 capacitors on the power supply board ( excellent instructions from flayman the dead lcd tv came back to life however the sound quality is poor.

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After installing parts on a board some tv's require that you reset some values on the tv's servicing software. This software is only available to certified techs but you can search the net to try and find it. the caps that were replaced should be of exact value in 3 criteria:

1 Voltage
2 micro farads
3 temperature

Also a note of safety:

There are HIGH VOLTAGE circuits inside your tv that could inflict serious harm even when its unplugged if approached wrong. There should be warning stickers all over the chassis of the tv informing you of the danger that your exposed too. When you take out the primary power supply discharge all high voltage capacitors to cancel the harmful charge they are holding. Especially if you just turned the tv off.

Discharging HIGH VOLTAGE capacitors:
use a high wattage resistor of about 5 to 50 ohms/V of the working voltage of the capacitor. If you don't discharge the capacitors or replace caps with inaccurate values you could easily damage other sensitive circuits.

Try resetting the tv back to manufacturers specs and see if this produces better audio quality. And when ever your working on any circuit board be sure that you are well grounded. This will prevent ESD (electro static discharge) which can harm other circuits especially logic circuits. This will cause an imbalance in circuit operation and result in a non working tv eventually.







Posted on Jan 07, 2009

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Dead tv


Good day!!!


That problem is usually cause of faulty capacitors on the power supply board..

Just follow this instruction to fix your TV..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter

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Now tv turn on,pictures it flashes only a couple sec. than died have sound left only?Yes,than the tv power supply board,that the board where the tv power a/c cord plug into it.Board it might have dying and dead components parts that are called capacitors.Take the tv aparts.Inspect and check the tv power supply board carefully for dying and soon to be dead capacitors parts,these capacitors parts are alway bulges up or puffing up onto it tops.U have all the tools and know basic electronic also can do basic soldering work too?Yes,replaced all these dying capacitors parts are bulges or puffing up on to it tops capacitors parts with the same Micro Ferit and those capacitors voltages like 5 or 10 voltages higher the old capacitors components parts u replacing,now will solved this problems,also capacitors will last longer and have more heat resistance than before.If the tv power supply board check out and have none dying capacitors components parts that are dying and soon to be dead are bulging or puffing up on to it tops.Than the tv have those 2 long boards each of it sides that are called LCD inverter boards are dead,these 2 long LCD inverter boards only job are to provided the tv LCD screen panel a backlight to produced pictures.If u can't repair the power supply board by ur self,if the tv power supply require it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refrubish power supply board or those 2 long LCD inverter boards for the replacement.

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Plasma and LCD TV sets are prone to having capacitors in the power supply section fail. This is the most likely cause for the probem you describe. When capacitors fail your will commonly see one or more of the following symptoms.
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  • TV is making a clicking noise.
  • TV takes a while to come on
  • Screen is very dim or flickers.

Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

Here are pictures of capacitors...Notice that the ones below look bloated. They have failed and will need to be repalced.



ecollier2012.jpg
Capacitor being replaced! Fairly easy DIY fix.

ecollier2012_0.jpg
Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit

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1 Answer

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