Question about Polaroid FLM-3734B 37 in. LCD HDTV

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Same won't turn on

CHANGE THE CAPACITORS!! it works! I just did it over the weekend and it runs fine.

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Found 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. Took 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.

Posted on Sep 09, 2008

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Panasonic (TH-50PZ700U) Television won't power up at all as if it was disconnected


Take the back off and check the fuse. If the fuse is good check all capacitors to see if any are puffed up on top, they all should be flat. Replace them if needed with the same # value. My TV had the same issue and it was a $5 capacitor that fixed it.

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I have a Samsung LN52A750 It has worked for about 3 years until the other week I turned it on to a blue screen (wrong input setting) and left it alone for about 10 mins on that screen after which it turned...


A blue screen will in many sets trigger it to shut off---try unplugging set and or box or receiver if used for a while and plug them back---allow the units to try to reboot.

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1 Answer

Power board for 37pf5521d


hello!
You don't need to replace power supply in most cases. If you can to the board itself, it buried deep under metal shield, up side down, remove it from the set by unscrewing 6 machine screws, unplugging few plastic connectors. Be careful, connectors are fragile, gently move those in every direction, while pulling out male part of connectors. You will find at least 1 "bloated" electrolytic capacitor, remove and replace those. It's good have "in circuit" capacitor checker to determine quality of "hot side" of power supply capacitors. If you won't find and replace those, small: 1mf 10mf or 22mf, your set will start up, might even work fine for a while, then will quit for good! I've seen that happen! If you don't have capacitor gizmo, then replace all small electrolytic capacitors on "hot" side of power supply. "hot" is that side, what connects to main power in plug area, contents one large capacitor, I.C. chip diver, power mosfet, etc. worst case scenario: if you can't replace those parts yourself, remove the board and take to local TV repair shop. It won't cost you that much to do so, compare to complete TV repair.
Good luck,
Alex.

Feb 19, 2012 | Philips 37PF5521D 37 in. HD-Ready LCD...

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My philips lcd tv does not turn on, it just blinks for 5 times and then nothing... what could be the problem?


good day if the tv won't power up then just only a blinking light from the indicator, you will need to check the power supply first. you can apply the visual checking usually bulging capacitors at the secondary filter capacitor of the power supply they are leak which need replacement. sample of bulged capacitor en.wikipedia.org/wiki/Capacitor_plague . you can find replacement at www.digikey.com. now after you replaced defective capacitors turn on the tv unit then check all the out put voltage if normal the 5v stand by. 5v switched, 12v, and 24v for inverter ballast now if those voltage are stable i'm pretty sure your tv unit will working fine.

Aug 19, 2011 | Flat Panel Televisions

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My 42LD450 won't stay on! It turns on for a few seconds and works fine, then the screen flashes then comes back on, then flashes again after a couple seconds, then turns off. Rinse and repeat. Tried...


I hope that you can use the warrantee.

Otherwize, it must be possible to repair it with a fried comfortable with electronic because the problem is not permanent. This kind of problem is usually an old capacitor or a bad connection (soldering).
It would be important to check if changing the ambiant temperature fixes the problem. (I.E. move it to the seller for 2h and try..)

Regards,

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1 Answer

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Hi, Check that the plug has power. Use a light to do this. Also check the TV cord maybe bad.
Check breaker pannel. Make absolute sure that you have power getting to the TV. If all is good you need a repairman. Good luck

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1 Answer

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im not soo sure sorry however i got a question also i have cable however last weekend when i turn my tv on the screen was black however when i turn the cable box on it was working fine i just didnt get any picture why is that

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1 Answer

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3 Answers

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Hi,
The black vertical line is caused by a leaking capacitor, Check and replace poped capacitor with a new won and it will work fine again. No worries.
Thanks for using fixya.

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