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1 year ol 52 inch flat screen with new power supply cycling.

1 year old 52 inch flat screen recently had the power supply replaced turns on for a minute with no picture then shuts off. Continues to cycle like this once plugged in.

Posted by the_young_fa on

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Anonymous

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Still sounds like a power supply issue would it still be under repairers warranty

Posted on Jan 07, 2010

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How does input switch on a Sharp TV that is 8 years old?

Well, its hard to say but consider that the TV is 8 years old...

For example, lets just say that the power supply was No Good and the replacement cost was $195.00 and another $50.00 or so to install.

For another $100.00 or so bucks, you can find another LG 52" New under warranty.

Chances are the unit has seen its day.

The main and other boards will need service or replacement and you really do not want to mix, New and Old boards.
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The capacitors at the main power supply regulator board should be checked and replaced. If you are not familiar with electronics, do not attempt to repair! Whether you suffer fatal electrical shock! Instead, contact the nearest service center!
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If you got four years I would retire it and recycle it and then replace it.
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I have a RCA 55 inch projection hdtv and it wont come on!!! when i push the on button the lite comes on but no picture and no sound and then it goes back off... its then tries to power back on by itself...

Suspect your POWER SUPPLY. Either your supply is faulty OR something else in your TV is demanding too much CURRENT (from the supply) and your supply may be 'protecting itself' with 'emergency shutdowns'.

These links and PHOTO WILL help you ~ if you are serious about repairs!

I know it's not quite the same model number as yours, but the steps and efforts remain similar.

RCA TV repair 52 HDTV

Recent Questions Troubleshooting Support for RCA D52W19 52 Rear Projection...

Finally, this REAL 'old puppy' that DEMANDS LOTS of AC POWER to fire-up your 3 'super-bright' projector lamps inside! Are you sure you won't consider pushing this TV to the curb instead of investing HOURS of your life to fix this one?

I'm confident you have spent LOTS MORE on your POWER BILL (over the years) than the cost of a NEW Flat Screen model! GO ahead ~ you deserve a quality TV... but stick to known brands like LG - VIZIO and Panasonic to avoid the "no parts/boards available" problem (way down the road).

*(Your TV is so old that the Internet has NO CLUE when they first made this model)*? Also I see a whole ARRAY of problems with this series and it's no surprise that yours has similar problems!

Anthony

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I have a 52" 1080p 120 Hz LCD HD Samsung TV that

You have a problem on your Power supply board, possibly a bad capacitor or loose connection. You can look hard at your power board and check for these things or replace it from places like shopjimmy.com or discount-merchant.com etc
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My 46 inch Samsung LCD flat screen tv won't come on. it tries to come on but then flashes off. It continually goes through this cycle and it won't stop cycling like that even if I try to turn it off with...

Most likely 3-4 caps on power supply bd 2200uf 10v or 1000uf 10v look for tops of caps bulging alittle( if bulging any and not flat bad caps) replace with same value but a higher voltage 15v-20v will do. Common problem.
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Versed, you have to open the back panel (cover) to access the lamp. replacing is easy as soon as you can see it. loosen the mounting bolt and pull to unplug the lamp from the SMPS Lamp power supply. Thats it.
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