Question about Maxent MX-42HPM20 42 in. Plasma HDTV

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On and off problems

The tv keeps turning itself on and off at random times. Sometimes doing it for long or short periods. Makes it impossible to watch anything.

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  • 125 Answers

Power Supply issue...i dont have a part number for this unit...but I'd replace the power supply first..........

Posted on Jan 31, 2008


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Posted on Jan 02, 2017


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Samsung TV model LN32A450C1DXZA, after turning the TV on it will turn itself off shortly after and then turn itself back on shortly thereafter. Then it repeats that several times before staying on.

Hi there,

If the tv is still under warranty, this can be repaired at no charge.

However, if not under warranty, you will need to have the CAPACITORS on the main power supply circuit board tested (or replaced).

The capacitors responsible for the power supply can sometimes fail - open the back panel. If the capacitors on the main power supply board look too fat, or signs of burning near the solder joints, then you've found the problem.

Hope this helps.



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probably overheating. hoover out the vents and make sure plenty of air can circulate. a case of suck it and see. lol

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1 Answer

My TV keeps turning itself on/off at random times, sometimes it works, then turns itself off, and flashes on and off! Its becoming really frustrating as it seems to only work when it wants to for a short...

This could be caused by poor ventilation on the unit. The back of TV sets where the air vents are usually located are meant to be easily accessible to air. When they do not have enough air then the Tv tends to shut itself down due to overheating when it geths too hot.
Try relocating the TV position to an airy environment.
Hope this solution has been helpful?

Sep 26, 2010 | Televison & Video

2 Answers

The tv just randomly turns off by itself

Check to see how many times it blinks when turning off and then look for the codes for Sony tv blinks. this will tell you what's wrong. This set is notorious for Shorted tubes.

Feb 27, 2009 | Sony KP-57WS500 57" Rear Projection...

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Random Menus Pop Up

Probably not the cat - don't skin it yet!

Try pulling the AC plug and leaving the set stew in its own juices for 24 hours.

You may have had a line surge (from distant lightning or 'just because' by the power company) during your absence that temporarily addled its brain.

As an additional precaution, change the batteries in your remote and use alkaline types if you don't already.

Jul 10, 2008 | RCA F36650 36" TV

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Turns off by itself!!!

The flyback transformer are damaged .

May 26, 2008 | RCA TruFlat 27F520T 27" TV

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Turns off by itself!!!

The flyback transformer are damaged.

May 18, 2008 | RCA TruFlat 27F520T 27" TV

1 Answer


how long does it stay powered on and do any of the lights flash if so how many times?

Dec 16, 2007 | Samsung HCN4226W 42" Rear Projection...

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