Question about Sony KP-57HW40 57" Rear Projection Television

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Overheating problem?????? The TV currently has an issue that causes the screen to flicker green and shut off, typically after an hour or so after being turned on. It seems as if it may be an overheating issue since it occurs repeatedly once the TV has been on for awhile

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Re: Overheating problem??????

· Which models are affected with the "flicker" problem?
A1: There are 12 models in total: KDP57XBR2, KDP65XBR2, KP46WT500, KP51HW40, KP51WS500, KP57HW40, KP57WS500, KP57WV600, KP57WV700, KP65WS500, KP65WV600 and KP65WV700.

Posted on Jan 14, 2008

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Television keeps shuttting off and on green light appears

I have a Sony Grand Wega 55 HDTV, Its 6 years old. Problem is as follows: I press the power button and the TV warms up and goes on for about 30 seconds than shuts off to a no power screen , with the power light flashing green. Than after about 60 seconds the TV comes back on for about another 30 sec and shuts off again. The longer i leave the TV on the longer it stays off when it starts blinking the green light. Can anyone tell me if its the sensor or something else? Is the part I need attainable with the ability to replace it myself.
Look forward to your replies.

May 20, 2011 | Sony Grand WEGA KDF-55XS955 55" Rear...

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Green power light

This might be due to a problem related to the SMPS (Switched Mode Power Supply) overcurrent / overvoltage dectection circuitry. When an overcurrent or overvoltage condition is noted the SMPS's shutdown circuit will turn the tv off. An over current condition can and most usually is caused by a component overdriving which causes an increase in current requirements for the power supply which in turn causes the shut down of the TV set. In an overvoltage condition a component may not function as well as it should causing a high resistance and this hig resistance causes the voltages level to go up causing the over voltage detector to activate shutting down the TV set.

The best this to do would be to take the set to a shop if you do not have a background in electronics.

I hope this helps,
Thank you,

Nov 15, 2007 | Mitsubishi WD-62525 62" Rear Projection...

1 Answer

Samsung HLR5067W: Screen goes black - Audio Remains. Several months back my 5 years old HLR5067W started displaying the following behavior: - Launches OK - After running for a while (anywhere between...

When was last time you replaced Lamp? Ballast Board is what powers the lamp on.
Lamp Fan, if it is defective it will shut lamp off to protect it, if it is Not cooling the Lamp.
Mats has Lamps for $99.00 1-800-628-1118

Encompass Parts Distribution has 10 Ballast Boards in Stock for $68.96 they also list Service Manual Free for this Model# 1-800-638-3328

Nov 03, 2010 | Samsung HLR5067WX 50" Rear Projection HDTV

1 Answer

Screen Flicker then tv shuts off

please re solder  first all parts specially in hot area, and observe if problem still occur, then next is replace filter capacitor. observe also too hot parts and check for change value resistor.

Feb 25, 2010 | GE D52GW12 52" Rear Projection HDTV-Ready...

1 Answer

I own a KP-57HW40 set that has a color and shut off issue. Started as a green tinge problem to the screen after watching for a few hours. Started becoming more and more frequent a couple months ago....


Feb 09, 2010 | Sony KP-57HW40 57" Rear Projection...

1 Answer

1. After being on for 1-2 hours the pic goes out and turns to "the green screen of death". Pic will not come back on unless TV cools for 30+ min. 2. When I switch from DVD source to cable TV source the pic...

You got an issue with overheating.  TV is designed to shut off to protect electronic components if TV overheats.  Take it to the shop and have them open this thing up to identify the faulty circuit.  Also, check to make sure your not blocking the heat vents.

Nov 11, 2009 | Hitachi 70VS810 70" Rear Projection HDTV

1 Answer

TV blinks green then shuts down

absolutely, and if he spilled any of the fluid on the parts below the tube your looking at bigger headaches down the road, the coolant fluid is very caustic, stop running your tv and get a tech to check out your set right away, video-tek

Jun 07, 2009 | Akai PTH5498 54" Rear Projection...

1 Answer

Mitsubishi DLP TV gives a ''lamp overheating'' message & shuts off in seconds. Restarting the TV causes it to do the same but power-off the TV and restart and it runs fine for many hours or typically the...

call mitsubishi and tell them you are getting that mesage and that it has a bad lamp thermal sensor, its should be covered under warranty if u have proof of purchase.

May 05, 2009 | Mitsubishi WD-65731 65" HDTV

1 Answer

Sony KP75HW40 unstable red. (not the usual problem)

I would suggest either the Focus block or the RED CRT drive board either one of those items could cause the symptom. A defective CRT could also, but a shorted CRT doesnt usually go back to being normal

Mar 16, 2009 | Sony KP-57HW40 57" Rear Projection...

5 Answers

KP51ws500 turns green and shuts itslelf off

There may be several causes but, one is that when any color gun is being over driven, the Sony shuts down the gun to protect it. Try this. Remove the front of the set by removing the two screws from each lower corner. Next remove the black panel held on by 5 or 6 screws. Now you should see a panel with 6 potentiometers on it. Turning the ones on the bottom row CCW reduces the drive. Turn the color down and if all the guns stay lit, SLOWLY turn them up until you get the color balance that you like.

May 02, 2008 | Sony KP-51WS500 51" Rear Projection...

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