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Re: Sony KDF-50WE655 will not power up

Thanks. I'll try checking fans but since it never actually fires up formore than a couple of seconds, will it have time to over heat?

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I replied you in your previous post.
Bad heat sensor can be cause of over heat problem.

Posted on Jan 27, 2009

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We Have a Sony KDF-50WE655, we've replaced the lamp and housing and we still have no picture or sound. Can you help?


Make sure that lamp cover is fixed back on its position securely after lamp replacement, turn On tv to check.
If still no picture or sound then check power/standby light is blinking?
If yes, count it how many times it blinks after 3 seconds long pause and let me know to diagnose possible cause of problem.
Thanks.

Aug 01, 2010 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

KDF 50WE655


3 times blink means Lamp Cover is not placed back that was removed while replacing lamp, make sure lamp cover is fixed securely in its position.
Thanks.

Sep 28, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

I have no picture on my sony KDF-50WE655


check the fan again with a flash light. I had this same problem and changed out the large fan behind the bulb...no more problem. my brother has the same tv and he has had to replace the fan at least three times.

Jun 08, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

Is the t603 and r672 part of the tv or the actual circuit breaker


Three blinks - B over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.

DOES THIS ABOVE issue have anything to do with Cooling FAN?
I cannot hear the cooling fan come on when first turned on like
before THANKS

May 05, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

2 Answers

Sony KDF-50WE655 will not power up. Red blight blinks 4 times


4 blinks shows problem either one or all 4 fans are not working AND internal temperature high error.

If you are familiar with TV repair and know basic electronics then unplug TV from AC outlet an take off back cover and check fans are running?

Jan 27, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

6 red blinks wont turn on sony rear lcd projection


thermal fuse. it sits below the lamp and has popped. replace with new fuse or just short (eliminating fire protection) let me know if you need instructions.

Dec 09, 2008 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

SONY KDF-50WE655 Cooling Fan


There are three fans: 1)Cooling fan(on the optical block)part# 1-787-057-11 2)Ballast fan part# 1-787-081-11 3)Upper optics fan part# 1-787-460-11 Also make sure you don't have a noisey iris motor in the optical block (verify by adjusting the iris settings in the menu and see if the noise level changes)

Sep 19, 2007 | Sony Grand WEGA KDF-50WE655 50" Rear...

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