Question about Sony Grand WEGA KF50XBR800 50" Rear Projection HDTV-Ready Television

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Sony lcd projection tv kf50xbr800 shuts down and

Sony lcd projection tv kf50xbr800 shuts down and lcd light flashes on standby about 35 times and turns back on what could be the problem?

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Hey there, from what you are telling me I think the problem is coming from your Power Supply board it sounds like it could be two things

one: the board might have gone bad and its not sending the corresponding voltage to your components and that is why it keeps turning off

example: works ok for a while then gets weak truns off and then gathers enough turn back on

two: the power supply could be over heating and it has a sencor when it gets to hot to turn off this is very rear though

please rate this solution !!!

Posted on Jul 19, 2010

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Posted on Jan 02, 2017

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KF50XBR800 Rear projection LCD TV on and then standby


from how long you have this problem? and what made it start?
do u remember the cause?

Dec 28, 2007 | Sony Grand WEGA KF50XBR800 50" Rear...

1 Answer

Kf-50xbr800 turns off for about 30 seconds, standby lights blinks 34 times before coming back on. stays on for 2 minutes then repeats cycle...


The tv LED light "LAMP" indication it is flashing too or lite up?The tv projection lamp has it been in the tv like 1 1/2 or 2 years already and tv in uses it like 4 or 5 hrs everydays?Yes?The tv projection lamp life has ended.Tv require a new projetion lamp.Dose this whole blinking lights 34 times cycles have like clicking noises to it too.Yes,than the board that call the Ballast board it is also dead.Tv must it Ballast board replace too.This Ballast board only job are to ignite the tv projecion lamp only.

Aug 22, 2011 | Sony Grand WEGA KF50XBR800 50" Rear...

1 Answer

Picture goes off and standby light flashes then picture comes back on after a short time


Ur tv projection lamp on this tv been in it like a 1 1/2 or 2 years and daily used like 4 or 5 hours a day?Yes.Than the tv projection lamp life are ending.Require a new tv projection lamp.

Nov 17, 2010 | Sony Grand WEGA KF50XBR800 50" Rear...

1 Answer

MY sony kf50xbr800 tv will shut itself off for about 20 seconds and then come back on.While it is off the standby light will blink.What do you think?


If your tv set shuts off by itself at any time, sometimes earlier or sometimes longer, there mus be lost contact on the pins of the parts of your unit. Usually it occurs when the audio is loud. The vibrations will cause some of the pins to lost contact from the circuit causing the automatic voltage regulator to shut off, detecting the abnormal flow of currents and voltages in the circuit. Ask for a qualified serviceman to have it check and solder the pin or pins having a lost contact.

Oct 03, 2010 | Sony Grand WEGA KF50XBR800 50" Rear...

1 Answer

I have a sony xbr lcd projection tv . it goes on and off all the time . like every two min . and the standby light comes on. model KF-50XBR800


Hi,
Its symptom of weak lamp that reaches to end of its working hours life span. If lamp has not been replaced in last 2-3 years then replace it to fix tv problem.
Lamp replacement procedure is easy and written in user manual.
Please buy Sony original lamp for good picture in tv.
Thanks.


Jul 16, 2010 | Sony Grand WEGA KF50XBR800 50" Rear...

1 Answer

Installed new lamp ..tv turns on then shuts off standby light flashes for a few seconds then tv turns on then shuts off again


did you replace the all three lamp the red,green and blue lamp?if not what color of lamp did you replace?try to dis connect the lamp that you installed then power the tv again if it work there might be a problem on your compatibility of lamp u use..or you can replace the convergeance ic there are two big ic in there sometimes labelled STK replace them...hope this could help..good luck!!

May 21, 2010 | Sony Grand WEGA KF50XBR800 50" Rear...

1 Answer

What does it mean when my tv flashes standby? after like 30 sec


Since this is an Rear Screen LCD projection TV set it could be 1) Bad lamp, 2) Power supply issue.
I would check the lamp.
Blessings,
A/V Media Tech Guy

Dec 20, 2009 | Sony Grand WEGA KF50XBR800 50" Rear...

1 Answer

Grand Wega picture going on and off; standby light flashing, sound remains on


Is the cooling fan running properly?  I'm just guessing, but it sounds like it could be overheating and shutting off, which allows it to cool off enough to turn on and overheat all over again.

Dec 09, 2007 | Sony Grand WEGA KF50XBR800 50" Rear...

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