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

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KF50XBR800 Rear projection LCD TV on and then standby

Turns on, picture is fine. After 2 minutes shuts off and goes to standby. After another 1-2 minutes goes back on. Cycle repeats indefinately until I try to turn off TV then I get a series of 5 blinks on standby light which repeats and finally turns off

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Re: 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?

Posted on Dec 28, 2007

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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...

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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...

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I have a sony LCD projection TV Model # KF-50XBR800 and when I go and turn it on my standby button flashes red and then picture comes on for about 10 seconds then it shuts itself off. Can you tell me what...

I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Aug 28, 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

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.

Jul 16, 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.
A/V Media Tech Guy

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

1 Answer

Samsung HLP4674W - changed bulb - still no picture - lights flash

If the lamp has been replaced I would think the Lamp ballast would be most likliest followed by the color wheel and then the Digital board. You can get any part needed for your model at just leave them a email they respond quickly.

Aug 28, 2009 | Samsung HLP4674W 46" Rear Projection HDTV

1 Answer

Sony lcd projection tv kf50xbr800 shuts down and

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 !!!

Jun 19, 2009 | Sony Grand WEGA KF50XBR800 50" Rear...

1 Answer

Tv turns off after being on for 1 minute.

I assume its Sony DLP TV and symptom shows it is new lamp time.
Let me know exact model number to help you more info.

May 11, 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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