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

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Sony tv will not stay on

I have a Sony 50' LCD rear projection tv that will not stay on. Model KF-50XBR800. I called Sony technical support and they were no help.

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  • david malkinski Feb 08, 2007

    replaced lamp on this set and plays like new



1 Answer

Unplug the unit for a couple of minute and plug it back in...if it still wont stay on get a repairman

Posted on Sep 03, 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...

1 Answer

Where is the lamp located oa sony lcd projection tv model kf-50xbr800

the lamps at right side a front of TV.(look like 2 speaker).It,s snap on.

Nov 06, 2010 | Sony Grand WEGA KF50XBR800 50" Rear...

1 Answer

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

When I turn my Sony Grand Wega Kf-50XBR800 on,

This is symptom of weak lamp in TV, please replace lamp in TV and I would suggest to buy Sony original lamp for TV safety.
Lamp replacement procedure is written in user manual in details, click Sony Support if you want to download user manual copy.

Oct 18, 2009 | Sony Grand WEGA KF60XBR800 60" Rear...

1 Answer

Sony kf-50XBR800 tv turns itself on and off

I just purchased a replacement lamp off ebay and the TV is working fine now. Color looks better too (which I guess I should have expected). Search for "REPLACEMENT LAMP SONY XL-2100U" on eBay and look for seller "niosales". I paid $129 out the door. Their are other auctions for this lamp you can check out. Make sure you look at lamps that include the entire lamp housing, not just the bulb.

Jan 24, 2008 | Sony Grand WEGA KF50XBR800 50" Rear...

2 Answers

Sony grand wega started turning on and off continuously

codes consist of N blinks, a pause and N blinks again,valid error codes are 3, 4, 5, 6 & 9 blinks.

Jan 23, 2008 | Sony Grand WEGA KF50XBR800 50" Rear...

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