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CRT keeps turning on & off. - Hitachi 51F500 51" Rear Projection HDTV-Ready Television

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Re: CRT keeps turning on & off.

First thing i would try is replacing the convergance ic

Posted on Jan 10, 2008

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Projection TV Sony, first power on only hear the sound for couple second then turn off. Stand by light keep flashing 5 times. What's wrong and how to fix?

  • 5 times, Diagnosis: White balance failure (Not balanced) Possible causes: Video out (IC7101, 7201, 7301) is faulty (CR, CG, CB board), CRT drive (IC309) is faulty (A board), G2 is improperly adjusted. Symptoms of the problem: No raster is generated, CRT cathode current detection reference pulse output is small.

Jul 18, 2014 | Sony KP-51HW40 51" Rear Projection...

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After 5 minutes the picture goes red

That model is famous for having CRT issues. Chances are the Red CRT or one of the CRT drive board is whats causing the issue. Usually if the set shuts down shortly after turning all red then its the CRT. But if it just turns red and keeps working it could be one of the CRT boards dropping out causing the Red to become dominate.

Jun 19, 2012 | Sony KP-57WV700 57" Rear Projection HDTV

1 Answer

What types of fluid used projection tv lense

Thats an optical grade coolant specificially made for CRT projection Tubes to keep them cool. You can get replacement CRT coolant from each CRT will require one bottle of CRT Coolant.

Aug 21, 2011 | LG Projection Televisions

1 Answer

Lost the green tube where do I find one? The color is either red or blue on my set.

Need the model number of the tv. Are you sure it is the tube itself? The fluid in the CRT may have turned cloudy and need replacing. Check to see if the bulb is glowing in the CRT neck. Can you see any light coming out of the bulb?

If you need to replace the CRT, it is always recommended to replace all three in order to keep the colors balanced. Look on Ebay for a used CRT. You need to get the part numbers off of the CRT assembly, usually located up near the face of the CRT itself.

Jan 30, 2011 | Toshiba Projection Televisions

1 Answer

The red crt on my 55PW9363/17F keeps flashing and clicking i turn it down till its off and it stops. any suggestions?

sounds like the RED CRT Drive board has an issue. Most likely solder issues on the CRT socket on that board. If the board appears fine the CRT itself would be suspect then.

Jul 22, 2010 | Philips 55PW9363 55" Rear Projection...

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KP53S35 when tv turned on picture was

You TV has a bad CRT, a red CRT by the sounds of it. This TV is rather old, perhaps 11-13 years of age? Your TV has given you many years of service and I do applaud you for the care you have given it and the TV for it’s reliable in your home. The trouble you face with a rear projection CRT set of this age is that you can’t just change 1 CRT tube and expect it to be reliable and produce a good picture. All 3 tubes should be replaced, as they have all aged the same. The lives of these tubes are only about 7 years. A tube is not any easy or inexpensive repair on any RPJ TV. When you are faced with the cost of 3 tubes, which may not even be available in the market place… You should consider retiring this old friend and keep the manufacture in mind as you make a new purchase.

Mar 14, 2010 | Projection Televisions

1 Answer

Tv Red Screen

There is only a few reasons for this problem and it is a bad video IC on RED CRT board or Defective RED TUBE disconnect CRT board at end of neck on red tube Look at IC on That board while disconnected from tube turn TV on if it keeps playing without shutting off Tube is defective.

Feb 20, 2009 | Sony KP-51WS500 51" Rear Projection...

2 Answers

Power up on tv

Usually, that symptom indicates CRT coolant leakage on the
circuit board below the drip.....creates a short circuit,which
turns off set.....Have it examined by a Mits tech to be sure......T.

Dec 04, 2007 | Mitsubishi VS-50605 50" Rear Projection...

1 Answer

TV wont turn on

Most odd troubles on your make/model involve CRT coolant

leak on one or more PCB's.Check circuit boards for wet areas.

Oct 13, 2007 | Samsung PCJ534RF 53" Rear Projection...

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