Question about RCA D52W20 52" Rear Projection HDTV-Ready Television

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New Blue CRT installed now TV won't stay on

Hi,
I had Circuit City come out after I had a blue haze appear and they replaced the Blue CRT and the picture was beautiful. An hour after the tech left, I started to hear a faint "static crackle" coming from where the new CRT was and then the Tv turned off. I turned it back on and the power light just flashed and there was no sound or picture. A few hours later I turned it back on and it was fine for 5 minutes then it did the same thing. I called the tech back and he said it happened because of the new part and should clear up in a couple days. I think he is wrong. the TV won't stay on for more than 5 mins! please advise.

seanx666@yahoo.com

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  • RCA Master
  • 8,617 Answers

Sounds like the HV lead isnt sealed properly either at the CRT or the Splitter I would have him come back and recheck his connections

Posted on Jun 16, 2008

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The projector is stuck on the blue screen. It will let me change the input but it will still stay on the blue screen even though everything else is on and working.


Hello!
"blue screen" means: picture is all blue, but there is a signal coming through? Do you see channel logo? Menu? If so, blue CRT or CRT board is at fault. Depends on the age of the set. If set is fairly new, then try to bang on the neck of blue tube with rubber screwdriver hands. Very gentle! While set is working. If you see the retrace lines and TV shuts down then, CRT is at fault. If not, try to play with blue "screen" control of "focus block". Black plastic module with bunch of thick wires attachad to that. Has 3 "focus" and 3 "screen" controls. For each of the tubes. In many cases you'll be able to adjust "blue" down to normal. Usually, those controls are smeared with white paint and hard to turn by hand. Loosen those with little pliers, then adjust manually or via small "phillips" screwdriver. If nothing helps: CRT board is at fault and must be replaced or repaired. In this case you won't see any characters on blue CRT, just solid "blue".
good luck,
Alex.

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Blue haze/blob near the center and lower right corner.


Failing optical block. check this website
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A blue haze has appeared on the right half of the


This can be ( Haze (blue) i a failure of the color engine or convergence chips on the Sustain board/s This is not a DIY on this set. Manufacturer recommends replacement of all 3 boards when one fails. Otherwise the new board will cause a domino effect.

# nerw boards ($300) + labor. It is not a case of playing board swap jockey for a fix. It requires voltage balance between boards and the ability to measure voltage from circuit diagram points and to be able to correctly retune the convergence via a generated hatch pattern on the screen

Thanks for using FIXYA

Nov 26, 2009 | Sony Grand WEGA KF50WE610 50" Rear...

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Blue haze on tv picture


I had the same problem with mine..it was the circuit board. Good thing I had warranty. It was over $800

Mar 28, 2009 | Hitachi 51F59 51" HDTV Projection...

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Blue haze on the lower part of rear Projection TV


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

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TV set after fluid change

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2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

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BLUE TINT ON SCREEN ALL THE TIME, COLOR ADJUSTMENTS FINE


Sounds like a bad blue CRT (picture tube) ITs expensive and difficult to replace. CAll a Sony service center for an estimate. but expect to spend $500-700 to replace it.


michtech

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Yes the puddle is related to the Blue CRT coolant leaking. You are most likely going to need a new Blue CRT drive circuit board and quite possibly a new Blue CRT if the CRT got too hot from not haveing a sufficent supply of coolant. You can get replacement CRT drives and CRts at the following link.
http://servicemanuals.vstore.ca/

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Philips 43P8341/37 blue color problems


Change the coolant in the blue CRT and your picture will be new looking again. Let me know if you need more information.

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1 Answer

Blue screen


I would look for something real simple here. The problem appears to be in your component cables (I would suspect one being bad or connected to a wrong jack). If they are connected properly, try moving them a bit to see if the blue haze comes and goes or try different cables.

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