Question about Mitsubishi WS-65908 TV

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MITSUBISHI WS-65908 red crt going off and on

Had recently repaired the smudged colors and arked picture with a set of sanyo stk-392-570 worked great for a couple of months.. (:....... Now my red crt keeps going on and off giggled all the wires checked all connections with no effect could stay on all day or for half a movie or maybe be off for a week and be fine for a week so we watch a green picture hoping the red will come on sometime it does and sometimes will not .. anyone had this problem or have a fix or something I should check in the dark all 3 crt's are lit on the bottom by the circuit board at all times. red crt top of bulb just works when it wants too thanks

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  • NITRO FISH Aug 03, 2007

    MITSUBISHI WS 65807 is my model number not ws65908 Had recently repaired the smudged colors and arked picture with a set of sanyo stk-392-570 worked great for a couple of months.. (:....... Now my red crt keeps going on and off giggled all the wires checked all connections with no effect could stay on all day or for half a movie or maybe be off for a week and be fine for a week so we watch a green picture hoping the red will come on sometime it does and sometimes will not .. anyone had this problem or have a fix or something I should check in the dark all 3 crt's are lit on the bottom by the circuit board at all times. red crt top of bulb just works when it wants too thanks

  • Anonymous Dec 03, 2007

    Red crt going off had some arc problems but would fix itself now no red color

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1 Answer

You don't have enough soder on the STK392-570 unit ! I had to re-soder mine and is OK now

Posted on Sep 06, 2007

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1 Answer

Screen clatiry


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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
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.

578ba6c.jpg
TV set after fluid change

65af323.jpg

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.

Feb 12, 2009 | Sony Televison & Video

1 Answer

17 yr. old 35" RCA loses color intermittently. Picture & sound ok


Three guns Red Blue and Green in the picture tube of an old CRT set. If one of the guns goes out it effects that color. Sounds like one of the guns inside of the tube is going out, To costly to replace for such an old antilog set that will have to have a convertor box next month anyway.

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2 Answers

Too much red!


Do not adjust any knobs as instucted in the previous thread if you TV have a convergence problem. Doing so will only make things worse. The blog does however show you how to fix other common problems with these sets.

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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
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.

Oct 08, 2008 | Hitachi 53SDX20B 53" Rear Projection...

1 Answer

Philips tv



Sounds like your convergence chips are shorted which would make the set shut down. Its also possible that the flyback has failed but because the first symptom was the 3d look I would start with the convergence repair.

Here are some of the most common symptoms. 

Screen looks 3D
One or more colors can't be adjusted when using the convergence menu. 
Screen is bowed in but stationary.
No audio or video - typicaly occurs after having the distorted color problems listed above. 


Solution: 
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. 

Hope this helps,
Ed

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1 Answer

Yellow hue


1)Please verify your model # from back of set......

2)Reduce the color to minimum or tune in a black & white chan.
you should see gray, not yellow hue

3)Remove lower front grill cover & access panel.....locate the
focus / screen control block...turn blue screen control slightly
CW......red,green and blue must mix to equal gray

4) reset color to normal level.......reassemble

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Hitachi 43fdx20b


well i had the same t.v. and u will have to set the picture tube which is really simple it ight seem hard but if you need an hand give me an call 1-403-362-2560 and ask for jason

Dec 17, 2007 | Hitachi 43FDX20B 43" Rear Projection...

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JVC AV-48WP30 will not give a picture


Replace the convergence IC`s again using original Sanyo chips (STK 392-110 or STK 392-180). Make sure to use plenty of heat sink compound. Coat the entire back side of the chips. Also look to see if any of the low ohm resistors are burned. A shorted chip will cause the thumping sound and the set will shutdown. I am guessing that you used generic IC`s as a replacement. They are cheap and the leggs fall off when you apply too much heat during soldering. Dont wory about the CRT driver or the deflection board, they are probably fine.

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Mitsubishi ws 65807 RED CRT


What I usually find on sets like that is that there is a loose solder joint on the CRT board itslef. You must get to the bottom of the picture tubes, pull off the CRT board from the red CRT and examine all solder joints on that board. Chances are one or more will be cracked, and resoldering all joints on the board should clear up your problem.

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