Question about Sony KP-51HW40 51" Rear Projection Television

1 Answer

Red Screen After the set warms up, the screen begins to fade to red. After about 3-5 minutes the screen is completely red.

Posted by Danny Case on

  • Danny Case Jun 08, 2006

    Thanks, dude! We'll take it in for repairs.

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Anonymous

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  • 53 Answers

Sad to say your tv needs to go to a shop with a re-juvinator. the process takes about 3-hrs. bench fee about 150 bucks. sad but true

Posted on Jun 07, 2006

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SCREEN IS COMPLETLY RED AFTER 15 MIN OR SO

Yes, the red picture tube has what is called a cathode to heater short. The only solution is to replace the tube. Problem is that it is no longer availible. There is a solution however. The tube can be pulled and sent off for rebuild to a company called Video Display. They do good work but this repair is expensive. Usually running around $400 to $500.
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KP-65WV700 Red and Green Lamps fade out after about 15 seconds

If you know how to adjust G2 (screen) volt adjustment then increase a little bit screen volts of red and green lamp.
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CRT problem

you need to adjust the red screen control of the crt under the speaker grill turn it down with the tv running.
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HITACHI 53SBX59B, projection lights don't line up.

It sounds like bad solder connections in the convergence output circuit. It may also be an intermittant convergence output ic which will need to be replaced.
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Projection lights don't line up

Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
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  • Halos around objects
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Example Photo:
ee1ca68.jpg

You can see more examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
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KP-51HW40 Sony 51" Fades to blue screen

The service manual on page 8 shows how to adjust the Red/Blue/Green screen voltages. To get to the adjustment board, take the front speaker grill off (two screws at the bottom left and right) and set it aside. No need to disconnect any wires. Then remove the plywood board with 4 screws that exposes the screen/focus adjustments. The top 3 adjustments are for focus, and you need not mess with these. The bottom 3 adjustments are for Red/Blue/Green screen voltage rough adjustments. My screen showed red lines, so I had to turn the bottom right adjustment with a philips head screwdriver just slightly until the red gun retrace lines where no longer visible.
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Red screen

Hi,
sounds like a picture tube problem its a problem that probably cant be fixed only by a professional
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SONY KP-57HW40

you are experiencing one or more of three things
1.the crt itself is damaged
2. the vertical ic on blue crt board is bad
3. the focus block is bad
if you hire a sony authorized technician they should be well aware of this problem.
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