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

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KP-51HW40 After I turned on I get a blue screen with audio, after a couple of minutes, it turns off by itself. U unplugged from the wall, etc

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Re: KP-51HW40

The unit needs either a screen control or a new blue tube.If it needs a tube,sony is aware of many units with manufacture defective tubes

Posted on Mar 06, 2007

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My KP-51HW40 is better, but it still turn itself off

Are you sure you didn't turn the knob too far down? Just a though. I don't know off hand which one is the D board but the boards are marked. Please be careful when working on TV sets as they produce high voltage which may reside even while the sets is unplugged. Also I would do more research on this problem before purchasing a new D board. I have been told that the picture tubes in these sets go bad. G what a bummer guess what set I own :( Here is the code for 8 blinks, it looks like you may just have to replace a part on the D board.

8 times, Diagnosis: High voltage error. Possible cause: T8005 is faulty. (D board)

I hope this helps, keep in mind its hard to diagnose issues without actually being there.

Mar 07, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

TV turned off itself

Can you still turn it on?
If so, does it stay on with sound?

If the sound is ok and the picture is blue (even when changing channels, inputs, etc.) the lamp may have gone out.

Can you see the TV menu when you press the menu button on the remote or TV?

Jan 07, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Blue screen

This is easy to fix, pull off the front grill and turn the bottom left trim pot anti clockwise until the picture comes back. I am asuming the picture there and then it fades to blue. There is a step by step instruction on how to get the whole thing apart

Sep 15, 2008 | Sony KP-51HW40 51" Rear Projection...

3 Answers

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.

Aug 26, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Sony KP-51HW40 51 in. Rear Projection turns blue

First reduse the G2 voltage for the blue c.r.t,and watch if the unit works for longer period (offcource blue colour will be not present).After reducing G2 voltage to blue c.r.t still behaves the same than c.r.t is faulty and you have to replace.
Pls count the red led blinking when it goes off,incase it goes to std by mode.

Dec 14, 2007 | Sony KP-51HW40 51" Rear Projection...

2 Answers

Sony kp-51hw40

Bad blue CRT................common problem.............T.

Dec 02, 2007 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Kp-51hw40 problem

your blue tube is shorted unplug blue crt board see if set comes on and stays on!

Nov 07, 2007 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Sony KP-51HW40 fades to blue screen

you need change the ic in the soket blue [video out]

Aug 15, 2007 | Sony KP-51HW40 51" Rear Projection...

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