Question about Toshiba 42HP66 42 in. LCD Television

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Toshiba 42HP66 Picture fades in when turned on. After taking off the back  panel noticed the Zsus board had a bad fuse on the 180V Side. After replacing  the fuse the tv wont power on and the power supply kinda locks it self out. If I  remove the fuse that I put in I get the TV to turn on to the fuzzy fading picture.

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  • Anonymous Jan 31, 2009

    When I turn on my TV the only colors that appear are blues and grays, it takes about 5 minutes or so for all of the colors to appear and then the brighter colors seem to pulse. It has gotten progressively worse. Is there anything I can do to fix this problem myself? the TV is only 2 years old.

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To start, the module with the blown fuse will have to be replaced. The rest of the boards will have to be verified to know which other ones may have been the cause of the failure.

You will have to give the set out for factory service to have it working again.

Jerry G.

Posted on Jun 06, 2008

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I have a toshiba 50hp plasma t.v. and it made a popping sound and the picture went dark and somewhAT FUZZY. CAN STILL SEE PICTURE BUT BAD COLOR AND ITS DARK. IS THIS ANN EASY FIX OR IS IT NOW TRASH?


I am ready to bet my lunch that you have a bad ZSUS board.
There is less than 1% chance I would go hungry and that's with around of thousand of such repairs on my back.
This is the link for what you need:
http://www.coppelltvrepair.com/p/263/75003043-zsus-board-for-toshiba-50hp66-repair-service
Good luck!

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I have a Toshiba 42HP66 Plasma and I have no picture or sound. It worked great and than the next time I turned it on there was nothing. It would turn on and turn off right away. I had pulled the wires to...


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The Zsus and Ysus Board are common failures. It is a possibility that the Plasma Panel also is the problem. If you take the back off, (make sure unplug the set first), the board on your left is the Zsus and is marked accordingly. The Ysus is on the right of the Power supply. Look for fuses being open on the Zsus Board and Power Supply using a ohm meter. If they are, I would replace both Zsus and Ysus. They seen to fail together many times. If the fuses are good. I would suspect the Plasma Panel.
I hope this helps,
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Part of the power supply is in protect mode. There is most likely a short or something failed on one or more of the boards.
The service rep would swap out boards to locate the fault. Then he would leave the new board(s) in the set, and perform any necessary adjustments.
Take the set in for an estimate before approving repairs. There are many times these sets are not worth serving when they are out of warranty.
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try replaced z board Manufacturer Toshiba Part Number 75003032 Description ZSUS PCB ASSY

Oct 02, 2009 | Toshiba 42HP66 42 in. LCD Television

1 Answer

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Hello, You most likely have a bad Y sustain board! Part #'s are:

6871QYH053A, 6871QYH053B, 6870QYH005B, 6871QYH953A, 6870QYH105B.

Here is a link to the part you need!

http://www.discount-merchant.com/Y-SUSTAIN-PN-6871QYH053A-6871QYH053B-6870QYH005B-p/vizio-sku9506.htm

I hope this help you! Please feel free to give me a call or message me if you have any questions! Ask for Dave!

Thank you! :-)

Dave
1-503-432-9904
pleasefixitdave@yahoo.com

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How to change lamp in toshiba 42hp66?


This TV is a plasma according to the model number you've posted. It does not use a lamp.
If the plasma does not show any picture, there might be a defective Ysus, Zsus or power suppy board.
There is a high failure rate on the Ysus and Zsus boards.
Search for a Ysus and Zsus board on google and you should find them.
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