Question about Toshiba 42HP66 42 in. LCD Television

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Toshiba 42Hp66 No picture only sound

We read these posts, gathered information, took the back panel apart on my 42HP66 Toshiba Plasma and identified the YSUS and the ZSUS boards. It appears that it *could* be the ZSUS board since it is making a high pitched noise (you have to put your ear up to it to hear it). Sounds like it could be fried. Any suggestions? Is there a way to actually test these boards? Any special tools needed?

Thanks in advance!!

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  • rluna Apr 19, 2008

    I wanted to add a something that may be important.

    Here is the story of what happened. This happened hours after plugging in an S-video cable from the Comcast cable box. It was from an effort to upgrade from Coax (analog). It worked fine until the next morning when it just died.

  • rluna Apr 22, 2008

    I figure that this would be a tough question for someone to answer :)

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To test the zsus board check for a low resistance on the fuse to ground. sadly if the zsus is bad, the ysus and one or both of the driver boards is probably also bad. best to change all at once as a defective one can tacke out the others.

Posted on Dec 31, 2008

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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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Thank you!

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

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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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