VIORE 42 INCH HDTV HAS SOUND AND NO PICTURE - Toymax Viore 42 in. Plasma TV

When Plasma TVs have sound but no picture, it's usually the Y Buffers or the Y Main board. If it's under warranty, take it in for repair. If it's not, you'll need to decide if you want to work on it yourself or take it to someone who will repair it. Good luck!

On this TV bad Y sustain buffers do NOT usually lead to lack of picture.

For details see the link below (different TV, but same effect):
http://blog.coppelltvrepair.com/2010/10/vertical-or-horizontal-color-lines-in.html

Lack of picture is usually caused by bad YSUS (80%) or bad ZSUS (20%).

Most of the time when ZSUS fails it does not result in complete lack of picture, but only very dark, grainy and bleeding picture. Other times, though, it can be completely blank too, so do not take it for granted.

Both YSUS and ZSUS will fail relatively soon after each other. That is not because failure of one constitutes failure of the other, but because they both work shoulder to shoulder and wear out relatively evenly. Much like two car tires.

So if they both started working together they will wear out evenly and be near the end of their life cycles together.

It's rarely at the exact same time, but it's close.

And you very rarely have to replace/service both at the same time. It's just recommended due to the above reasons and the inconvenience of having to open the TV twice and wait for replacement/service twice.

For more details please see
http://www.coppelltvrepair.com
and
http://blog.coppelltvrepair.com

DISCLOSURE: We service plasma sustain boards and one can argue we are opinionated. We try to present more facts and less claims. If you have any arguments against our claims or facts we would like the chance to defend them publicly.