Question about Toshiba 42HPX84 42 in. HDTV-Ready Plasma Television

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Flickering dots hundreds of small green and white dots flicker over the entire screen and are more visible with darker backgrounds.

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Re: Flickering dots

The symptom you described is called diffusion. A simple alignment, normally in the power supply takes care of this problem. For the nearest Authorized Service Center near you contact Toshiba online at:$$Search?OpenForm Hope this helps

Posted on Jun 03, 2007

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I have Soney TV KDL-46EX713. Green lines come on/off the screen. Sometimes screen goes entirely green with background picture still visible. Sometimes only green lines flicker like in picture below.

Looks like power supply board fault. If you wish to get some details; check the site linked here. Pull up older posts.
Line faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD screen are similar, irrespective of its brand and screen size.

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I have this model N3735w Viewsonic LCD flatscreen TV and it is flickering. The screen is also getting darker.

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Above, download these Service manuals, it will show you how to troubleshoot, and identify what board to repair change.

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Normally this defect is due to misadjusting of PDP module voltages, these must be setting according to the sticker specification attached to on the back of PDP module

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Green hue on all inputs

Most likely there is a failure in the video processing. The flickering was from the failing components breaking down.

Your set can be serviced by an experienced tech who has spare boards and the facilities to service your set.

Jerry G.

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