Question about Toshiba Tecra S1 Notebook

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Display freaks out

My display will start to show lines in three columns at the center like someone is running a vacuum cleaner in front of an old tv. It causes the background to become discolored.

It also seems to not turn off when display is closed. This can be resolved if i press firmly near the right speaker but comes back intermittently. Sometimes with power fluxes or if the display is jiglled and recently when the screen saver kicks in.

I have taken it apart and checked the board out and all seems normal. It's like there is a short somewhere. This problem started after i began using an external mouse.

It's a nice computer for what i need and it seems like everything is still working.

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There is probably a false or intermittent contact at the display end. If the problem were in the generated signals, the whole display would be affected. A problem always in the same area of a LCD display usually means either the Berg strip or (if you're lucky) the driver cable has come slightly loose.

Since you've already opened the thing, I guess warranty considerations no longer apply. In the case of the Berg strip, perhaps the best home-made remedy is to get a strip of soft silicon foam or adhesive soundproofing, and place it against the strip so the non-adhesive area, once the screen has been reassembled, presses DELICATELY the strip against the display, preventing it from losing contact again.

Another, sadder possibility is that the driver lines inside the monitor went awry (this would explay why the screen reacts to power surges). In such a case there's unfortunately no solution, not even the "display massage" that sometimes fixes "stuck" pixels.

I'd rule out the external mouse as a coincidence.

Posted on Oct 04, 2009


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