Bumping an old thread in hope of someone still reading it.
My HD7100 has been working almost perfectly up until this other day. The vga port stopped working a while ago, but now also the DVI is acting strange. Only the signal from the laptop works (hdmi to hdmi/dvi adapter) and the colours in the pictures are distorted. Blue/cyan horizontal lines are moving all over the screen and the screen looks more blue/cyan. I tried different hdmi cables but the result are the same, also tried a DVI cable straight from my desktop but that doesn't give any picture. However, the start image and the menus are not affected and looks completely fine. I ordered another DVI/HDMI adapter to check if that will work, but I'm not feeling optimistic. Does anyone have any idea of what could solve the problem? Should I try dissambling it completely and clean the chips? I took it some of it apart and tried cleaning out all the dust but it didn't help. The lamp has about 600hrs use.
Any feedback would be greatly appreciated!