i say crack that puppy open and find the trimpots, mark their positions, and start turning the ones relating to focus and tracking. for the labels of the pots, look elsewhere in this thread and the one by lamerdeluxe (see the first page of this thread for a link).
as electronics fixes go, it's really one of the more simple things you can do. no soldering or tricky stuff, just turning a little knob with a jeweler's screwdriver. just be careful with the various little wires and ribbons when you're lifting out the top PCB, not to dislodge any connections. but if it's anything like my d50mkII, it's pretty sturdy.
if tweaking the pots doesn't work, you can always set them back to their original positions and close it up. no harm done.
oh, and don't lose the tiny screws - work over a smooth surface, not something like carpet.
/andrew
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