When you cleaned the drive - did you take the A1000 apart to get the drive out? If so, you did replace the metal shield over the drive? For giggles, try a few sheets of aluminum foil lying on top of the case and then put the monitor back on to to see if that "fixes" things. Not that you would want to keep things that way, just as a test.
Does anyone here know whether over time the old A108X monitors might emit MORE RF interference?
Good luck!
