Does anyone have a lead on the oscillator in this frame as far as repair / replacement? A friend has one with all the plugins, and one extra spot.  If I understand it, he also has an 18ghz plugin to fit that. But currently the oscillator seems kaput.  He's checked all of the fuses he could get to according to the manual, and is looking for two others that currently alude him. If anyone has had one apart and has some words on the process of working on them, he said he had a hell of a time disassembling things.  Also there are only shards of part of the case, and he seems to think the sizes of the panels are custom, and we can't rob from a donor TM-515. Would appreciate anyone who has worked on one to let us know. thanks Jim