Televideo 970

Hi All, I got a lovely Televideo 970 terminal from another list-member over the weekend. Aside from some PSU capacitor issues, it needs a little TLC: 1) The EMI filter had gone open-circuit - it's one of those metal can types which is integrated with the IEC power input connector. Are these still obtainable anywhere? It seems like equipment these days just has the filtering directly on the PSU board, rather than as a separate module. I've just bypassed it for testing, but I don't want to leave it like that. 2) I have a faulty back-tab, left shift and return key (return's simply unresponsive, while the other two stick down). Do the keycaps on these terminals simply pull off, or is there some trick to removal? I did some experimental prying, but didn't want to try too hard and risk snapping the switch stem. I don't know if switches are still available, but worst-case I can swap the faulty ones with ones for some of the 'special' keys that I'm extremely unlikely to ever use. cheers Jules