Tom Crane wrote: > > In article <00a301c11d14$5d70a7a0$0301010a@george>, George Tyler writes: > > >> At one time Sony used some special devices called Silicon Gate Switches, > >> they were like a thyristor but could be switched off as well as on. They > >> were used as line output and chopper in the KV1810, and as line output > >> only in the KV1820. I seem to recall they may have been used as frame > > The KV2000 Mark-II also used these for line-output. > > >> output, and even pincushion in some of the larger Sony TV's around the > >> same time. > >> > >> The most common type was the SG613, they were stupidly expensive, and > >> caused a great many KV1810's to be scrapped!. > > That is a pity. 4 or 5 years ago I did this repair. IIRC, the SG613 was 15 or > 20 (UK) pounds. It seems a reasonable price to pay to repair such nice sets... Hmmm. I think they're the ones I have a heap of. I remember something about using them in Sonys but the last time must have been 10 years ago. -Roman -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.