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... Tom. -- Tom Crane, Dept. Physics, Royal Holloway, University of London, Egham Hill, Egham, Surrey, TW20 0EX, England. Email: uhap023@vms.rhbnc.ac.uk SPAN: 19.875 Fax: +44 (0) 1784 472794 -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics