hi all.. I have a HP 1980b oscilloscope that has a shorted thyristor, marked 1884-0217.. after looking online and getting two quotes for a replacement ($777.77 and $600 each!) i decided to hunt a replacement. I managed to pick up a service manual for this thing, and helpfully HP lists the 1884-0217 with a manufacturer number of MAC10-2 I can't find any of those either just yet, but wondered if a replacement MAC10-3 might be ok as i can get one of those.. http://www.datasheetarchive.com/MAC10-2-datasheet.html The MAC10-2 has a maximum repetitve peak voltage of 50v, the MAC10-3 is 100v... Its used in the LVPS (pcb A1 refdes A1Q2), would having a higher maximum repetitve peak voltage cause problems when replacing a Triac/Thyristor? any advice appreciated! -- Andrew Welburn http://www.andys-arcade.com _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/