|The week of repairing calculators|
Message #1 Posted by David Ramsey on 24 Aug 2011, 11:20 a.m.
Well, so far:
-- 9830 tape drive problem: Paused until I can drive to San Jose and have a debugging session with EE friend that actually has a logic analyzer.
-- 9810 printer repair: Awaiting Cold Shrink™ tubing. Printer removed and will clean today.
-- Secondary 9810 display repair: see item #1. This parts machine might not have been my wisest purchase.
-- SR-60 card reader gummy wheel repair: finally got around to this yesterday. Turned out to be much simpler than I'd thought it would be, about on par with 9810 card reader work. Typical O ring repair that works perfectly.
-- SR-60 power supply(?) repair: sadly, the SR-60-- which, for a few shining minutes, was completely functional-- promptly died in the middle of running a test program. Display blanked out and calculator appears dead. When turned off and on the display will flash for a brief second, and sometimes the printer stutters. Will check PS voltages today.
So, overall...not doing that well (though certainly not for the lack of helpful suggestions from the folks here!) I think I really need to learn some basic electronics and graduate beyond a $10 Radio Shack multimeter.