TP1635 measures about -30mV.
TP1876 measures about 16.5 volts, should be 7.6 volts.
There were two of those 47uF tantalums on the z-axis board- they checked OK but I figure I might as well get them out. Looking at the SM they were supposed to have been replaced by 220uF caps soon before my serial number, so that's what I replaced them with.
I also wanted to make sure the CRT heater voltage was present- measured about 8 VAC RMS at pins 8 & 9 on P1704. A little high, but I guess that's OK.
Tomorrow I will begin looking around why TP1876 is high.
Further ideas?
Thanks,
Keith Ostertag
