This would apply to all this series.
I got a 8711B with a bad power supply.? I tracked that down to an open trace caused by corrosion in one of the mag amp circuits.
The unit still wouldn't power on, traced it to a shorted tantalum capacitor on the +15 volt bus.? Replaced it, reassembled everything, the unit ran about 2 minutes then shut down again.? This time it was a shorted tantalum on the +12 bus, different assembly.
If this is like other gear I have had experience with, unless I go through and replace every single one of those suckers it will remain a crapshoot as to whether it will turn on each time.
It might be the age of these instruments.? My expectation is that every one of this series will have these failures and be unreliable.
Peter
