[Test-Equipment] 71 ohm ceramic disk capacitor

[Lee]

Gentlemen, after spending 6 1/2 hours in an HP Spectrum Analyzer I narrowed
it down to the AGC circuit. Then found an A14 line tied to that circuit by
an isolation diode that goes to 3 other boards was ­1.7volts instead of 7.7
volts, pulled parts along that line and found a ceramic disk capacitor
marked as a 220pf that read 71 ohms on the Fluke DMM. Replaced it, and
suddenly had a working machine again. That was a very expensive disk
capacitor.. The unit then passed all performance tests which required
another 2 hours to complete.

Conclusion: don¹t get caught up looking at op amps and A-D converters
forgetting about the simple things.

Lee