[Elecraft] K2 - Need tips on troubleshooting audio intermittent problem
Bill
bill at w2blc.net
Tue Sep 25 20:04:34 EDT 2012
Three very important items in the technicians tool box when searching
for intermittents:
1 - a can of Freeze (a freon product)
2 - a hair dryer
3 - a non-conductive probe
Explanation: The cold causes bad solder joints/PCB traces to open -
causing the circuit to fail. The heat will cause expansion and close the
opens in the circuits. The probe can sometimes assist by placing
physical pressure on a component/joint/PCB/socket/etc. - thus opening or
closing a circuit.
Bill W2BLC
--
IN GOD I TRUST (but, NOT a single politician)
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