[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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