Originally Posted by rcrowley
Certain vintages of Mackie mixers are notorious for failing internal ribbon cable connectors. Just as there was an era of bad electrolytic capacitors on many brands of computer motherboards.
Spraying cleaner into the external opening of a 1/4 inch phone jack will ALMOST NEVER actually clean the normaling contacts. And it is easy to test whether the intermittent problem is in the insert jack or not.
That's right, if you're going to spray anywhere though.... so, for the benefit if the op, how does he perform this easy test?
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