Reply to "Coupler opening at random"

GGGOGR Forum Member

If this shorted to chassis, I am sure you also damaged the coupler FET and it is shorted proving continuous voltage/current. The board needs to be tested and repaired most likely. IF you put a new coupler in and wire is all good and it immediately buzzes with power applied, turn it off until board fixed.

Couplers also can occasionally short internally, so that may be the issue, but need to ensure board not damaged. G

2/12/202:54 PM

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