Hi all
I have a very annoying issue with a lincoln DC400 SN : A1051200178 CODE: 1386
Complaints of a buzzy arc
After testing myself and with a very experienced welder i was able to notice this issue, i have performed NO Load SCR test and Active SCR tests ,also diode leak tests, checked all aux windings
From what i can hear i feel like the diodes are leaking but these tests show me the're not
Also disconnected Caps with no avail
In Short i have performed every test from the service manual
Any other test ideas would be appreciated
Regards
Matt
WelditLTD