My L7 has developed a perplexing problem. Occasionally. when the power switch is energized a loud pop and sparks can be seen in the back of the amplifier. The HV remains fine, the power supply does not trip out, and the amplifier seems to be completely unaffected.
I have opened the RF deck and there is no sign of any arcing. Has anyone else experienced anything like this? I don't want to keep turning it on and off to try and see the exact location of the arc as I'm sure it will eventually destroy something. It doesn't do it every time I turn it on; it malfunctions about once every ten tries. Any ideas? Many thanks! Paul N1OD
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