Primaluna bias protection circuit

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Hi

Primaluna Prologue Classic has a bias protection circuit for output tube shorts.
Blew a KT90 on turn-on, LED turned red, amp went into protection mode.

Put back in EL34 tubes, which I know are good (just played them), waited at least two minutes, turn back on, no output. Tube heaters work and LED is green.

Primaluna uses a relay in the bias circuit, which is where the plate fuse in used to be.

Took the amp out of my system for now. Did I just not wait long enough?
It was a pretty bad arc in the KT90. Relay is a omron g5nb-1a-e
Does it have to cool down to reset?

Thanks
Greg

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Topic - Primaluna bias protection circuit - gkirkos 08:30:38 06/28/16 (7)

If it IS the relay, you are lucky... - Dman 05:38:04 06/29/16 (1)

RE: If it IS the relay, you are lucky... - gkirkos 09:46:26 06/29/16 (0)

RE: Primaluna bias protection circuit - Chuck Y 10:14:40 06/28/16 (0)

RE: Primaluna bias protection circuit - dirtyvinyl 09:27:46 06/28/16 (3)

RE: Primaluna bias protection circuit - pictureguy 10:13:52 06/28/16 (0)

RE: Primaluna bias protection circuit - gkirkos 09:53:14 06/28/16 (1)

RE: Primaluna bias protection circuit - dirtyvinyl 10:09:44 06/28/16 (0)

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