Audio research preamp broken

Tubes Asylum

Questions about tubes and gear that glows. FAQ

So I bought the Reference One preamp new about 20 years ago and it has just worked.

But yesterday it broke in a very weird way. It was powered off but I looked over and saw a number of lights on. The volume and balance knobs have lights to indicate the level, one light on at a time. But the left side of both were all lit, not fully rather dimly but definitely lit. The power light was on dimly as well. I tried toggling power and it had no effect. Finally I removed power cord and plugged it back in. Well the lights are all off but the preamp is dead and does not power on.

I am lucky I live in california and have 2 arc authorized repair places within a reasonable drive.

But I am a bit worried about how expensive this might be. Have any tube experts seen these odd symptoms before and if so what is the best guess of the damage? Thank you.

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Topic - Audio research preamp broken - tunenut 17:40:48 09/28/20 (13)

RE: Audio research preamp broken - fredtr 10:59:49 09/30/20 (4)

schematics - tunenut 17:01:09 10/2/20 (3)

Reference 1 - Cleantimestream 09:02:58 11/2/20 (0)

RE: schematics - Mendel 12:03:20 10/3/20 (0)

RE: schematics - fredtr 17:37:51 10/2/20 (0)

RE: Audio research preamp broken - bouncy ball 08:08:27 09/30/20 (0)

Thanks all- some comments... - tunenut 15:52:32 09/29/20 (3)

RE: Thanks all- some comments... - airtime 07:32:30 09/30/20 (2)

RE: Thanks all- some comments... - BillWojo 14:27:08 10/28/20 (0)

+1 - Mick Wolfe 10:06:19 09/30/20 (0)

RE: Audio research preamp broken - airtime 13:20:04 09/29/20 (0)

RE: Audio research preamp broken - Chip647 20:00:41 09/28/20 (1)

That happened to me with an SP-9 years ago - E-Stat 09:13:34 09/29/20 (0)

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