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Intermittent Regulator problem (Read 1743 times)
Hipfan
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Intermittent Regulator problem
03/09/13 at 20:43:14
 
I'm having a problem with the right channel regulator (using a OA3). Sometimes it won't fire up or dies/dims during uses. At first I thought it was the tube, because I would replace the tube and it was OK. It just happened again. Now when I swap the left and right OA3, the right one is still dead. I have used DeoxIT on the tubes/sockets, so I'm pretty sure they are clean. Has anyone run into this problem? Thanks
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will
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Re: Intermittent Regulator problem
Reply #1 - 03/09/13 at 21:23:26
 
Not sure, but I think it could possibly be a rectifier or rectifier socket too. I think I recall that the Rectifiers come before the VRs. Have you tried cleaning the rectifiers and sockets, or switching the rectifier channels for clarification.
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Hipfan
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Re: Intermittent Regulator problem
Reply #2 - 03/09/13 at 21:50:49
 
I've encountered this problem using 3 different Rectifier tubes so I don't think it's the tube. I sprayed DeoxIT on the tube pins and scrubbed with a brush. I sprayed the pins again and put the tube in and out of the socket a couple of times. I don't have a dental/pipe cleaner, so I couldn't spray and scrub the socket itself. Switching Rectifier channels??

I'm hoping it just something in the socket that I can clean somehow, because it will cost me a small fortune in return shipping (I'm in Canada), if I have to send it to Decware Sad
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will
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Re: Intermittent Regulator problem
Reply #3 - 03/09/13 at 23:03:49
 
What I meant was switch the right channel rectifier for the left channel rectifier, but you have the problem with other Recs so it seems you ruled that out. Also sounds like you ruled out the VRs themselves. I don't guess it would hurt to clean the rectifier sockets too the best you can. I hope it is something in the socket too, something you can clean or realign ....I mean fix.
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« Last Edit: 03/09/13 at 23:04:11 by will »  

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Hipfan
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Re: Intermittent Regulator problem
Reply #4 - 03/09/13 at 23:14:16
 
Thanks will. Ya, I switched left and right. The VR fires up right after the OA3's. Today is the first time that turning the amp off and changing the Regulator didn't solve the problem temporarily. The right side is dead (OA3 & VR). The rectifier and power tubes do fire up. I will try to find a small pipe cleaner and try to clean out the socket.
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will
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Re: Intermittent Regulator problem
Reply #5 - 03/09/13 at 23:29:23
 
So the OA3 is a VR for the power tubes and the OC2 is VR for the input. Both VRs out?

Ouch, I feel for you. Once the sound of the amp gets under your skin, the thought of not having it for while makes me a little sick.
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Lon
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Re: Intermittent Regulator problem
Reply #6 - 03/09/13 at 23:35:47
 
Me too. I hate to think of parting with it!

I have a rectifier socket that gives me problems with my Torii. I resorted to wiggling the tube around and always get it juiced. I cleaned the socket, still happens. Hasn't happened for weeks, so I've been lucky. At some point it is probably time to send the amp back.
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Hipfan
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Re: Intermittent Regulator problem
Reply #7 - 03/10/13 at 00:55:07
 
Similar situation with me. The first time it happened, I swapped left and right and it was fine for weeks.
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Hipfan
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Posts: 65
Re: Intermittent Regulator problem
Reply #8 - 03/10/13 at 05:16:32
 
You were right will. I didn't clue in when you mentioned Rectifiers. I was thinking Regulators. I contacted a friend who has a lot of experience with tube amps. He asked if I had swapped out the rectifiers as well. He said that marginal rectifiers could be causing problems with the regulator tubes. I swapped out the rectifiers and now both regulators are firing! Will was bang on, but it didn't click in my mind at first. Anyway, problem solved. I just wanted to let everyone know, just in case you come across this problem.
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« Last Edit: 03/10/13 at 05:59:17 by Hipfan »  

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will
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Re: Intermittent Regulator problem
Reply #9 - 03/10/13 at 06:26:25
 
Glad to hear it Hipfan. Getting rectifier and regulator messed up in the mind happens easily for me too.....that is until finally, the whole tube thing... how they interact and influence one another sound-wise, transformed me to a tube whackjob!

Smiley
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Mac mini, Tranquility DAC, CSP3, TORII MkIV, Morrow SP-6, HR-1s...VHaudio DIY, Grover, MAC ICs...PSAudio P5 and Shunyata Defender, PI Audio and DIY power cables, HerbiesAudioLab isocups and tube dampers...
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Lon
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"Love without
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Posts: 7809
Re: Intermittent Regulator problem
Reply #10 - 03/10/13 at 13:38:07
 
Back in action! Awesome!
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Decware:ERR,HR-1,ZP3,CSP2+,Torii Mk III,PS Audio PWT+DS,PowerBases,PPP,AC-12 pcs, Denon DVD-A1UDCI, Rega RP3 +TTPSU,white belt+Exact2, VooDoo Cable:Stradivarius, Ultra Linear+Evo ICs, Iso-Pods,Mapleshade:Double Heiix Plus,Samsonv2+v3 +4" platforms,Herbie's Iso-Cup
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Hipfan
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Posts: 65
Re: Intermittent Regulator problem
Reply #11 - 03/10/13 at 21:59:53
 
Thanks for the help. I'm still pretty green when it comes to this amp, but am learning through experience. Someday I hope to go from posting for help, to actually posting help Smiley
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