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About a year ago, I finished a new Stereo 70 (all new parts). I picked the Japanese Azuma ceramic sockets for the power tubes and for the rectifier. A few weeks ago, I rolled-in a fairly new set of power tubes and one of them red-plated. I tried to re-tension the contact for pin 5 in the socket where the EL34 red-plated and also rotated the tubes to different sockets. No red-plating anywhere right after that, though the event caused me to take the amp out of service.I am pretty confident in the soldering to the socket lugs underneath. The amp is not old, and I am a bit surprised this happened. I could try cleaning and re-tensioning all of the contacts.
If not the socket (or the soldering), then what? The amp was running great for the past year, and I had just made a check of the internal voltages before the red-plate incident, and everything was right. Would you folks care to share experiences and thoughts on which currently available sockets may be more reliable, assuming it is an issue with the socket?
Thanks.
Peter
Edits: 08/14/14
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Topic - Tube Socket Reliability - petercapo 13:11:35 08/14/14 (45)
- RE: Tube Socket Reliability - sony6060 07:09:55 08/29/14 (0)
- RE:Best Tube Socket - unclestu 19:02:50 08/16/14 (1)
- Photo - unclestu 11:54:45 08/17/14 (0)
- RE: Tube Socket Reliability - Michael Samra 12:39:26 08/16/14 (9)
- RE: Tube Socket Reliability - unclestu 17:25:10 08/16/14 (6)
- RE: Tube Socket Reliability - Michael Samra 13:24:02 08/17/14 (5)
- RE: Tube Socket Reliability - Al Noakes 07:44:53 08/21/14 (1)
- RE: Tube Socket Reliability - llwhtt 14:53:55 08/22/14 (0)
- RE: Tube Socket Reliability - unclestu 13:54:50 08/17/14 (2)
- RE: Tube Socket Reliability - Michael Samra 18:49:50 08/17/14 (1)
- I meant I don't dispute what your saying Stu. - Michael Samra 03:41:36 08/18/14 (0)
- RE: Tube Socket Reliability - petercapo 15:30:10 08/16/14 (1)
- RE: Tube Socket Reliability - FenderLover 17:01:50 08/16/14 (0)
- Belton are the best 'new stuff' I have run across {EBY Mil spec for radar were the best ever made... - Cleantimestream 09:26:39 08/15/14 (7)
- RE: Belton are the best 'new stuff' I have run across {EBY Mil spec for radar were the best ever made... - FenderLover 02:01:44 08/16/14 (4)
- RE: Belton are the best 'new stuff' I have run across {EBY Mil spec for radar were the best ever made... - Michael Samra 12:20:31 08/16/14 (0)
- RE: Belton are the best 'new stuff' I have run across {EBY Mil spec for radar were the best ever made... - Cleantimestream 07:49:25 08/16/14 (2)
- RE: Belton are the best 'new stuff' I have run across {EBY Mil spec for radar were the best ever made... - Alpha Al 11:13:01 08/16/14 (1)
- James Millen invented the first predictable/reliable mech. RFchoke? Thank You Al~nT - Cleantimestream 14:08:18 08/16/14 (0)
- RE: Belton are the best 'new stuff' I have run across {EBY Mil spec for radar were the best ever made... - Eli Duttman 13:20:16 08/15/14 (1)
- Micanol Suppresses vibration? Thank you Eli, one more thing I learned today~nT - Cleantimestream 17:14:32 08/15/14 (0)
- I only use USA-made NOS - Triode_Kingdom 07:10:44 08/15/14 (7)
- RE: I only use USA-made NOS - petercapo 07:12:54 08/15/14 (6)
- RE: I only use USA-made NOS - Triode_Kingdom 08:14:19 08/15/14 (5)
- RE: I only use USA-made NOS - Jim McShane 11:50:31 08/15/14 (0)
- RE: I only use USA-made NOS - petercapo 08:16:26 08/15/14 (3)
- RE: I only use USA-made NOS - Triode_Kingdom 08:34:51 08/15/14 (2)
- RE: I only use USA-made NOS - petercapo 08:37:58 08/15/14 (1)
- RE: I only use USA-made NOS - Triode_Kingdom 08:47:54 08/15/14 (0)
- RE: Tube Socket Reliability - sayntjack 22:36:40 08/14/14 (0)
- RE: Tube Socket Reliability - twystd 20:05:10 08/14/14 (0)
- RE: Tube Socket Reliability - Victor Khomenko 15:30:29 08/14/14 (13)
- Photo - petercapo 16:57:29 08/14/14 (12)
- RE: Photo - unclestu 18:07:45 08/14/14 (0)
- RE: Photo - Tre' 17:26:57 08/14/14 (5)
- RE: Photo - petercapo 17:31:42 08/14/14 (4)
- That's the style I don't like. - Victor Khomenko 17:25:52 08/14/14 (4)
- RE: That's the style I don't like. - petercapo 10:12:53 08/15/14 (3)
- RE: That's the style I don't like. - Victor Khomenko 19:29:07 08/15/14 (2)
- RE: That's the style I don't like. - petercapo 06:04:50 08/16/14 (1)
- That is good document - Victor Khomenko 15:14:18 08/18/14 (0)