- 1. [Amps] 572B Tube Failure ? (score: 1)
- Author: w5asp@earthlink.net (Joe)
- Date: Sun, 7 Jul 2002 12:22:10 -0500
- Recently we had an SB-200 which suddenly refused to work. I'm not clear as to the exact symptoms as I wasn't there at the time. Previously the unit had performed flawlessly for some years after being
- /archives//html/Amps/2002-07/msg00103.html (8,514 bytes)
- 2. [Amps] Strange Problerm (score: 1)
- Author: w5asp@earthlink.net (Joseph Staples)
- Date: Wed, 5 Jun 2002 20:55:7 -0500
- Twice within the past six months we have had amplifiers fail due to the loss of all of the power supply filter capacitors in one "bank" of the supply. Both amplifiers (an Alpha 76 and a SB-220) were
- /archives//html/Amps/2002-06/msg00032.html (8,470 bytes)
- 3. [Amps] Testing 8874s (score: 1)
- Author: "Joe Staples" <w5asp@earthlink.net>
- Date: Thu, 1 Nov 2007 14:28:14 -0500
- We have an Alpha 78 (3 holer) which has a bad (shorted) tube and need a replacement. We have found several 8874 tubes of questionable origin and unknown conditon. What is the best way to if one or mo
- /archives//html/Amps/2007-11/msg00000.html (6,475 bytes)
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