- 1. [Amps] SB220 plate meter question (score: 1)
- Author: Warren Volz <warren@warrenvolz.com>
- Date: Tue, 07 Nov 2017 01:41:04 -0700
- All, My SB-220 is sick again. The plate meter works fine after start up but then ~15-20 minutes later it starts to show lower and lower values. Eventually it doesn't show any plate current, but the a
- /archives//html/Amps/2017-11/msg00038.html (6,495 bytes)
- 2. Re: [Amps] SB220 plate meter question (score: 1)
- Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
- Date: Tue, 7 Nov 2017 10:55:41 +0200
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- /archives//html/Amps/2017-11/msg00039.html (6,389 bytes)
- 3. Re: [Amps] SB220 plate meter question (score: 1)
- Author: gudguyham--- via Amps <amps@contesting.com>
- Date: Tue, 7 Nov 2017 05:50:45 -0500
- Warren, well it could be a bad solder joint. The SB-220 plate meter has a PLUS red wire and a MINUS black wire coming off the meter going to the rectifier board. You must check the solder joints at t
- /archives//html/Amps/2017-11/msg00040.html (8,312 bytes)
- 4. Re: [Amps] SB220 plate meter question (score: 1)
- Author: "Jim W7RY" <jimw7ry@gmail.com>
- Date: Tue, 7 Nov 2017 06:50:45 -0600
- With the amplifier un-plugged.... Hook a small variable power supply across R1. Adjust it for mid scale. See if the current slowly goes down. Then you can troubleshoot it without high voltage. Observ
- /archives//html/Amps/2017-11/msg00041.html (9,204 bytes)
- 5. Re: [Amps] SB220 plate meter question (score: 1)
- Author: Warren Volz <warren@warrenvolz.com>
- Date: Wed, 21 Nov 2018 00:51:58 -0700
- Lou, I realized I never followed up with you on your reply. So a year later here is the result of my investigation. The red + wire for the plate meter had some melted insulation and while I dont thin
- /archives//html/Amps/2018-11/msg00071.html (9,327 bytes)
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