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1. [Amps] L7 FIXED (was L7 problems) (score: 1): Author: "Paul Kraemer" <elespe@lisco.com>; Date: Sun, 11 Dec 2016 11:08:53 -0600; The L7 amplifier with the negative grid current on standby has been repaired and tested. The problem was not the transformer I was suspecting but rather one of the 0.05mfd disc ceramic filament bypas; /archives//html/Amps/2016-12/msg00268.html (7,998 bytes)
2. Re: [Amps] L7 FIXED (was L7 problems) (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Mon, 12 Dec 2016 07:07:59 +0800; The best thing about a forum like this, is reading the happy ending stories and learning just that little bit more about symptoms, troubleshooting and fixes. Thanks for the follow up Paul. 73 from th; /archives//html/Amps/2016-12/msg00283.html (9,926 bytes)
3. Re: [Amps] L7 FIXED (was L7 problems) (score: 1): Author: "Jim W7RY" <jimw7ry@gmail.com>; Date: Sun, 11 Dec 2016 19:21:23 -0600; Better to put a diode here to protect the meters. See the link: http://www.w8ji.com/fault_protection.htm D2 in the last diagram. I put a spot for one on my SB220 replacement diode/metering board. 73; /archives//html/Amps/2016-12/msg00288.html (10,099 bytes)
4. Re: [Amps] L7 FIXED (was L7 problems) (score: 1): Author: "Jim W7RY" <jimw7ry@gmail.com>; Date: Sun, 11 Dec 2016 19:22:41 -0600; Glad you found it Paul! And I put the new "D2" diode in the power supply because that is where the caps are. 73 Merry Christmas Jim W7RY/0 The L7 amplifier with the negative grid current on standby h; /archives//html/Amps/2016-12/msg00289.html (10,027 bytes)
5. [Amps] L7 FIXED (was L7 problems) (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Mon, 12 Dec 2016 07:09:29 -0800; Better to put a diode here to protect the meters. See the link: D2 in the last diagram. I put a spot for one on my SB220 replacement diode/metering board. 73 Jim W7RY is then wired directly between B; /archives//html/Amps/2016-12/msg00298.html (10,329 bytes)
6. Re: [Amps] L7 FIXED (was L7 problems) (score: 1): Author: "Jim W7RY" <jimw7ry@gmail.com>; Date: Sun, 18 Dec 2016 12:08:16 -0600; Jim... You must have missed this statement from W8JI's site... "The grid, being directly between the anode and cathode, shields the filament-cathode from the anode. Very little cathode fault current; /archives//html/Amps/2016-12/msg00416.html (11,342 bytes)
7. Re: [Amps] L7 FIXED (was L7 problems) (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Sun, 18 Dec 2016 23:57:27 -0800; WILL safely work... provided ALL the grid pins ARE directly bonded to chassis.....and the grid fuse is wired between chassis..and negative terminal of grid meter..or grid meter shunt. In that case,; /archives//html/Amps/2016-12/msg00427.html (13,750 bytes)

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