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Total 7 documents matching your query.

1. [AMPS] More SB-220 amusement(!) (score: 1): Author: n4zr@contesting.com (Pete Smith); Date: Thu, 18 Sep 1997 10:39:52; Recently, I installed a Harbach RM-100 metering/diode board in my SB-220. It fixed a low HV meter reading and has performed admirably for a couple of months. This evening, I went to tune up on 80 met; /archives//html/Amps/1997-09/msg00316.html (9,296 bytes)
2. [AMPS] More SB-220 amusement(!) (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Thu, 18 Sep 1997 10:47:27 EDT; Probably a grid choke frying and trying to tell you a problem was happening. It could also be a grid bypass capacitor, particularly if it was one of the old style rectangular ones. At that point you; /archives//html/Amps/1997-09/msg00318.html (11,390 bytes)
3. [AMPS] More SB-220 amusement(!) (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 18 Sep 97 09:58:33 -0800; plate the metering Check the tube with a high-Pot. If you don't see over 6 kV breakdown between the grid and the cold filament, the tube may have been damaged by a VHF parasitic. However, a shorted; /archives//html/Amps/1997-09/msg00319.html (12,117 bytes)
4. [AMPS] More SB-220 amusement(!) (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 18 Sep 1997 10:47:35 +0000; To: <amps@contesting.com> How long did the less than perfectly designed Heath parts work? IMHO, many of these home remedy mods are a waste of money and time. It's kind of like me selling you car wax; /archives//html/Amps/1997-09/msg00320.html (9,767 bytes)
5. [AMPS] More SB-220 amusement(!) (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 19 Sep 97 06:37:27 -0800; NOTE -- Although the e-mail input from Mr. Smith was not posted to the [AMPS] group, I'm guessing that other amplifier owners might like to be included in the ongoing analysis and repair process. Th; /archives//html/Amps/1997-09/msg00322.html (14,897 bytes)
6. [AMPS] More SB-220 amusement(!) (score: 1): Author: n4zr@contesting.com (Pete Smith); Date: Sat, 20 Sep 1997 15:44:24 -0700; Rich, it wasn't the grid shunt, but one of the plate metering resistors -- I would have traced the backside of the Harbach board, but am currently in NC attending the birth of a grandchild, and can't; /archives//html/Amps/1997-09/msg00333.html (17,568 bytes)
7. [AMPS] More SB-220 amusement(!) (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 22 Sep 97 03:58:12 -0800; ...... Yes. If the resistance of the 0.82 ohm grid current meter shunt resistor is within specifications, but the anode/plate current meter shunt resistor is kaput, something else may have happened.; /archives//html/Amps/1997-09/msg00343.html (8,972 bytes)

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