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1. [AMPS] SB-220 Follow UP (score: 1): Author: wfairclo@netcom.ca (Walter Fairclough); Date: Wed, 17 Mar 1999 11:44:17 -0500; If you recall, about a couple of months ago I requested input from the group regarding my SB-220 that went snap,crackle and pop. Eureka! The patient has survived. The amp is back in use and humming a; /archives//html/Amps/1999-03/msg00379.html (8,755 bytes)
2. [AMPS] Follow Up on the SB-220 Follow UP (score: 1): Author: wfairclo@netcom.ca (Walter Fairclough); Date: Wed, 17 Mar 1999 22:41:24 -0500; I guess I spoke too soon or its just the luck of the Irish. I was sitting in the shack with the SB-220 turned on but in standby when all of a sudden a very loud snap. No crackle, no pop, just one hel; /archives//html/Amps/1999-03/msg00394.html (9,659 bytes)
3. [AMPS] More on the SB220 (score: 1): Author: wfairclo@netcom.ca (Walter Fairclough); Date: Thu, 18 Mar 1999 10:31:43 -0500; Checked out the SB-220 this morning for damage. The only component that blew was the 0.82 ohm resistor. I noticed that the resistor is of the metal film type with a 2W rating, manufactured by Phillip; /archives//html/Amps/1999-03/msg00411.html (8,619 bytes)
4. [AMPS] Follow Up on the SB-220 Follow UP (score: 1): Author: wfairclo@netcom.ca (Walter Fairclough); Date: Thu, 18 Mar 1999 23:17:06 -0500; Further testing indicates only the 0.82 ohm resistor blew. I replaced it with Harbach supplied 0.82 3W WW. Turned amp on, everything appears normal unkeyed. Keyed, the resting plate current now reads; /archives//html/Amps/1999-03/msg00457.html (9,862 bytes)
5. [AMPS] Follow Up on the SB-220 Follow UP (score: 1): Author: wfairclo@netcom.ca (Walter Fairclough); Date: Sat, 20 Mar 1999 16:20:50 -0500; Tested everything that I could test with no 'abnormal' indications. Got desperate. Took the finals out. Shook them to hear anything strange. Tube elements in on noisy. Replaced both finals with new E; /archives//html/Amps/1999-03/msg00513.html (9,798 bytes)
6. [AMPS] SB-220 B+ Resistor (score: 1): Author: wfairclo@netcom.ca (Walter Fairclough); Date: Tue, 2 Feb 1999 12:08:00 -0500; I've read a lot on this subject but I'm still at odds as to what to use in the SB-220 What's the best replacement for RFC2? Should it be 10 ohms 10W, 2 10 ohms 10W in series or a 20 ohms 20 watts. Al; /archives//html/Amps/1999-02/msg00066.html (7,115 bytes)
7. [AMPS] SB-220 Meter Replacement (score: 1): Author: wfairclo@netcom.ca (Walter Fairclough); Date: Mon, 11 Jan 1999 18:55:15 -0500; I've been told that the plate current meter on the SB-220 can be replaced with a meter from a Heath HM-102 wattmeter. I've noticed that the meter movement on the one in the HM-102 is approx. 1/2" in; /archives//html/Amps/1999-01/msg00148.html (7,301 bytes)
8. [AMPS] SB-220 Problems (score: 1): Author: wfairclo@netcom.ca (Walter Fairclough); Date: Tue, 29 Dec 1998 19:00:45 -0500; I've run out of ideas and could use some suggestions that may help to rescue this SB-220 of mine. I had a catastrophic failure a while back due to Zener diode shorting that set off a chain reaction o; /archives//html/Amps/1998-12/msg00473.html (8,659 bytes)
9. [AMPS] SB-220 Problems (score: 1): Author: wfairclo@netcom.ca (Walter Fairclough); Date: Wed, 30 Dec 1998 14:46:38 -0500; Thanks for all the input fellas. Yep, plate current meter gone. Anyone other than Harbach have one? Sounds like the ones from Harbach require some panel work and if I'm correct they are not an exact; /archives//html/Amps/1998-12/msg00490.html (7,760 bytes)

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