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Total 9 documents matching your query.

1. [Amps] Alpha 76 "SNAP" noise (score: 1): Author: "Keith Barnes" <w5kb@w5gad.org>; Date: Sat, 20 Dec 2014 22:17:37 -0600; Greetings all, I have a 3 hole 76 that I recently "cleaned" with brush and vacuum. It tunes and runs very nicely with no bad reports however, when idling in the High Voltage position occasionally I h; /archives//html/Amps/2014-12/msg00080.html (7,017 bytes)
2. Re: [Amps] Alpha 76 "SNAP" noise (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Mon, 22 Dec 2014 09:30:22 -0500; When was the last time the filter caps were replaced? Carl KM1H Greetings all, I have a 3 hole 76 that I recently "cleaned" with brush and vacuum. It tunes and runs very nicely with no bad reports ho; /archives//html/Amps/2014-12/msg00081.html (8,116 bytes)
3. Re: [Amps] Alpha 76 "SNAP" noise (score: 1): Author: "Andy Cook, G4PIQ" <g4piq@btinternet.com>; Date: Tue, 23 Dec 2014 11:08:02 +0000; Oh yes. I heard this coming from one of our old Alpha 78s during CQWW CW at 5U5Z some years ago. It did this for quite a few hours and then in the middle of the night there was a big bang and the roo; /archives//html/Amps/2014-12/msg00082.html (6,910 bytes)
4. Re: [Amps] Alpha 76 "SNAP" noise (score: 1): Author: John G3UUT <amps@grebe.plus.com>; Date: Tue, 23 Dec 2014 23:59:30 +0000; Sorry folks, are we talking about the string of smoothing electrolytics or a ceramic RF filter cap here? I'm curious about this as when I switched my 2m amp on recently which hadn't been used for abo; /archives//html/Amps/2014-12/msg00084.html (8,157 bytes)
5. Re: [Amps] Alpha 76 "SNAP" noise (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Wed, 24 Dec 2014 10:10:06 +0800; BANG! Yep. They were talking about the electrolytics. Change 'em, before you have to change your underwear. 73, Alek. VK6APK On 24/12/2014 7:59 AM, John G3UUT wrote: Sorry folks, are we talking about; /archives//html/Amps/2014-12/msg00086.html (9,912 bytes)
6. Re: [Amps] Alpha 76 "SNAP" noise (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Tue, 23 Dec 2014 21:10:20 -0500; HV electrolytics and their associated components John. Carl KM1H Sorry folks, are we talking about the string of smoothing electrolytics or a ceramic RF filter cap here? I'm curious about this as whe; /archives//html/Amps/2014-12/msg00087.html (9,504 bytes)
7. Re: [Amps] Alpha 76 "SNAP" noise (score: 1): Author: John G3UUT <amps@grebe.plus.com>; Date: Wed, 24 Dec 2014 11:25:11 +0000; Thanks, looks like I got a timely warning I'll change them pronto. Has anybody looked into this? You would think that a small breakdown / healing of the dielectric would be muffled by the can and not; /archives//html/Amps/2014-12/msg00088.html (10,012 bytes)
8. Re: [Amps] Alpha 76 "SNAP" noise (score: 1): Author: Mike Tubby <mike@tubby.org>; Date: Wed, 14 Jan 2015 11:06:32 +0000; I suggest that you change the caps and the equalising resistors too! Our Henry Tempo 2002A started making fizzing and crack noises some 12+ years ago during a contest. L:uckily at the time I had a sp; /archives//html/Amps/2015-01/msg00106.html (9,559 bytes)
9. Re: [Amps] Alpha 76 "SNAP" noise (score: 1): Author: John G3UUT <amps@grebe.plus.com>; Date: Thu, 15 Jan 2015 10:52:37 +0000; Thanks for the note Mike and I'm going to do the sensible thing and change the lot. I had the experience of a PSU electrolytic blowing up when I was about 16 and don't wish to repeat it, especially a; /archives//html/Amps/2015-01/msg00128.html (10,489 bytes)

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