Digest for sci.electronics.repair@googlegroups.com - 3 updates in 2 topics

Chuck <chuck@mydeja.net>: Mar 23 08:13AM -0500

On Wed, 22 Mar 2017 12:19:14 -0700 (PDT), "pfjw@aol.com"
 
>So apart from the Revox, Sony and the HK2000, everything is from the US and from 'back in the day'. Much of it via dumpster-dives, and purchasing repair-shop leavings as my eyes and ears have always been larger than my wallet. I did drive 1,200 miles round-trip for the Maggies, however, after a friend auditioned them in-situ. The price was that good. They are truly worth it.
 
>Peter Wieck
>Melrose Park, PA
The Citation 16 is a brute of an amp. A speaker company I worked for
used them to test our speaker designs. One night a guy broke into our
factory and grabbed one of our 16s. The cops were chasing his car up
a steep hill and the amp fell out of the passenger door and rolled
down the hill. The outside damage was horrendous. We plugged it in
and it worked!
 
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N_Cook <diverse@tcp.co.uk>: Mar 23 12:06PM

On 17/03/2017 16:30, N_Cook wrote:
> FET, which will be the next thing to investigate, if no schematic found.
> When last powered I did not think to see if the footswitch action gated
> the opamp o/p. Any other ideas?
 
How often have I seen this. Everything seems to work component-wise
perfectly ok but something is not right. Its due to something I'm doing
wrong, either a case of RTFM (no ref to this in the owner manual) or
looking too logically at musician stuff.
The front panel has a specific section labelled Lead Gain with a line
extending out to the PRE pot and POST pot. The next section is marked
Normal Gain pot.
I was turning both "LEAD" pots to min for f/s engaging of normal and
vice-versa for lead channel, but there must be some advancement of the
POST pot for either channel to work, only seeing that in the schematic
N_Cook <diverse@tcp.co.uk>: Mar 23 12:08PM

On 18/03/2017 05:57, Adam wrote:
 
> Is this the one?
 
> https://peavey.com/forum/download/file.php?id=14455
 
> -- Adam
 
Yes, thanks for that. The only number with the model type , on the
nameplate, is 82A, and the amp being rated 50W, no reference to 65
anywhere in the amp, c'est la guerre
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