Sorry for necroing this thread, but I'd like a copy of that schematic if you have it?

Yup! It's generally to eliminate the possibility that the effects loop sockets themselves may have oxidised/shorted.

Looking at the schematic for the Escort 30, with the exception of the preamp (and the fact there are fuzz controls, etc.) there are a lot of similarities indeed to it.

Double checking the actual cabinet itself, I can actually see an "D.M.I. Inspected" stamp, furthering the case for it being a Dallas Music Industries product (be it re-badged as "ELEM").

I carefully metered and checked most of the electrolytics for shorts initially, then I re-soldered the loose capacitor. Plugged it in via my dim bulb tester and flicked it on ... nothing... 

...After a brief poke and prod with a plastic paintbrush handle to quickly and very crudely check for any more loose or dry joints, there was life - but it the connection was actually temperamental at the power switch! I really should've relied on Occam's Razor more! Re-soldering the wire joins on the switch and the pilot light means that it *seems* to be working - although I am getting life from touching the jack sockets with my hands (i.e. changes in the noise levels and also responses from fiddling with the three band EQ knobs), a cable doesn't seem to yield much response, so my next point of investigation are the jack sockets themselves 

Will update a little later when I progress a bit further with it - I also spent a little bit of time trying to get rid of the excess aluminium oxidisation on the speaker, supporting bracket, fasteners, etc., but trying to do so whilst avoiding damage to any existing markings is proving quite a challenge.

Thanks teemuk and Roly for the suggestions and observations.

I have already built a dim bulb tester, and have yet to power this amp up, so will put it through that at some point in the next day or two. Fuses look fine at the moment, so that is always a good sign.

The pictures didn't really do a particularly good job of illustrating the fact that the 1000uF/63V is actually *very* loose, i.e. the solder joint has been damaged, so that would be the first fix. Similarly, on the back of the control pots, the polystyrene cap that it's on there has actually snapped off, so I will attempt to put that right too.

With regards to who manufactured the amp, the closest I actually got to discovering the original maker was the fact that the board has the term "Pro Artiste" on it. At a guess, this seems to be a rebadged and cloned Sound City amp - given that the Sound City Pro Artiste 30 is about the correct ballpark for power output, the major difference being that it was a 2x10. Even the control panel and knobs look identical to it!

As an aside, thank you to teemuk again for his generosity in terms of the downloadable book - I grabbed a copy last night and am slowing making my way though the wealth of information in there

Hi everyone,

I came across this amp in my purchasing of several smaller combos for spares and repairs - does anybody have any background information, or technical information about it?

Despite the damage it has suffered, the components look high quality, and it would be a shame to not be able to restore this!




gaioshin