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In Reply to: RE: you'll know when it happens posted by michael22 on July 11, 2015 at 18:58:29
Which version of the A77 went up in smoke? Mk II, Mk III, Mk IV?
Mine is a Mk IV from about 1978-79 or so, and is working fine. Maybe when I sent it up to Steve Smith in Nashville, he replaced those caps and just didn't say anything about it.
With regard to the A700...
The A700 never really made it into the mainstream of Studer Revox decks, which may be why you're having a hard time finding someone who's familiar with servicing it.
I briefly worked with an A700 while I was studying music and audio in Montreux, Switzerland in 1974. I think that's when Studer Revox first introduced the product. It looked very cool, and had an A80 sort of look to the tape transport. I was not impressed with its performance or build quality. We used it maybe three or four times, and went back to our other decks.
Seriously, if you need assistance, Nashville still has some professional Studer techs around - ya just gotta make a few phone calls.
:)
Follow Ups:
The first to go up in smoke was an A-77-III two-track used by a radio station. I found the cracked 0.47 cap, and replaced it and three others of its type. The machine now works perfectly.When I ordered the replacement caps, I actually bought eight of them, anticipating the same issue on my A-77-IV four-track. This was a machine I purchased new in 1974. Late last year, this machine also went up in smoke. I replaced the four 0.47 caps and it now works fine.
Now I need to replace eight of the 'time bomb' caps in the A700. These are located on the relay board, spooling motor control, and capstan motor control.
I have the service manual, but the instructions on how to find these boards/locations is not clear.
Can someone who has worked on the A700 steer me in the right direction? I will try to make a few phone calls ..
Edits: 07/15/15
"I will try to make a few phone calls .."Finding pro techs in Nashville is easy.
Google "Studer Revox Nashville"
Edits: 07/15/15
Finding pro-techs in Nashville is easy. Getting answers for free is not always easy. That's the idea of these groups. Lee Hazen spent many hours sharing his extensive knowledge helping tape enthusiasts solve their problems (see link below). The amateurs in turn sent their unwanted equipment to Lee as payback. Because of his physical condition, Lee, unfortunately, is unable to continue doing this. I personally always share my experiences - limited to the Ampex A series, Tascam 22-4, and Revox A77 - with fellow tape enthusiasts.
Mine was (emphasis,was) a Mk. IV Dolby.
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