2. amps-preamps
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Who Can I send my dynakit ST-70 to for a rebuild?

I am looking for someone to re-build my Dynakit ST-70. It works as is right now but, I want to upgrade it. I want to upgrade the power supply, the caps and PC board. I also want to give it a face lift and move the inputs to the rear panel. Who does this kind of work? I know will vincent used to restore these but, I can't find a way to contact him. Does anyone else do a good job on them? Thanks.

Andy
andyprice44
mesch
3,524 posts
 
Andy, great thread. Don't intend to hijack, however feel another thread on this would just confuse.

Stuart, What was the cost of your project? I have a ST-70 that has been stored since the 60s. In great shape but needs new capacitors etc due to age. I am considering doing this myself however have not looked into it at depth.
atmasphere's avatar
atmasphere
11,931 posts
 
Mesch, if you just want to get the amp up and running, you have to fix the power supplies. The 525V main filter can is available from Antique Radio Supply in Arizona. You will also want to replace the bias power supply caps and the attendant rectifier (the original is a selenium; selenium rectifiers should be replaced when and wherever they are encountered).

If you do those things correctly its likely that the amp will run fine if the tubes are OK and it was otherwise operational when stored.
mesch
3,524 posts
 
Thanks for the info Atmasphere.
mesch
3,524 posts
 
Thanks for the info Atmasphere.
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