Repair-Restoration Tech for Vintage Sansui Amps??

Looking for recommendations of reliable Vintage Amplifier repair-restoration specialists-

-specifically with experience on the venerable SANSUI- AU line of amps from the 70's.

Anywhere in US recommendations appreciated,

Thanks much!!
I had A vintage au 717 sansui amp. Had a problem with the servo start up function . Tried to get it fixed locally but no one could fix it after 3 months of trying .

Called Terry Dewick of vintage amp repair . He does alot of mac repair and warranty . My amp was restored and at a very reasonable cost .
I also vouch for Terry Dewick.
I had a broken Kenwood KR-7050 receiver from the late 70s.
The tuner and Amp needed to be fixed.
The receiver is really well built and I wanted to see if it could be fixed.
I shipped it to Terry like 5 years ago and when the Kenwood receiver came back to me, it sounded great.
Terry fixed everything.
Old thread but Soundsmith's Peter Ledermann. He engineers parts and does repairs for Tandberg. Manufactures the famous Soundsmith MI cartridges. Lists  all the manufacturers he services and gives a 1 year warranty.
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