SANSUI AU-777 RESTORATION

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charles

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When I saw the excellent restoration job that Gareth80 did  on a Sansui AU-999, I decided that it is time to restore my AU 777.

The AU 777 was Sansui's first Solid State amplifier model, so from a collectors view, I had to restore it. 

Mine has been in storage for a long time, so I took it out and first cleaned it. Cosmetically it is in a good condition with all its original knobs.

It did not even switch on. Not even an indication light.

a Friend friend of mine helped me to restore/repair the AU 777. After lots of intensive work during a couple of days the AU 777 works well.

This one had a lot of faults. To mention only some:

Replaced > 10 capacitors.
Replaced 2 output transistors that were leaky.
The two incandescent bulbs with holders that form part of the protection circuit were removed and replaced with some LED's- obvious
the set won''t switch on. Replaced the LED's with similar bulbs and holders as the original ones (not easy to find).
Replaced some potentiometers.

Set works fine. Output +/- 35 Watt.

There is still some minor restoration work to be done.

I will later post some pictures of the restored AU-777

 

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