SANSUI AU-9900 Amplifier Restoration - Part 2 - Speaker Relay Repair and Cleaning Controls

Join me on the journey of full restoration of this timeless integrated audio amplifier Sansui AU-9900. This is one of the best regarded vintage audio amplifier ever existed and made between 1975-1977 golden age of audio. The AU-9900 is identical to the superb specifications of the AU-11000 except for a slightly reduced power output.
Part 1 Link : • SANSUI AU-9900 Vintage...

[@nuwangamage2273]

No doubt Speaker realy has taken massive hit 😯😯

[@LawsonsStudio]

The melting on the contact was possibly due to sparking. If the tension was low on the contact it could bounce causing a spark. The spark could then bounce it off again and the process would carry on. It would easily overheat that way. I replaced many relay contacts (admittedly not on amps but on telecoms equipment) that have the same problem

[@RadaSolutions]

Thanks for sharing ❤

[@Riell-x6p]

That distortion is very close to the sound generated by a black hole 😂😂😂

[@RadaSolutions]

Actually Black Hole is Powered by 2x 2SA726 Transistors ... 😊😊