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au-719

  1. richiem46

    I just received a nice Sansui AU-719 for restoration

    I have previously restored a Sansui AU-717 and a AU-919 and both went well. I must really enjoy removing the notorious Sansui glue because I just purchased an AU-719 from a gentleman in Canada. It looks clean and appears to be all original. It powered up normally and came out of protection. I...
  2. Leestereo

    Leestereo's Restoration/Upgrade of a Sansui AU-719

    A little while ago (Fall, 2020), AK member @Phineas69 brought in a very nice AU-719 for a complete restoration and upgrade. PART 1: HEAD AMP CIRCUIT BOARD (F-3095) The F-3095 board contains the Head (Phono) Amplifier for moving magnet cartridges. Signal Path Components: In each channel...
  3. H

    Question about AU-719 and Strange Smell

    Hello All, I just got my first piece of vintage-type audio equipment (AU-719) The AU-719 works well, no static or other issues. However, there is rust on the back panel (I somehow missed that picture when purchasing), and the thing smells like gasoline, or something similar. I mean, pretty...
  4. RossMD

    Advise on restoration/recap Sansui AU 719

    Dear Sansui owners, i am here to ask for your valuable help on restoring and recaping a Sansui AU 719. It is my first Sansui amp but even though it had one "dead" chanel and obviously a few more problems i still got impressed and wish to hear what she's really capable of, when properly restored...
  5. PE9ZZ

    Sansui AU-719: how does the protection work?

    I have this amp on my workbench and it went into protect after some time. As per complaint. The thyristor SCR601 was bad. I should have replaced it with a replacement (MCR100) but since this was not present in my tray and there is time pressure I replaced it with a DIY thyristor consisting of an...
    • PE9ZZ
    • Thread
    • 2sf656 au-719 mcr100 protection circuit scr601 thyristor
    • Replies: 13
    • Forum: Exclusively Sansui
  6. sansui au719

    A curious anomaly - 07-series amps without power outlets

    My AU-719 has no power outlets on the rear. I only noticed it when I went to plug in a TU-719. A quick google image search turned up one other, in Denmark. Today I came across a pic of a 919 with no power outlets on the rear. It was also in Denmark.Coincidence ? They don't appear to be...
  7. Hyperion

    AU-719 on the bench

    I have an AU-719 from an AK member for attention to various small problems - going in to protection now and again, noisy controls, the usual in other words. This will be my third one of these, so I don't expect any surprises. ;) Check out the shrunken sleeve on the capacitor in the middle. ;)...
  8. SansuiJavier

    background noise in Sansui AU 719

    Hello everyone, I would appreciate your help: I have recap my AU 719, all the electrolytic capacitors (except the big ones 12000/63), black flags, components damaged by the glue and zener diodes. No transistor changed at the moment. I tried it and it comes out protection, I adjusted the bias and...
    • SansuiJavier
    • Thread
    • au 719 au 719 resistor au 719recap problems au-719 sansui sansui 719 sansui 719 hot resistors sansui 719 hum sansui 719 noise
    • Replies: 9
    • Forum: Exclusively Sansui
  9. SansuiJavier

    Strange capacitor Sansui AU-719 Power Supply

    Hello everyone, I have started to restore a beautiful sansui AU-719, and it seems that someone repaired it without much care. On board F-3101 there is connected a 1000 uF / 50 volts capacitor. Does anyone know why it is there and what function can it have? The C-615 was replaced by a 220 / 63v...
  10. Hyperion

    Well that was weird... AU-719 problem.

    I have just been bench testing an AU-719 that I reconditioned for an AK member a couple of years ago. He complained of losing a channel and at first I couldn't find anything wrong, then I found something, if I tapped the left channel (rearmost) Driver PCB it would burst into oscillation, and go...
  11. RR--

    Recapped Sansui AU-719 Protection mode help!

    Hey everyone! long time since I've been here but I recently came into a problem depriving me of my favourite Sansui. Back in 2013 I recapped my Sansui AU-719 with all new Nichicon, Panasonic and Gold Tune caps. I also replaced the main fuse for the Australian 240V system. Original post here...
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