1. Time for some upgrades in server hardware and software to enhance security and take AK to the next level. Please contribute what you can to sales@audiokarma.org at PayPal.com - Thanks from the AK Team
    Dismiss Notice

(Another) sa-8100 restore

Discussion in 'Pioneer Audio' started by Fusion 101, Aug 7, 2018.

  1. Fusion 101

    Fusion 101 New Member

    Messages:
    35
    Location:
    Frederick MD
    Hello. I’m attempting a restoration of a Pioneer SA-8100. It is not in terrible shape, and I did a thread on restoring the wooden case. In that thread I indicated how the amp went into protection mode after I treated the switches and pots w contact cleaner. Now I’m at the point where I’d like to follow the prescribed restoration procedure. I’ve procured replacement transistors and some caps (thanks mattsd for the list on this thread http://audiokarma.org/forums/index.php?threads/sa-8100-protection-circuit-issue.777758/page-2) but am not finding the board diagram for the “D” revision boards. Can anyone please point me in the right direction?
    Thanks in anticipation of your help,
    Luis
     
    Last edited: Aug 7, 2018

     

    Please register to disable this ad.

  2. Finnface

    Finnface New Member

    Messages:
    6
  3. Fusion 101

    Fusion 101 New Member

    Messages:
    35
    Location:
    Frederick MD
  4. Fusion 101

    Fusion 101 New Member

    Messages:
    35
    Location:
    Frederick MD
    I replaced the two 1451s and the four 726s on the power amp board and it came out of protection and played all night long (at least four hours straight, no glitches). I’m very happy (and hungover). I will continue with replacing the rest of the 726s and a few caps later on. DE2BC92C-E458-48D8-AF4C-5EC2797025DE.jpeg

    1451 replaced w 3503
    4B3BDD67-5923-4668-BD5B-CDBBD6988574.jpeg

    726s
    16C888A2-5E85-4964-A133-4504BA638598.jpeg
    771C7111-DECB-499B-A7F2-B07DB9F2414B.jpeg
     
  5. Fusion 101

    Fusion 101 New Member

    Messages:
    35
    Location:
    Frederick MD
    Playing again tonight. Sounds great w my PSB Alpha B1s and Echo Dot/Amazon Music (more Frank Marino)
     

Share This Page