zebulon1's Recent Activity

  1. zebulon1 replied to the thread SX-950 Project.

    Pull it off the board carefully. You might see the issue. Some corrosion, broken hair wires? You might salvage it?

    Feb 17, 2018 at 10:48 PM
  2. zebulon1 replied to the thread Pioneer SPEC 2 restoration help.

    Agree, very nice.

    Feb 17, 2018 at 9:03 PM
  3. zebulon1 replied to the thread Pioneer SX-838 Left Channel Issues.

    My relay part number reference post from MTF: Note: Some info/Part Numbers maybe obsolete.

    Feb 16, 2018 at 12:29 PM
  4. zebulon1 replied to the thread Pioneer SX-838 Left Channel Issues.

    Protection Relay

    Feb 16, 2018 at 12:26 PM
  5. zebulon1 replied to the thread Back to audio.

    I sold the Spec 1 I had restored last week and regret it terribly. What a fantastic Pre amp. Looking for another broke one. Don't tell...

    Feb 16, 2018 at 9:18 AM
  6. zebulon1 replied to the thread Pioneer SX-838 Left Channel Issues.

    Have you worked all the switches and buttons when the issue arises? Remove the jumpers in back and use an RCA patch cord to swap the amp...

    Feb 15, 2018 at 8:57 PM
  7. zebulon1 replied to the thread STK-0050 replacement for SX-780 and others.

    The fisher 2010's I repaired, all had the STK 0080 modules and I suspect were replacements for the (More) rare, obsolete STK 0105's. The...

    Feb 15, 2018 at 12:56 PM
  8. zebulon1 attached a file to the thread STK-0050 replacement for SX-780 and others.

    I've read this thread a few times completely but can't remember if any used this module for a 100 watt amp. I get questions from a few...

    STK-0105.PNG Feb 15, 2018 at 12:49 PM
  9. zebulon1 replied to the thread Pioneer Spec 4 loud arcing sound through speaker - Help.

    Good. I guess the small fluctuations were bigger than the meter could show? Another method would be to monitor the amps output and catch...

    Feb 15, 2018 at 11:50 AM
  10. zebulon1 replied to the thread Pioneer Spec 4 loud arcing sound through speaker - Help.

    Edit completed; Thanks Matt.

    Feb 14, 2018 at 11:16 PM
  11. zebulon1 replied to the thread Pioneer Spec 4 loud arcing sound through speaker - Help.

    The 2SC1384, Q13 is the hold in for the relay. The 512-KSC2690AYS is a better more robust replacement. Q8 thru Q13, Protection circuit...

    Feb 14, 2018 at 9:32 PM
  12. zebulon1 replied to the thread Pioneer Spec 4 loud arcing sound through speaker - Help.

    http://audiokarma.org/forums/index.php?threads/pioneer-spec-4-repair-and-restoration-thread.449270/ Maybe it won't be so bad. Isolated...

    Feb 14, 2018 at 2:24 PM
  13. zebulon1 replied to the thread AEX-300-0.

    There's only a gazillion Thermistors. Plus their in two forms NTC and PTC. That part can be figured out but the rating? If the amp works...

    Feb 14, 2018 at 1:00 PM
  14. zebulon1 replied to the thread AEX-300-0.

    Correction: Pioneer part number AEX-003-0 Thermistor/Posistor It's part of the protection. Maybe you can figure out a way to disable it?...

    Feb 14, 2018 at 11:45 AM
  15. zebulon1 replied to the thread Pioneer Spec 4 loud arcing sound through speaker - Help.

    The replacement caps are fine rating wise but I wonder if you should replace the cap set with new forum listed components? There's not...

    Feb 14, 2018 at 11:23 AM