zebulon1's Recent Activity

  1. zebulon1 replied to the thread Speakers arrived damaged, heart broken.

    Shipping them correctly would cost as much as the speakers. Sometimes you got to do what you gotta do, But:

    Jun 18, 2018 at 11:53 AM
  2. zebulon1 replied to the thread SX-3700 Recap/Restore Thread.

    Non-conductive paste https://www.mouser.com/ProductDetail/Aavid-Thermalloy/250G/?qs=AI63Xxb%2f5RSR9I1OxZVKSXzbm64VUkVAeVIj1fy9zXg%3d

    Jun 18, 2018 at 10:51 AM
  3. zebulon1 replied to the thread SX-750 Voltage/Protection relay issues.

    Pin one is the left channel and if you had the black probe grounded to the chassis, Q5 would be suspect as the center voltage is negative.

    Jun 17, 2018 at 9:05 PM
  4. zebulon1 replied to the thread Pioneer SA-5500II Type S.

    Type "S"? SA-5500II, "KU" and a "KC". Both are 120v Maybe yours is a multi voltage unit? Other than the transformer and primary windings...

    Jun 17, 2018 at 11:51 AM
  5. zebulon1 replied to the thread SX-750 Voltage/Protection relay issues.

    Courtesy "tsd71" Power Amplifier Assembly AWH-046 Q3 2SC1438-V vas 512-KSC2383YTA AWH-046 Q4 2SC1438-V vas 512-KSC2383YTA AWH-046 Q5...

    Jun 16, 2018 at 4:03 PM
  6. zebulon1 replied to the thread SX-980 Tuner issues after having fixed a PS issue. It's a long story....

    You've done a great job describing the issues and now you have another Pioneer back up and running. It's a waste to have them taking up...

    Jun 16, 2018 at 3:51 PM
  7. zebulon1 replied to the thread SX-450 Bando Transformer - D.O.A..

    I love it! What made you feel for the little 41/2? It probably couldn't wait to see you. It was saying "Get me away from this guy"....

    Jun 16, 2018 at 3:39 PM
  8. zebulon1 attached a file to the thread SX-980 Tuner issues after having fixed a PS issue. It's a long story....

    Look at the scat. R18 drops the 13 volts down to 7.5v for the four indicator/function lamps it taps off of Pin 18 of the PS. Be careful...

    zxxx.PNG Jun 16, 2018 at 7:36 AM
  9. zebulon1 replied to the thread Cleaning those old push switches....

    They can be dismantled but it doesn't get you that far. The way the switch is constructed, makes it difficult to clean the housing...

    Jun 15, 2018 at 10:19 PM
  10. zebulon1 replied to the thread SX-980 Tuner issues after having fixed a PS issue. It's a long story....

    Not sure what your voltages are but with the lights out it must be missing. The tuner runs on 13v's and anymore can fry the PA chips....

    Jun 15, 2018 at 11:51 AM
  11. zebulon1 replied to the thread Parts lists for recapping popular amps/receivers?.

    Its a serious labor of audio love, mostly for yourself but others benefit. A wonderful byproduct. Go through the component itemized...

    Jun 15, 2018 at 9:14 AM
  12. zebulon1 liked Bob's post in the thread Parts lists for recapping popular amps/receivers?.

    replacing parts is not what it's all about. the idea is that you list the parts on: 1) the board, 2) parts list, 3) schematics...

    Jun 15, 2018 at 9:02 AM
  13. zebulon1 replied to the thread SX-980 power supply/protection circuit board problems.

    Bring a copy of the post with you to the shop. This list will save some time and hopefully some money. Have the tech rebuild the power...

    Jun 14, 2018 at 10:53 PM