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sx-950

  1. Kim Beneteau

    SX-950 Low output amps

    I've recapped all boards except for the tuner. On the bench I'm running a couple of mini JBL surround speakers to check for sound L/R operation. All seemed good, dragged it upstairs and hooked up to a pair of Infinity P363's and good clear sound. However, it seemed odd that as I turned up the...
  2. Kim Beneteau

    Recap of SX-950 Equalizer Amp AWF-011

    Hi new here. Just starting out on a recap of a SX-950 Equalizer Amp AWF-011. Having difficulty locating replacement caps 647-UKL1H010KDDANA 1uF 50v (C1 & C2) neither Mouser or Digi-Key have it in stock and not sure what part might be an equivalent replacement?
  3. N

    Looking for a volume control for an SX-950...

    I've been searching for an ACV-164 to replace my SX 950 volume control which has a snapped shaft. Does anyone have any idea's?
  4. Timothy Flath

    Pioneer SX-950 Restoration Project

    Thought I would share my project video series from a restoration I recently did of a tired old Vintage SX-950 receiver I recently finished restoring. It now has a new lease on life and will still serve for many more decades to come. Jump to the last part to see the final outcome. Here is part...
    • Timothy Flath
    • Thread
    • pioneer rebuild receiver refurbish restoration sx-950 upgrade
    • Replies: 90
    • Forum: Pioneer Audio
  5. MBuras

    Pioneer SX-950 PS Rebuild or Not?

    I know, that's a loaded question. :rolleyes: I've restored a few SX-950's over the years. A friend recently picked one up and just wants the bare minimum to get it into a reliable state, not trying for a full restoration. Was planning to rebuild the power board (usually very toasty in my...
    • MBuras
    • Thread
    • low hours pioneer power supply rebuild sx-950
    • Replies: 13
    • Forum: Pioneer Audio
  6. Rob357

    Pioneer SX-1050 had a dead channel

    Hello to all the enthusiasts out there. I have been lurking around here since 7/1/2007. My only post was to list my Pioneer gear. Now I am asking for some advice. The 1050 had a low and distorted right channel, that is what started this odyssey. I had recapped the awr-103a board awhile ago, not...
  7. ukfan4sure!

    SX-850 vs SX-950 Differences

    I have both an SX-850 and an SX-950. In casual observation, I can find little physical differences in the two units, other than 15KuF vs 22KuF power capacitors, and 2 vs 3 speaker hookups. Is it the ratings on the output transisitors that make the difference between 65 and 85 WPC? I have a...
  8. P

    SX-950 left channel fried when I dropped the needle!! TWICE!

    Hello All...I am completely mystified. This is the second time this exact same thing has happened. When queuing up a record to play on my PL-570 I accidentally dropped the needle onto the surface and it blew the left channel of my SX-950. First a pop, then smoke. Both times it was the left...
  9. AZstone

    Problems with SX 950 phono input

    Hello - I've been lurking for quite some time, and I've enjoyed reading through all of the posts specifically in the Pioneer forum. I've been waiting for my chance to get my hands on one of these beauties and I finally did. SX 950 in impeccable condition, all original parts and cosmetically...
  10. Jcamp

    Pioneer SX-950 Repair

    Hello, I need some help with a SX-950. I received it with the following components blown Four power transistor - Replaced all with "original" 2SB557/2SD427 from eBay Both 2SB536 One C1628 Both Bias pots blown 150 ohm R40,R39 I have replaced these transistors 2SB536 with KSA940 2SD381 with...
    • Jcamp
    • Thread
    • pioneer pioneer 950 pioneer sx pioneer sx 950 pioneer sx-950 pioneer sx-950 repair sx-950
    • Replies: 14
    • Forum: Pioneer Audio
  11. Adorno

    SX-950 -- Noisy phono stage (AWF-011) after re-cap

    Hi all -- first, a thanks to everyone posting information about these amps. My father had one while I was growing up and was very attached to it and the sound. It's nice to know I'm not alone in loving these old receivers and that there is perhaps more to them than just nostalgia. I've just...
  12. Super Noob

    Project: SX-950

    Here comes my latest rebuild... local SX-950. https://drive.google.com/open?id=1qMku989EUw8sRdkSVOmchybrtVHA-dwv The caps lists was a copy from MTF / MattSD... it has some errors but may be a good starting point for someone who might attempt a rebuild. I recommend the following = new...
  13. HairySatchel

    SX-950 1050 1250 Selector Switch Assembly rebuild

    I'm seeking words of wisdom in regards to switching out the old switches on the AWS-094 and AWS-095 boards. They no longer stay engaged. Has anyone tried to use a modern 6PDT and similar as a replacement? Which brand works best with the least amount of modification? SX-950 Input Selector...
  14. Johnny_Law

    SX-950 In Protection ... maybe more issues SOLVED

    PROTECTION ISSUE SOLVED! NOTE TO EVERYONE: PAY ATTENTION TO YOUR REPLACEMENT TRANSISTORS! AN NPN TRANSISTOR WON'T WORK IN A PNP SPOT! THANKS TO @petehall347 ! Picked up an SX-950 which was guaranteed, in person, to my face, to work great. Pretty excited, my first 'big' Pioneer. Of course...
  15. lennyfishman

    Pioneer SX-950 No Speaker Output

    Hi All, First time posting here since one of my goals next year is fixing up this old Pioneer SX-950 amp that I received for free a couple months ago. Searching this site I was able to find the repair manual in addition to several other interesting documents and threads. Here is what is working...
  16. K

    SX-950 lights working, but no sound, and no relay click. Preamp works and voltages are all good.

    I know there a lot of similar posts and I've read through many of them, but I still can't figure out the problem. When I turn on the unit the relay never switches on and no sound will come out. I checked the pre-amp with a separate amplifier and it is producing good sound. I've checked all the...
    • kevdubs
    • Thread
    • no sound pioneer protection relay sx-950
    • Replies: 10
    • Forum: Pioneer Audio
  17. R

    Pioneer SX-950

    I recently acquired by SX-950 and want to know what I can do about the high distortion the and low volume. When I hook my Android phone up to accessory it sounds good at low volume. If I turn it up past a quarter turn it starts popping really bad. The FM is very fuzzy also and very low sound...
  18. R

    Reseating power transistors on SX-950

    I will soon be recapping(+transistors) the power amp on my SX-950. Since it looks like dismounting the heat sink will be required to access the back of this board, per advice found on this forum, I figured that this is an opportune time to remount the power transistors to the heat sink. I am...
    • rkgren1
    • Thread
    • compound heat sink heat transfer sx-950 transistors
    • Replies: 15
    • Forum: Pioneer Audio
  19. R

    Anyone have experience with a Pioneer SX-950?

    Seller says it is fully functional. Needs a bit of cleaning on the wood on the right side. It was slid against a painted surface. I can fix that easily. It will look nice once it is cleaned up. He has a small electronic shop, so he can demo it for me. He wants $125.
  20. mckern

    Pioneer SX-950 lamps dim when I select speakers

    Hi all, with all of the help and information on this forum, I've rebuilt the AWR-101 and AWF-011 boards in my SX-950 and it sounds great. I feel like I'm in my last-mile problems though: the selector lamps (input and speakers) dim when I select a pair of speakers. The voltages on AWR-101 pins...
    • mckern
    • Thread
    • awr-101 bulbs dimming lamps pioneer sx-950
    • Replies: 63
    • Forum: Pioneer Audio
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