sx-950

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...

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?

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?

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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.

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...