sx-626

I picked up this nice little receiver (with 2 pair of speaker plugs!) at an 'estate' sale over the weekend. I got it bundled with a pair of Advent 3002 speakers and a Technics SL-1400 Mk 2. The receiver looks to have been fully recapped with all bulbs working, the speakers have been refoamed...

Hey all - I'm an experienced electronic tech who is new to the site. I am attempting to repair a friend's SX-626. The right channel is working, the left channel is not. I have traced the problem to the main output board, and am inputting a 2kHz 400mV audio signal through the AUX input, and...

Greetings, AK'ers. Thank you for tuning in here. I was listening to a digital conversion from my TV in AUX, signal had lots of heavy bass rumbling in the scene, and the 626 went "pop" and there was distortion on the left output. This unit has been recapped, it has been working well for two...

I acquired this SX-626 some time back in a no-op state. Finally taking a look at it, I noticed one of the leads on the power amp was broken (E4), and it looks like it had been recapped at some point. Also note the lack of a jumper for the negative points at the C13 / C14 replacements. The...

Hello All, I'm checking out an SX-626 for a friend that has a couple of mysteries I could use an assist with. Y'all were a great help with my SA-6500ii problem last month, so thanks again! I'm hoping we can get to the bottom of things again. To set the stage, this is a clean and totally...

Recently acquired another SX-626 (1973 version). After checking it out I powered it up, there was a noticable hum in the tuner, nowhere else. After I completely recapped the unit (including the AWE-031-0 tuner assembly) and set the bias to 18mV the hum remains. Any ideas?

Had a few extra days off tied to this weekend & looking for a vintage rig to gift to a co-worker. Lo and behold there popped up a non-working SX-626. The pictures showed the pre-amp jumpers missing, so I thought this unit might just need some refreshed components. At pickup the previous...

Just finished recapping a lovely little SX-626, and the FM board doesn't want to go stereo. The Muting switch sometimes works, sometimes cancels all strong signals and goes silent. The Stereo light flickers while tuning, sometimes indicates stereo on weaker stations, but often does not glow on...

Ok I read everything on here and I still need help doing the Bias and Voltage adjustment. I have all the test gear oscilloscope, signal generator and so on. Could someone Please give me step by step instructions on how to do set them up and adjust them. I did a recap and replaced some of the...

Hi. I've just finished overhauling an LX-626 receiver, and I was about to button it up after setting the bias on the AWH-002 (it's the same as in the SX-626). The actual process is described in detail here in AudioKarma (for example...

Hello to you! I hope I am not bothering you in any way but I need your help: I purchased an SX-626 (1971 MODEL) for 40$, it did not work but was incredibly clean. I figured I would recap it and also change transistors and power resistors. I did all the work and still have a few problems: 1...

I've seen several comments about "gold" or "bronze" colored Pioneer SX receivers from the "silver-face" era. I've collected quite a few SX-424, SX-525, SX-626, SX-727 and SX-636 units over the last six months (refurbishing them to compare to my HK 330B's and pick the one I like best, then sell...

I loaded Google Photos on my iPhone recently and it suggested I make an animation from all the step-by-step shots I took during the rebuild of a SX-626. It came out kinda cool, so I thought I'd share. (2017-03-29 edit: Changed the link to show the GIF)

I've just started restoring my first SX-626 and I'm carefully recording all the caps, transistors, etc. to compare against the service manual... and there are two loose wires, just hanging out in space, apparently intentionally. Why? These look like they came this way from the factory, they...