sx-3900

I'm in the middle of rebuilding this receiver and would like to replace the filter caps so I don't have to tear it apart again to replace them in the future. Would there be any value in increasing the filter caps capacitance like the one linked below to get a larger cap? It seems to be longer...

Good Morning! I’ve scored my first receiver that is over 100wpc! Pretty sure this receiver was sitting in storage for some time considering the thick layer of dust that covered it, seller stated that it did work, and he was the original owner he also had the manual! After blowing it out with...

Hey, so I restored an SX-3900 a while back, new parts throughout, and it worked well for around 5 months, had the FM tuner pulling in stations strong, everything working great. Now, all of a sudden there's no FM sensitivity, I notice when off station it quite consistently shows two bars on the...

Hello, I have a Pioneer SX-3800 that I am restoring. It was DOA and was a victim from a cracked transistor socket. I first replaced the sockets with phoenix connectors. I then replaced all the caps and transistors on the power supply board and replaced 3 resistors and 1 transistor that...

Everyone is familiar with the Pioneer SX-1980 beastly stereo receiver. I get what’s special about it to a very limited extend: the insane 270 wpc, the 3 speaker channels, the heft and size, and the beauty of all analog. However, why doesn’t it’s successor, the SX-3900 get nearly as much love (I...

Hello, I'm new to the site but not new to Pioneer Audio. I've been working on consumer audio equipment since the early 80's. My favorite Pioneer SX-3900 is on the fritz and I need help with obtaining parts for this component. The power supply has a blown temperature fuse and I can't seem to...

Hi Everyone, Just wanted to start a thread to let folks know how this is going. I've received a lot of help and good advice from people, so I thought it would be right to share my experience. A brief history... I grew up in the 80's and my neighbor and good friend purchased an SX-3800. We...

I picked up an SX-V80 this week having clocked the magic words "Non-Switching-Amplifier" on the front. After a lot of dusting, its working pretty well apart from a bit of a DC offset drift on the left channel and some slightly jumpy trimmers that will soon be replaced.... the amp looks to be a...

I have a pioneer sx-3900 and it seems to be working great - i opened it up to give it a look through and found on the bottom side connected to the heat sink most, if not all, of the white silicon output transistor heads were cracking. Is there a way to fix this??? The rest of the unit is in...