• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

pioneer

  1. FireGuruMN

    Side Panel Screws for Pioneer SX receivers

    I recently purchased a SX-580 from shopgoodwill.com at an [almost] reasonable price. I've made other bad decisions in my life also. But this not the place for that discussion. It came with 6/32 screws holding on the side panels. Or better said NOT holding on the side panels. After...
  2. FireGuruMN

    Pioneer Spec Rack Build

    After years of scrounging around craigslist for values on Pioneer Spec equipment, I finally have enough bits to put together a proper looking rack. Only to learn that the Pioneer Spec racks (JA-R2S) are unobtainium. I pretty much saw that coming. So I developed a plan to make one out of...
  3. Ray66

    SX980 with PA3004 chip PCB substitute

    An SX980 that I’m restoring has a problem with the protection board where the relay does not energize. I believe the problem is with the PA3004 IC so went ahead and replaced the it with the ‘substitute PCB’ designed by merlynski and alexhastings (see PA3004 chip PCB substitute). A big thanks to...
    • Ray66
    • Thread
    • pa3004 pioneer protection protection circuit
    • Replies: 33
    • Forum: Pioneer Audio
  4. W

    SX-3800 repair

    I have checked every component on the power supply and audio output boards. Replaced numerous blown resistors, a few caps and the output transistors. If I run it without the output transistors connected, I hear the relay click and the DBT has a dim glow. When I connect the output transistors the...
    • Way San
    • Thread
    • output board output devices pioneer sx-3800
    • Replies: 15
    • Forum: Pioneer Audio
  5. potch

    Pioneer CT-F9191 Rewind Issue

    I have the above cassette deck. It will rewind fine until the tape gets to about half way (both sides of reel even with tape), then it stops. Any comments on what the issue could be and a solution for repair? Thanks in advance.
    • potch
    • Thread
    • cassette pioneer rewind problem
    • Replies: 4
    • Forum: Tape
  6. T

    Next logical upgrade?

    Hey guys, just wanted to get some opinions here, any input would be greatly appreciated. My current set up is a pioneer sx-535 receiver, pioneer cs-500g speakers, and technics sl-3200. Where should I go from here for the biggest jump to upgrade sound? I feel like the synergy in my set up is...
  7. G

    AVH-W4500NEX incompatibility with CarPlay

    I am posting this here in hopes that someone will find this, and either report it to Pioneer or find this on Bing and know the solution. I dumped the firmware for both AVH-W4500NEX and AVH-W4400NEX and discovered there's an incompatibility between the new Bluetooth firmware in the iPhone 13 Pro...
  8. P

    Pioneer SA-7800 Recap Question

    I just picked up a Pioneer SA-7800 to restore as a summer project. The phono section is having some issues. But, I am learning that this seems to be a common issue and I am lucky there is a lot of information out there to help guide me when fixing this. The main reason for my post is a question...
  9. Mrcoolest123

    PIoneer Tuning Fork Load Box Help!

    Hello guys! Sorry to bother again, but this time I am really confused about an electronic system. I have learned a lot about basic electronic components reading the pioneer tuning fork series, and by reacherching basic electronic theory online, but I cannot seem to solve this problem. On...
  10. Tubeglowpio

    Pioneer sx 828 tant caps

    Going through a sx 828 right now and wondering if changing those tant caps will lose some of the magic this amp has. I feel like they had room for e-caps on the tone board so wondering why they chose the tant caps, I could fit some film caps but wonder if I should leave those alone. I know they...
  11. nickhead

    SX-315 and M61540FP chip

    I don't want to debate whether or not this receiver is worth fixing. I know it's a POS. I'm doing it for the challenge. Does anyone have experience with this receiver or the M61540FP chip? I send in a 1kH 1V signal, and I get a 1kH 600mV signal out of the DSP board. So the receiver does...
  12. P

    Platter Rubbing - Pioneer PL-514

    Hi, This one is baffling me a bit so I thought I'd ask the experts... I have a Pioneer PL-514 which I acquired recently. The platter is rubbing on the black metal plate directly underneath. After a bit of investigation i came to the conclusion that I must have faulty main bearing spindle or...
  13. K

    Marantz 1060 vs Pioneer SA 9900

    Hi, I’m considering buying one of these two amps to power a set of Klipsch Fortes. Would love to hear any opinions on the two that anyone cares to share. I’m mostly interested in how their sounds differ from one another, so long as the Marantz is powerful enough for the Fortes. I will mostly...
  14. JB8

    PIONEER SX-440 Output Transistor Replacement?

    Hey all, I'll make this quick. Spent some time trying to sift through a bunch of threads to find this info but came up empty, so I'm putting up my white flag! What's a good replacement option for the 2SD226A? I'm getting some distortion at the speakers (mainly right side) but not through...
    • JB8
    • Thread
    • distortion output transistors pioneer sx-440
    • Replies: 83
    • Forum: Pioneer Audio
  15. M

    Jumping right in! Hello (from Atlanta) and quick question

    Stumbled on AK via Reddit and have been lurking for a few weeks. I decided to jump right in on the vintage audio equipment and made a “deal” at an estate sale this weekend. After a lot of mold clean up and deoxit, it all works! I’m already loving everything - including the mistakes I’m making...
  16. JGR

    Pioneer CS-J835 speaker.

    Hello all, I picked up a pair of Pioneer CS-J835 speakers for my sons basement games room. The tweeters, as shown in the attachment, are non functioning. Anyone else own these? Is there anyone out there that can tell me or measure the ohm rating for the tweeters so I can order a close fit. Thank...
    • JGR
    • Thread
    • csj838 pioneer speaker tweeter
    • Replies: 0
    • Forum: Speakers
  17. sean sweeney

    2sc1451 sub for Pioneer (Can I use 2SC3467C ?)

    I have a receiver, SA-9100, and am a local tech of many different things here in STL... I have a pack of 2SC3467C transistors and was thinking they look like they could replace the 2SC1451's.... because they are obviously noisy and triggering the protect... I just got the amp in here and...
  18. SAEAl

    Hello from the People's Republic of Michigan

    Occasional lurker here, but have been into audio for about 50 years now. Noob speaker builder with a learning curve, while also appreciating vintage 70s and 80s audio gear. Looking to bringing some new life into some of my vintage gear, while sharing what I can with the community. Cheers!
  19. Anonky

    Pioneer sx2500 with intermittent problems HELP!

    Hi all, Have a pioneer sx2500 on fantastic cosmetic condition that plays wonderfully when working properly. However, it has intermittent problems with both channels on all inputs. I figure that since it’s on all channels problem likely lies in the main amp unit or protection unit (AWM-004 in my...
  20. X

    Pioneer SX-1250 Relay buzz then engages - Restoration.

    In the process of restoring an SX-1250. The unit powers on and the relay buzzes within a second then engages. I unscrewed the bottom panel and found 3 out of the 4 main filter caps have vented and are blown / leaking gew. Are the main filter caps causing the issue to the relay buzzing then...
    • xalara76
    • Thread
    • filtercaps pioneer relaybuzz stereoreceiver sx-1250 sx-1250 restoration
    • Replies: 3
    • Forum: Solid State
  21. Timothy Flath

    Pioneer SX-650 Restoration Project

    A while back my lovely wife found a nice little toy at a local thrift shop so I got her to bring it home (love that she gives me a call when she sees something nice). Was really needing a nice little project to keep me occupied with Omicron raging out there these days. Ordered a Deluxe...
  22. Anonky

    Pioneer QX-949 left channel noise

    Hi all, I have a qx-949 that plays music on both channels on all inputs; however, the left channel has persistent static noise. This occurs on all inputs. For what it may be worth, dc offset in right channel is rock solid at 2.5mV. Left channel was like 60mV. Considering this problem and...
    • Anonky
    • Thread
    • pioneer qx949 repair troubleshooting
    • Replies: 5
    • Forum: Pioneer Audio
  23. redondo2018

    R2R repair folks in Portland, OR metro area?

    Hi, not sure if this is the correct place to ask this, but does anyone know of techs in the Portland, OR area that work on reel to reel (or better yet, are members here!). I have two very clean but non-serviced R2Rs - AKAI and a Pioneer - that I need looked at. The likely need relatively small...
  24. E

    New guy here. Been rocking with Pioneer since the 70's. Found this forum about a week ago & love it.

    Hi guys. New here . I have been rockin with Pioneer since the 70's. I found this forum about a week ago & love it.
  25. Carguy1394

    Pioneer A9 repair in 2022 appreciatte any advise help

    Hello everyone in this forum. I will be grateful for any advice and help that someone gives me because I have not repaired any amplifier so far. This is another renovation of Pioneer A9. It differs from all the repairs described so far in that most of the transistors recommended here for...
Back
Top Bottom