• 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. jpreza

    Dad's old "new" Pioneer SX-535 power amp board noisy transistors?

    Good afternoon everyone! I'm visiting dad in Florida for the next week. While I'm down here, I decided to service his dear old Pioneer SX-535. It was making the old "popcorn" sound no matter what output was selected. I looked at the power amp board and saw the dreaded 2SA726s (Q1 through...
  2. LennonsGhost

    Questions about Pioneer CS-99a

    Hello, I just joined AK to ask about these speakers but this site is pretty rad so Ill probably be a here a bunch. Anyways, I picked up a pair of pioneer cs99a for free from marketplace. Ide never heard of them before but will snag any free audio device especially if they're vintage. I took them...
  3. VanishCave

    Pioneer CT-F4242 producing very loud 14kHz tone through speakers

    Hi everyone. I just picked up a Pioneer CT-F4242 cassette deck from Facebook marketplace for a great price. It’s in very good physical condition and the belts were in sufficient shape for me to give it a cursory test. To my delight, everything seems to be working. Play, pause, FF and RW...
    • VanishCave
    • Thread
    • cassette dolby pioneer
    • Replies: 6
    • Forum: Tape
  4. J

    Pioneer RT707 Problems

    Hi All, Recently acquired a pioneer RT707 tape recorder. I’m having a weird problem with it where the player won’t sound out of both channels unless i press lightly on the supply reel. I feel like it is tension related as as soon as i add tension this problem disappears. Anyone point me in the...
  5. S

    Pioneer SX-580 No Audio with power right power meter on max

    Hello, I have a pioneer SX-580 that has been working for years. Recently the speakers stopped working and it seems that only the left A channel works. The two 4A fuses were blown and when replaced the watt meters jumped around and the right one stayed just over half way. The power ICs were...
  6. Bob123456

    Pioneer SA-8800 - high voltage readings

    Hello, newbie here hoping for some advice. I was recently given an SA-8800 in not-great-condition to refurb and sell on behalf of an elderly relative. I've got a little experience with electrical repairs and I guess I've had some luck in the past, but I have limited equipment (and space) to work...
  7. C

    Pioneer sx440 parts

    I have an sx440 and I pushed it a little too much thru my Polk 5jrs and now the right side on both A and B speakers are making noise. In the pic I'm sending the part that one side was completely off is shown.I see there are 4 of these.Could this be problem? I took other connection...
  8. C

    Trouble with SX440

    So,I picked up my 440 a couple months ago.Before turning power on I disassembled everything I could inside and out,refinished wood case,deoxite every knobs and switch,faceplate.....everything. Worked great for a couple months running Polk Series 2 5jrs. Then I made a mistake by...
  9. motleypixel

    98% sure this Cart/Stylus will fit my Pioneer PL-7 head-shell...

    Hi folks, first timer here. I now have dad's old Pioneer PL-7 and it works great, but I feel it needs a new cart/stylus. I'll attach a short video clip below. This is what I know: - I don't know the brand/model cart/stylus currently on it. - I do know from personal correspondence that the...
  10. C

    Pioneer sx440 balance

    So,I have this Pioneer sx440 and the balance seems a little off (not as loud ) as the other.Im playing the songs I know so I can tell.Seems to be alit of room in there(12 watts) so I figure I can maybe do the job myself. What caps or other would I be looking at. Maybe it's more major but I'm...
  11. Jackwebb1965

    SX-1250 Intermittent loss of signal

    So my old SX-1250 works, but every so often the left side just cuts out tap the top of the volume knob and it comes back. after awhile the right side will crackle for a couple of seconds then settle down, and work fine. if you adjust the volume knob it crackles on both sides and the left cuts...
  12. Z

    Pioneer SX-980 DC Offset fluctuation

    Hello! Been a long time lurker on here but finally encountered a problem I cannot seem to fix! Lets start at the basics: When I first bought this amp one channel was out. Fixed the channel but noticed that the DC Offset would not stabilize but the Idle current for both channels is a steady...
    • Ziconceo
    • Thread
    • cracking popping crackles dc adjustment dc offest pioneer problem problems rebuild sx 980 sx-980
    • Replies: 4
    • Forum: Solid State
  13. D

    Pioneer SA-508 or NAD 3020 paired with NAD 4020b

    Hello peoples, currently I own a Pioneer SA-508 at my home office. My mother is getting rid of het NAD setup. 3020 amp en 4020b tuner. Now I wonder, what would be the better setup. Pioneer with NAD tuner or the NAD amp with the NAD tuner. They will be paired with Hans Baan HB-5 speakers. Those...
  14. daveyh

    Pioneer SX-450 aux not working- FIXED

    FM and AM work fine. Nothing from the aux input. Any ideas? After 20 years my CD player finally bit the dust! Tried another one and it is fine. :thumbsup:
  15. J

    SX-D7000 Replacement Buttons

    Hey All, I recently acquired a very clean (No banged up aluminum faceplate) and fully operational SX-D7000. The only thing it needs is a pot cleaning and the replacement of two missing buttons on the tuner. Can anyone recommend a source of 2 plastic rectangular buttons for the tuner section...
  16. J

    SX-1250 Bass & Treble Control Switches Question.

    The 50Hz Bass control switch (ACV-165) shaft is broken on my SX-1250. I'm am having trouble finding another one, but have found a 20Hz Treble control switch (ACV-168). My question is can these be substituted for one another? It appears the pin spacing is the same, they are both 102K, both are...
    • Jada95
    • Thread
    • acv-165 acv-168 bass control control switches pioneer sx-1050 sx-1080 sx-1250 sx-1280 sx1980
    • Replies: 3
    • Forum: Pioneer Audio
  17. Kim Beneteau

    Good source for RT-707 Pinch roller

    Anyone have any suggestions on where to get a replacement pinch roller Right Hand on an RT-707? Wasn't particularly looking for just the rubber portion unless someone has had a positive experience with replacing them. But I'm open to the idea. Otherwise, the complete roller is what I'm looking for.
  18. S

    Sansui Eight Bass

    I recently acquired an excellent condition Sansui Eight and was very excited to fire it up once I finally found a power cord after hearing all the rave about how great this receiver is. To my disappointment I was shocked when I fired it up and it simply paled in comparison to my Sansui 2000x and...
    • SSTPIERRE
    • Thread
    • bass classic receivers marantz onkyo pioneer restoration restore sansui sansui eight yamaha
    • Replies: 6
    • Forum: Solid State
  19. Swaler61

    Pioneer CS-801 Restore

    Hey all, Found a pair these at a local Savers (similar to a Goodwill) a week or so ago, and have been working on getting them back into shape. I've really enjoyed working on them! As far as the drivers, only one was fried, one of the horn tweeters. I rewound it myself, first time for that...
    • Swaler61
    • Thread
    • cs-801 cs-801a pioneer
    • Replies: 13
    • Forum: Speakers
  20. badwithnames

    Another Identifying Transistor Help Thread

    Hello all, I'll be doing a few restorations (SX-950, SX-880, SA-8800) in the near future and have been doing a lot of learning here on the AK forums. I've got a decent parts list going for all my projects but am having issues when it comes to what exactly I need to be replacing for...
  21. 6

    SX-636 - Restoration Help

    Hi everybody! I am in the middle of restoring a Pioneer SX-636 receiver. When I got it, there were multiple blown fuses in the power supply, a dead channel, and very faint sound out of the working channel. Thanks to reading through tons of old threads here at Audiokarma, I was able to get her...
  22. SX-636

    SX-636

    My Pioneer SX-636, mid-restoration. March 2023.
    • 68krazy
    • Media item
    • pioneer sx-636
    • Comments: 0
    • Category: Member's Component
  23. D

    PD-570 CD Unit help

    Hello, I have been trying to find a PDF of a service manual for the PD-570 for a while and have not been able to. I'm trying to fix my mother in law's stereo and her CD unit, the PD-570, will eject the CD tray. Hoping this is an easy fix. Any help would be appriciated. Thank you
  24. Young46

    Pioneer SX-780 Problems Need Help Please

    Hello all, a friend of mine dropped off a SX-780 that was in protection and ask if I could fix it for him. Having repaired/restored I think 3 of these before, I agreed. I powered up with the DBT and sure enough it had all the signs of a blown STK0050 module. I had a good spare and installed it...
  25. jpreza

    Pioneer SX-750 Power Amp - Need Help

    Good day everyone, Currently troubleshooting an issue on a Pioneer SX-750 Power Amp board. Recapped it and replaced the following transistors: Q3, Q4, Q5, Q6, Q7, and Q8. Left the original 2SA798s (Q1 and Q2) alone as they tested good. After making sure that everything was plugged in...
Back
Top Bottom