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pioneer

  1. I

    McIntosh MA-6900 vs Pioneer SX-1080 for Vintage KEF 104/2

    Hey All, Curious on thoughts... and please let me know if appropriate for a different forum... Current state: I'm running a Pioneer SX-1080 w/a refurbished set of KEF 104/2s for my main system setup. The 2 sources I use are a Clearaudio Concept TT w/Virtuoso V2 cartridge and BlueSound Node...
  2. Sandpaper7

    Pioneer PL-25

    I've recently had a few technical issues with my Luxman PD375 turntable (which has been really great up to now). While I'm waiting to locate some parts to repair it, I picked up a reasonably cheap Pioneer PL-25. Wow. There's not much out there about this particular turntable from the 60s, but it...
    • Sandpaper7
    • Thread
    • pioneer pioneer sx-1080 turntable advice
    • Replies: 5
    • Forum: Turntables
  3. Mr_Mustrd

    SX-3900 Preventive Maintenance

    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...
  4. S

    Pioneer SX-650 Protection Relay Issue

    Hello everyone, I hope you can help me. A few days ago my beloved SX-650 suddenly stopped working during a listening session. I turned it off and on again and noticed that the clicking noise from the protection relay was missing, so I went to this forum and looked for answers. I got my...
    • sx650pio
    • Thread
    • pioneer pioneer sx-650 protection relay sx650 troubleshooting
    • Replies: 7
    • Forum: Pioneer Audio
  5. S

    Help choosing a receiver or integrated for my needs(Sansui or Pioneer)

    Hello, I am hoping someone can lead me in the right direction in choosing an amp or receiver I can love, use and cherish for life. I am searching for a piece I can use in a medium sized basement that has a lush and dynamic sound. I would likely be pairing it with a pair of Wharfedale Linton's or...
    • SSTPIERRE
    • Thread
    • 70's integrated amplifiers integrated amps pioneer receiver receivers sansui tube-like solid-state
    • Replies: 12
    • Forum: Solid State
  6. D

    Transistor replacement pioneer sx-3600

    I have a pioneer sx-3600 with a bad output transistor 2SD883A with the bat wings (xm20). I cant seem to find a replacement for it. I've checked with the local seller in my town and he couldent even find a suitable replacement and hes been doing it since the 70's. I've checked digikey & mouser...
  7. D

    Spec-2 Troubleshooting Output Transistors

    Looking for advice on determining if the output transistors are leading to a channel appearing to be out. What I've determined is that I have the correct voltage at 15,16,21,22, but do not see any voltage at the output legs of the transistors. I have taken each output transistor out and did a...
  8. powrviolence

    Novice PL-10 Troubleshooting

    Hello all, Apologies in advance if this is 1: not the appropriate place to post this and 2: these issues are commonplace and have been answered elsewhere. I got 1972 Pioneer PL10 and the audio quality is full of static and is of overall of poor quality. I am a complete beginner in the world of...
    • powrviolence
    • Thread
    • clueless fix grindcore help nerd novice pioneer pl10 powerviolence troubleshooting
    • Replies: 3
    • Forum: Turntables
  9. K

    Belts Pioneer CT-W701R , - CT-W550R ?

    HELLO TO ALL! ATTENTION! HELP! Please tell me what are the dimensions of 2 belts, they collapsed for me (for PIONEER CT-W701R and just for prevention PIONEER CT-W550R). Need actual size info. GOOD, PEACE AND HEALTH to everyone! * P.S. So far, I have...
    • konstantin62
    • Thread
    • belts ct-w550r ct-w701r pioneer
    • Replies: 0
    • Forum: Tape
  10. Dawid Ratal

    Differences between Pioneer HPM 1500 and HPM 150 speakers.

    Hi, I am looking for a person who had contact with the columns: 1. HPM 1500 2. HPM 150 I would like to ask having HPM 1500 (borrowed). What is the difference between these models? Do they really differ in real listening? Have any of you had the opportunity to listen to these speakers in the...
  11. jpreza

    Need help with Pioneer SX-750 power amp board

    Hey fellow Pioneer audio enthusiasts! I'm restoring a Pioneer SX-750 receiver. I'm currently working on the power amp board AWH-046. While pulling it out, I noticed that one of the connectors going to the heatsink from the D3 diode is snapped. Does anyone know if there is a replacement part...
  12. Dawid Ratal

    Pioneer SX 950 - does not turn on the right channel.

    Hello everyone, Have any of you encountered this problem before? Pioneer SX 950 receiver, serviced. All voltages on the power board are correct. Also the protection plate. No problems with ranges. Replaced the column switching relay with a new one (Mouser - Omron LY2F-DC24). All switches...
  13. S

    Pioneer SA 9100 (910) Help restoring

    Hi, so i have this pioneer sa 910 (The japanese version), and it needs a full restoration, and i dont know where to start, anyone help is appreciated. When i firts got it, it turn on but the protection light it stays on and the relay does not click, i recap and change all the transistors on the...
    • speks
    • Thread
    • pioneer recap and restoration sa9100
    • Replies: 2
    • Forum: Pioneer Audio
  14. wayoutwest

    Great Match for Pioneer SX-780?

    From what I've seen, this thread has been done many times, so apologies right out the gate to beat a dead horse with so much information already out there. I recently bought a serviced SX-780 and am really pleased with it. I've been looking for proper speakers to pair with it, as I feel it...
    • wayoutwest
    • Thread
    • 70's pioneer solid state sx 780
    • Replies: 7
    • Forum: Speakers
  15. HiFiRyan

    Pioneer SX-880 LED Indicators won't work

    Hi everyone!, new guy to the forum here. I recently picked up a SX-880 and have repaired it to the point that everything is working except the LED indicators. I eventually want to install a rebuild kit, but would like to fix this issue first. I've found that the LEDs have a good ground but...
  16. tusntuk2

    Pioneer SX-727 Blown Internal Fuse - what can I do?

    Hello AK, thanks for looking in. I'm having trouble identifying the cause for blowing an internal 3A fuse (# 2) in a Pioneer SX-727. I have reviewed other threads here and made some changes to my unit, but the fuse blew again while on the DBT, so I'm stuck, now. Can't measure voltages if it...
    • tusntuk2
    • Thread
    • fuse blow pioneer power supply protection circuit sx-727 trimmers zener diode
    • Replies: 31
    • Forum: Pioneer Audio
  17. Mr_Mustrd

    SX-1000td Balance Issue

    Good Evening from Ohio! Been working on restoring this beautiful receiver for some time now and I've replaced all caps and transistors except for the tuner boards, and the 4 main output transistors. The 4 big filter caps have been replaced, installed new 7 0.68 wirewound cement resistors on the...
  18. T

    pioneer ct-f4040 only plays on one channel?

    I bought this pioneer cassette deck recently and today I spent basically 4 hours having to rebuild the entire mechanism. Now I have it mostly working except for rewind which works but is kinda slow. Regardless it suddenly decided that it only wanted to output to the right channel even though it...
    • TrevorBarten
    • Thread
    • broken cassette deck channel cleaning ct-f4040 help pioneer repair
    • Replies: 0
    • Forum: Tape
  19. jpreza

    Replacing non-polarized AC plug Pioneer SX-650

    My Pioneer SX-650 power cord is pretty worn out and would like to replace it. I noticed that newer replacement AC power cords are polarized, meaning the prongs are of different size - smaller one (hot) and large one (neutral). My question is: when removing the old cord, does it matter how the...
  20. Kim Beneteau

    Hello Pioneer buffs

    Hi, new to AK and driven here by my desire to keep my Pioneer SX-950 in tip top shape. Have owned it since new (1976)! Looking to recap it and gain some additional knowledge on electronics. Also own a PL-530 turntable bought at the same time. Hopefully someone can point me in the right direction.
  21. cwh

    SA6500 subs=oscillation?

    Saving an SA6500 from the dumpster. Unit came with mix of replacement output TRs but rest untouched. Channels idle about 18mv/38mvdc and have 30mvdv and 50mvdc at the test points. Swapping in MJ15030/31s seemed up my power output to near spec (13vac/21w) and got channels >1/2 a volt in balance...
  22. Rubbertoe81

    Pioneer SA-1000 high bias issue

    I have an issue with my Pioneer sa 1000 where I am unable to adjust the right channel bias low enough. The manual calls for 100mv across the pair of emitter resistors for each channel, which seems quite high though I have read posts here where people suggest 50mv across the pair instead. I can...
  23. jpreza

    Pioneer SX-750 for $100?

    Hey guys, A local guy is offering a Pioneer SX-750 for $100. That said, it is not working, meaning (according to the seller) that it won't power on. He sent me pictures of the inside, it looks like it's in relatively good shape. That said, is it really worth it? Definitely the bonnet will...
  24. tusntuk2

    SX-727 Schematic changes for AWM-027 D Protection Board

    Holiday Greetings, AK'ers! My beloved Pioneer SX-727 blew an internal .5 fuse, so I checked it out. AK threads suggested the power supply or the protection circuit were common culprits. You might remember that the Protection Boards in the SX-727, and several other SX and SA series amps, are a...
    • tusntuk2
    • Thread
    • awm-027 awm-027d pioneer protection circuit sa-8100 sx-727
    • Replies: 0
    • Forum: Pioneer Audio
  25. lt.slothr0p

    Pioneer TT question

    I recently acquired a near mint Pioneer PL-51 from the original owner. Original box (shipping label even addressed to the guy I bought it from lol!) manual, etc. It's cherry and I am loving it. I am wondering, though, if anyone can educate me a little on Pioneer's shift from the 51 to the 51A...
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