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sx-980

  1. 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
  2. C

    SX-980 Restoration

    I purchased an SX-980 online recently that needed some work. On first blush it was missing 4 of the toggle switch knobs, one of the lights was out, the phono indicator light was out, the power cord was frayed, and the sound in the left channel was weak. Cosmetically it is fair with the face...
    • ClasicTecGuy
    • Thread
    • pioneer sx-980 pioneer sx-980 restoration sx-980 sx-980 restoration
    • Replies: 25
    • Forum: Pioneer Audio
  3. Brivan

    AWE-092 & AWE-094 Swap?

    I have a Pioneer SX-1280 with a tuner board that was accidently crippled by me while working on the power supply board. I forgot to put an insulator between the power supply board (while it was pulled out for service) and protection board adjacent to it. The 13v regulator heat sink on the...
    • Brivan
    • Thread
    • awe-092 awe-094 sx-1080 sx-1080 tuner sx-1280 sx-1280 tuner sx-980 sx-980 tuner
    • Replies: 0
    • Forum: Pioneer Audio
  4. L

    Looking For Pioneer SX-980 Volume Pot ACV-162 or Substitute

    I am in need of a Pioneer SX-980 (or 1080, 1280, 1980, SA-7500 ii) volume pot ACV-162. Please let me know if you have one or know of a substitute I can use. I believe my pot is toast.
  5. R

    Pioneer SX-980, Circuit Protection Relay, Random Drop outs

    I'm hoping someone on here might be able to help. I have a Pioneer SX-980 receiver in pretty good shape. The receiver worked great until I discovered my speaker wires shorted together and it caused the Pioneer overload protection relay to kick in when turning on the receiver. I replaced the...
    • RobertSX980
    • Thread
    • clicking overload overload protection relay overload shutdown pioneer protection relay sansui sx-980 sx980
    • Replies: 13
    • Forum: Pioneer Audio
  6. mmsean

    Potential Purchase | Pioneer SX-980 vs SX-1250

    I have a couple of opportunities to purchase a couple of items and wanted to see y'alls thoughts. Although I wish I could get the screaming deals from yesteryear those times are few and far between apparently. I'd like to add that I'm a first time buyer so vintage stuff is new to me. I am...
  7. Brivan

    Pioneer SX-980 with Erratic DC Offset

    I've have a Pioneer SX-980 with erratic DC offset on both channels. I'm able to adjust it so it "centers" around 0v, but it will vary maybe 300mV in either direction. It seems to calm down a little after warm-up, but is still very unstable and might vary as much as 50mV in either direction...
    • Brivan
    • Thread
    • pioneer sx-980 pioneer sx-980 dc offset sx-980 sx-980 dc offset sx-980 erratic offset sx-980 offset unsteady sx-980 offset varying sx-980 unstable offset
    • Replies: 5
    • Forum: Pioneer Audio
  8. Brivan

    Pioneer SX-980 Output Transistor Replacement

    I recently acquired a Pioneer SX-980 that had a blown main fuse. It turned out the reason for this was two partially-shorted output transistors. One each of the 2SB706 and 2SD746 transistors were bad. I no longer recall where these were physically mounted, but I believe they were both on the...
    • Brivan
    • Thread
    • pioneer sx-980 sx-980 sx-980 2sb706 sx-980 2sd746 sx-980 mjl1302 sx-980 mjl3281 sx-980 output transistor
    • Replies: 10
    • Forum: Pioneer Audio
  9. Brivan

    Pioneer SX 980 with Uneven +65 & -65 Power Supply

    Hi, folks Well, I thought I had serviced enough of these things that I wouldn't get stuck on one, but here I am. I have a Pioneer SX-980 that originally was exhibiting symptoms of 13vdc supply problems - protection relay not engaging, weak function indicator lights. I found the supply voltage...
    • Brivan
    • Thread
    • pioneer sx-980 sx-980 sx-980 65v power supply sx-980 power supply
    • Replies: 8
    • Forum: Pioneer Audio
  10. M

    Transformer Diagnostic.

    Is this transformer went BAD, when the resistor value on the primary side (say 2.9ohm) lower or equal to the secondary sides (say 2.9 and 5.4ohm)? This is the transformer from a dead Pioneer SX-980.
  11. J

    Pioneer SX-980 problem - no relay click

    Hi, I have a Pioneer SX-980 in nice condition which have not been used for many years. When I started t up it worked for some hours but then the relay click was not there and no sound from the speakers. I have downloaded the service manual and read many threads on this forum how to trouble...
  12. gregmcm

    SX980 Stereo Decoder Chip Advice

    Need to replace the PA1001A Stereo Decoder chip in an SX980. As far as availability is concerned I have found a PA1001A on ebay from China and wonder if anyone has any experience with using this chip in place of the original. Here is the ebay link to the chip I could get...
  13. Classic Pioneer

    Classic Pioneer

    SX-980, SX-3000, SX-6000, SX-727. The Yamaha RX-730 controls all the Pioneer receivers. Gotta have the remote capabilities. HPM 100's modified. S-510. S-910 with rebuild woofers and ESS Model 10 Tweeters. Keeping an eye out for the originals
    • PioneerHPMLuver
    • Media item
    • pioneer hpm-100 pioneer s-510 pioneer s-910 sx-3000 sx-6000 sx-727 sx-980 yamaha rx-730
    • Comments: 1
    • Category: Member's System Pics
  14. S

    Vintage Pioneer repair shop in Alberta, Canada

    Can anybody suggest a good shop preferably closer to Edmonton but willing to drive to Calgary to go through my SX-980? Needs a couple of lights (no biggie) but I have also noticed the left channel has a lower output than the right and the speaker B outputs are also weaker than speaker A. All...
  15. matt gholson

    My Dead SX-980

    Started investigating the unit, its missing one knob, but otherwise seems pretty good on the outside. Insideobvious signs of meddling include new indicator bulbs that were spliced in and had electrical tape wrapped around the wires. Of course the most obvious thing I noticed was the main bulbs...
  16. SpaceBalls

    SX-980 Value?

    I have a Pioneer SX-980 that has been recently serviced. Everything is fully functioning, all lamps light up, etc. The receiver has negligible cosmetic damage, specifically a small nick in the wood cabinet and some little marks on the top of the metal faceplate. All of the faceplate lettering is...
  17. SpaceBalls

    TX-4500 MKII vs. Sx-980

    Alright, long story short, I've got both an Onkyo TX-4500 MKII, and a Pioneer SX-980. Both of them have just been completely gone through and are in amazing shape, but I can't keep both. Which one should I hold on to, and why?
  18. R

    Pioneer sx-980 First steps

    Hello, I am repairing a SX-980 for a friend. I have had it on my bench for two years and replaced the four main power transistors then (Q102,102). Now I have taken on the task again I have found a few other components fried on the power amp assembly ( R25,26 4.7 1W and Q6,Q7, R19 and VR1) on...
  19. Pioneer SX-980

    Pioneer SX-980

    • Retro Stereo
    • Media item
    • pioneer sx-980
    • Comments: 0
    • Category: Pioneer Gallery
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