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repair

  1. Anonky

    Pioneer sx950 powers up but no relay click

    The unit powers on with DBT. DBT has initial bright light then it dims significantly and barely is lit up thereafter. Powers on fine without DBT as well, but no relay click under either condition. Power supply voltages at pin 1-15 without the DBT: 1: 0v 2: 5.2v 3: 5.2v 4: 13.3v 5: 13.3v 6...
  2. T

    Dual 606 tracking force adjustment issue.

    I have a dual 606 turntable that has an issue with the tracking force adjustment where it only increases by like 0.4 grams even when going from 0-3. I assume this is an issue with the spring but I have never had one of these tonearms apart so I don't know how the mechanism works. Is this...
  3. HerbyG

    Superscope by Marantz R-1250

    Hi all, First post here. I'm having difficulty finding anything online about this receiver, so am hoping to pick some brains... I have the R-1250 hooked up to a Dual 604 turntable, a Technics SL-PD687 CD player, a Fisher CR-W9005 cassette player and Lloyd's WO86 speakers. I was having an issue...
  4. AsciiRory

    DDA QII MIXER OUTPUT ISSUE

    Hello all. I have a beautiful DDA QII mixing console that has one issue. When listening to anything through the board the left channel tends to cut in and out sporadically. It happens quite often and doesn't seem to matter what input channel or source so I suspect an issue with tbe master...
  5. Tyler Prock

    Pioneer PD-M801 trouble shooting

    Got it today plugged it in and it stops at different times on each cd and one cd, no matter how many times you tried, would get stuck in a loop. None of them getting past a minute. If anyone has any advice it would be helpful!
    • Tyler Prock
    • Thread
    • cd changer cd compact disc help pioneer repair trouble shooting
    • Replies: 0
    • Forum: Pioneer Audio
  6. T

    Can I replace stk 0040 II with stk 0040?

    I am working on an akai am uo3 amplifier and I need to replace the stk 0040 ii power amplifier ics but I can only find stk 0040. Are these fine to interchange?
  7. Anonky

    Blown fuse and smokin’ resistor on Technics SA5170

    Hello all. Have a technics SA5170 that blows fuse on power up according to its previous owner (the single fuse on the power supply and amp board). After inspection I identified a few potential problem caps and went ahead and empirically replaced them. Also noted a slightly discolored resistor...
  8. Bradley J

    Pioneer SX-1050 Output Transistor Help

    Hi everyone, about 6 months ago I had 4 speakers hooked up to my 1050 and I made the great mistake of dropping the needle too hard on one of my Zeppelin records. The pop was quite loud and it killed my 1050 as well. It only popped the main 10A fuse on the rear and nothing else. No smoking or any...
  9. P

    Small Tear in Magnepan 1.7i

    Hello all, I recently purchased a pair of Magnepan 1.7i speakers. They sound fantastic and so far I am happy with my purchase. However, I discovered what appears to be two sections of the foil/wire slightly lifted and rotated with small tears in the mylar. The tears do not seem to change the...
    • proto85
    • Thread
    • magnepan magnepan 1.7i magnepan damage repair
    • Replies: 4
    • Forum: Speakers
  10. whbuddin

    Marantz MA 500U service conundrum

    OK, here’s my problem: I have six Marantz MA 500u monoblocks. I won these on eBay a few weeks ago, and were attested by a reputable seller to all be perfectly functional. In any case, they showed up in less-than-functional shape, likely due to poor packaging (he packed all six into a single, old...
  11. T

    Dual hs 36 Ceramic cartridge pre amp for MM carts?

    Not too sure if this is the correct board to ask this but I was servicing a hs 36 and I wanted to replace the original ceramic cartridge with a MM cartridge until I realised that the pre amplifier is only built for ceramic cartridges. Is there any easy way to modify the internal circuit of the...
    • TrevorBarten
    • Thread
    • dual modification phono pre amplifier repair service
    • Replies: 3
    • Forum: Solid State
  12. G

    Denon AVR-X1200W repair help

    Hello all, I am trying to repair my said AVR after it started going into protection blinky red. Have some knowledge of electronics (college courses in the 90s :)) and do solder here and there. Service manual for this AVR is here. So far, successfully replaced 7912 voltage regulator in the...
    • Gl-dunk-27
    • Thread
    • demon question relay repair troubleshoot
    • Replies: 24
    • Forum: DIY
  13. T

    Denon dp-40f service manual help needed.

    So I just did a full recap om this denon turntable I had laying around but I have no clue what how I am supposed to re calibrate it. I am trying to figure out what the service manual wants me to measure but the point I think it is talking about doesn't react to adjusting the potentiometer at...
  14. dannysan

    Local repair Seattle

    Hello, I’ve been lurking around here for a couple years. Since I have no expertise I haven’t posted much but I am always blown away by the knowledge and the open handed advice and encouragement here. I have a Pioneer SX 1250 I bought a couple years ago. It makes my ads 1090’s and 810’s sing! Now...
  15. T

    Kenwood kd -990 solenoid defective?

    I recently bought a kd 990 second hand for a pretty good deal however the arm cueing isn't working. I did some testing and I am pretty sure that the solanoid is defective. It measures 0.6 M ohms and doesn't do anything at all. Is there any chance of finding a fitting replacement? Also the auto...
  16. VanishCave

    Finally got my hands on a 4 track cart player! (It has some issues)

    Today I was excited to pick up my first 4 track cart player: a Muntz H5500 “12 track” player. I can hardly find any reference to this model online at all. It appears to be the guts of a regular automobile 4 track player along with a 12v power supply and speakers housed in a handsome...
    • VanishCave
    • Thread
    • 4 track cartridge question repair
    • Replies: 29
    • Forum: Tape
  17. C

    Teac A-3440 Repair - No Record or Pause

    Hi folks, hoping I might be able to find some advice. Received today what should be my ideal tape machine, a teac a-3440. I got a very good deal on it thanks to it only being partly tested. Unfortunately it received a couple of solid bashes on it's way to me, as well as possibly having one or...
    • Cont3mplate
    • Thread
    • damage damaged record reel repair teac teac 3440
    • Replies: 0
    • Forum: Tape
  18. A

    Electronics Repair Liabilities

    Hi all. Have a technical & etiquette situation I could use the forum's perspective on. What happened: Wharfedale Linton 85's right tweeter was blown by my recently repaired power amp (Nakamichi PA-7A II for the curious). The amp was repaired for the exact problem that blew up my tweeter: Two...
  19. Anonky

    sx-650 relay not clicking

    Hello friends. I just obtained a pioneer sx650 as a repair unit. Was told a "resistor fuse blew." As soon as I got it home, I powered it on (no DBT--shame shame, I might make one soon). All lamps work. Relay clicked. The sound was sizzling a bit but cleared up quickly. Played fine for ~5 mins...
  20. 201bk

    Yamaha NS-670 woofer repair help needed

    Hi, Long story short I got scamed by seller. And now he won't admit that he has hidden this issue. He says that I have damaged the woofer. I was doing 10wpc tops and it's first time I've heard that you can damage woofer by decentralising it with proper usage. Everything looks fine with this...
    • 201bk
    • Thread
    • help issue ns-670 repair woofer yamaha
    • Replies: 34
    • Forum: Yamaha
  21. razpones

    Sony RCD-W1, repairing the A disc drive (no play)

    Hi all, I have posted here a few times always to ask about some issue on a repair I am working on. But this time am writing to help someone that might run into the same issue. As am certain that this is a problem that happens to all this units. The Sony RCD-W1 has two trays, one is a CD player...
  22. M

    AKAI 1015 Receiver loud crack(le/pop) on power on

    Ls, My mom's Receiver makes a loud bang when turning power knob from off to speakers A. It scares her so much (she's 88) that she doesn't turn it on anymore which saddens me deeply. Type: AKAI 1050 Receiver I've got an old scope and multimeter trying to teach myself electronics and at the...
    • MacShrike
    • Thread
    • akai 1015 receiver repair troubleshooting
    • Replies: 47
    • Forum: Solid State
  23. PioneerPoet

    [Help] LXI Series All-in-One

    My friend recently dropped off this unit from his basement that’s been collecting dust. I got it cleaned and spinning well, but I have two problems. I don’t know how to operate this counter balance I don’t know what stylus I need to replace the one in the pictures
    • PioneerPoet
    • Thread
    • counter weight help lxi repair sears stylus turntable turntable advice
    • Replies: 2
    • Forum: Turntables
  24. SingleReel

    Luxman L-100 woes

    I have owned this Luxman L-100U for about two years now and it seems this unit has been nothing but constant trouble. I know it was serviced before I purchased it and it immediately had problems. I decided to have it serviced by a long time professional and he claimed the last Tech did him no...
  25. OskarBas1

    broken woofer spider, wharfedale E70

    I receny bought a pair of wharfedale E70 speakers. And they really sound great. But today when o had a listen one of the woofers started to make a weird noice. I stopped playing soon after and unscrewed the woofer to find that the spider had come completely lose from the basket. If i hold the...
    • OskarBas1
    • Thread
    • repair speaker wharfedale wharfedale e70
    • Replies: 3
    • Forum: Speakers
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