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repair

  1. Frank Wild

    VU meter problem BIC T-1 deck

    Even with the power off, the right needle stays on -7 db. With a tape playing, it's too high,usually over 0 db. The needle isn't stuck: I can move it back to the far left manually, but it returns to -7 when released. Repairable?
    • Frank Wild
    • Thread
    • cassette diy meter repair
    • Replies: 2
    • Forum: Tape
  2. J

    PSB Subsonic 6 issue

    So a few years back I had to change my PSB sub transformer as I moved from the US to Ireland. I replaced the transformer with a toroidal one and all was working perfectly for a few years. A few days ago I have very little output next to zero... When I put the volume up, a rapid noise occurs, and...
    • jvoid22
    • Thread
    • amp repair psb repair subwoofer
    • Replies: 0
    • Forum: DIY
  3. M

    ADC Sound Shaper Two Voltage Output Or Service Manual

    Hello everyone. I am looking for the power output readings of the Sound Shaper Two. Not the MKII. I can find no information or crossreference on this transformer.This is a P-100686 with a 3 wire output. 1 black, 1 brown and 1 grey. I also can't locate a service manual This would solve all of my...
  4. L

    Replacement dust cap B&W CDM 7NT / 704

    Hello all, Lately I have been busy repairing some CDM 7NT's by B&W. First I replaced tweeters repaired the grills and so on. I am now at the last stage where I am replacing the dust caps, since one was cracked. The problem which now occurs is the following. Practicaly minded as I am I already...
    • LarsGkz
    • Thread
    • bowers & wilkins repair speaker repair
    • Replies: 1
    • Forum: DIY
  5. J

    RTR HPR-12 (Non/Pre magnum

    Hi all, I just picked up this pair of RTR HPR-12 and have a few questions. I bought these knowing they would need some work, its something I have wanted to try for a while now and am hoping you will be able to give me some guidance. I have a few questions to start 1. This is a simple one but...
    • jonoo
    • Thread
    • #technical support repair
    • Replies: 1
    • Forum: Speakers
  6. T

    wega v-4810 (sony ta-5650 v-fet) right channel lower volume and missing low frequencies dead v-fets? (problem isolated to the power amp section)

    I bought a v-4810 for not a lot of money and I wanted to keep it for myself, however the right channel is not working correctly. I did some testing and sadly the issue lies in the power amp section. Could someone tell me if there is a way to know whether this is caused by defective v-fets or...
  7. W

    Beomaster 3000-2 full distortion from right channel

    I have a full distortion from right channel. From the voltage and signal trace I did I discovered that there is no output voltage and signal from 496 diode.I changed the diode but still nothing I swapped the transistors tr45 46 47 50 from the other channel but still nothing. I swapped the...
    • wumpi
    • Thread
    • bang and olufsen beomaster distortion repair vintage amplifier
    • Replies: 0
    • Forum: Solid State
  8. R

    Denon DP-40F power supply problem

    Hello everyone! Sorry for starting the first post from a problem. Just got Denon DP-40F in very good conditions - without scratches, broken off pieces of wood cabinet, and so - which is very rare on the marker, bur somehow it does not power on. The symptom is a bit strange: when press the...
  9. Virus

    An electric clicky sound, Nakamichi CD player won't turn on

    I've just done a classic repair of replacing the belts on my Nakamichi MB-3 and everything works but a new problem arose. When I power it on, the relay sends electric surges in an attempt to start the CD player to no avail (you can see the electricity between the board and film that's zip-tied...
    • Virus
    • Thread
    • cd player fix help issue nakamiachi power repair
    • Replies: 0
    • Forum: Digital Sources
  10. I

    Heathkit AR-29 Help: Low Volume on Right Speaker Channels

    Hello, I have a Heathkit AR-29 and very little knowledge of what I'm doing. I am seeking help to diagnose why my right speaker channels (outputs 1 & 2) are outputting at a much lower volume than my left speaker. I am not experienced in restoring or repairing vintage audio equipment but I have...
    • ImBatman
    • Thread
    • ar-29 diagnosing speaker issues heathkit help me please repair
    • Replies: 30
    • Forum: Solid State
  11. A

    Audio Desk Systeme record cleaners and how they can ruin your records.

    For the last 2 years i have been using an Audio Desk Systeme Vinyl cleaner, the "Vinyl CLeaner Pro X" Since about 6 months, i found that the records cleaned in this machine often had loud pops after washing, especially on the outer tracks. Sometimes i could see tiny shiny particles on the...
    • Arjen CNX
    • Thread
    • audio desk systeme designed to fail repair vinyl cleaner pro x
    • Replies: 56
    • Forum: Turntables
  12. O

    Rewiring An Astatic G Stand With A 3 Pin Connector

    I have an 3 pin Astatic G stand that I wish to add a 3 pin female connector to the end of the cord. The cord has two white wire conductors with shield. Which wires do I solder to pins 1 - 2 - 3 on the connector shown? White wire with orange terminal dot to pin number ? White plain wire to...
    • ookpik
    • Thread
    • 3 pin astatic connector connectore wire color microphone repair wiring wiring help
    • Replies: 3
    • Forum: General Audio Discussion
  13. S

    Only one channel working

    Model is a toshiba pc x10 bought it used on marketplace for very cheap, everything works except playback only work on the left channel, right channel is pretty much dead. ive opened up the deck, tested all the connections, ive removed the record switch and cleaned it and nothing its a really...
    • sebber
    • Thread
    • cassette deck cassette repair repair vintage
    • Replies: 2
    • Forum: Tape
  14. T

    sony cdp-303es headphone volume adjustment question.

    I recently bought a cdp-303 es cd player and after testing I noticed that one of the channels didn't work via headphones. After prodding around a bit I noticed the issue was with the potmeter which in hindsight makes a lot of sense as the knob was damaged already so it most likely had some sort...
  15. A

    QSC PLX1202 Help

    hey guys.. Recently bought a QSC PLX 1202 Power amplifier off ebay, faulty, To repair.. My fault finding has led me to believe the small transformer has blown, and gone open circuit.. Labelled T1 on schematics... Service manual says that when U16 TOP210 chip is removed, there should be 15 ohms...
    • AyEss
    • Thread
    • 1202 plx qsc repair u16
    • Replies: 18
    • Forum: DIY
  16. Pbknowall

    Audible interference on Sony CMT-EX1

    Acquired a CMT-EX1 a few weeks ago, but quickly realised there is audible interference from the speakers, in one channel more than the other. Have opened it up, and I’m getting interference right back to the outputs on the amp chip. However, the digital-sounding interference is **independent**...
    • Pbknowall
    • Thread
    • cdplayer repair sony
    • Replies: 0
    • Forum: DIY
  17. A

    QSC PLX-1202 Power Amp

    Hey everyone.. I am no electronics expert, But i like to collect Pro Audio gear, Just for the fun of having a powerful system, At home :D I have been quite successful in my previous projects.... My first project was a Peavey CS-1000 amp that i bought for cheap, Blown up.... Repaired that and...
  18. T

    yamaha rx-500 receiver no sound?

    I have a yamaha rx-500 receiver that does not work. Initially the relay didn't click in, I noticed there was quite a bit of corrosion around the filter caps and transistors so I took all those off, cleaned the area, restored some of the connections and tested for shorts on the transistors. All...
  19. B

    Logitech Speakers with torn surround

    Hello I bought some logitech speakers (Z533) for really cheap with one of the smaller (midrange I believe?) speakers having a small tear in the surround. It sound good to me even at max volume. I was looking at speaker repairs and I wondered if I should try to repair it or buy just the speaker...
    • bobi
    • Thread
    • damaged surround logitech repair repair help speakers torn surround
    • Replies: 8
    • Forum: Speakers
  20. Reyhifi

    Well this is going to be fun

    A friend tells me, I know you like to work on stereos. I have one that is not working, do you want to look at it. I said sure, is a basic receiver and he is a client as well. Has own it, for over 30 years. The plan is to get going and into his office. Who can I'd it, from the photos. So far no...
  21. T

    pioneer pl-88f tonearm not moving?

    I have this drawer style pioneer record player which I cleaned and replaced the belts on. The drawer opens just fine and the if I press the manual switch the platter starts spinning for a bit. However, the tonearm does not move at all. I checked and the motor does not spin. The belt is a bit...
  22. M

    Lost oomph after recap Marantz 1060

    Hey, I've just had a Marantz 1060 recapped, obviously I expect a slight sound change when that's done, but I don't think I was ready for just how much bass I seem to have lost. An old hiss is now gone, and the mid and highs seem a lot clearer, but I've also lost the tight punch and low end...
    • Madmurphy13
    • Thread
    • bass low distortion marantz + 1060 recap recap help repair
    • Replies: 14
    • Forum: Solid State
  23. asbesto

    Kenwood KA-305 is driving me mad! Can someone help me, please?

    Hello there, I think this is my first post. First of all, I saw a lot of posts here about this beauty and they were very helpful. I found this amp somewhere - can't even remember! It was forgot on a shelf in my lab since some years. And I decided eventually to take a look at it. Inside I...
    • asbesto
    • Thread
    • diagnose kenwood ka-305 repair
    • Replies: 9
    • Forum: Solid State
  24. S

    "Working" receiver does not put out any audio

    I have recently come into the possession of a Kyocera R-861 receiver. It was sold as "working". It looks like a very lovely machine. The wood-grain paneling could use a little love, but I will fill in the broken-up edges with wood putty and carefully paint it to match the veneer. Won't be...
    • Smellycorpse
    • Thread
    • diagnostics kyocera kyocera r861 receiver repair reciever repair tuner amp
    • Replies: 20
    • Forum: Solid State
  25. gmjunkyard

    reputable service in my area sx-1980

    Hello fellow members, I own a "Monster" SX-1980. My FM tuner is completely useless at the moment. It was functioning perfectly up until a few years ago. Since then I purchased an Onkyo Tuner as a substitute "fix". I'm ready to have the Monster repaired. I live in Central North Carolina...
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