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repair

  1. T

    b&w dm4 issue where volume at certain frequencies is lower relative to the rest.

    I made a post about an issue with a dm4 set a bit ago but due to the issues with searching I have been unable to find it so I apologize for opening a new thread. Previously I had an issue with the woofer rattling but that seems to be fixed as I noticed that the rubber ring on the woofer was...
  2. JamesWest...

    Nikko TRM-1200 Amplifier (1970) Repair Questions

    Hello all, I have what seems to be a bit of a rarity; A Nikko TRM-1200 preamp-amplifier (approximately 1970). Which I am having a couple of issues with. First, the VU meters seem really insensitive. They move a little if I turn on the loudness switch. Any thoughts? As a note: I did replace...
  3. T

    B&W dm4 speaker rattle, crackling noise at specific moments only?

    So I know next to nothing about speakers. I have a pair of dm4s that I haven't looked at for years. Today I tried them and noticed that one of the speakers sounds kinda rattly at certain points. I also feel like the volume drops at times but I cannot confirm this. I also find it very hard to...
  4. S

    Vintage solid state repair, Winston 560

    Hello all, I recently picked up a low wattage (speaker is rated for 2 watts) amp on the verb, and it has a few issues. I think it needs a cap job, because after a few minutes of playing on higher volumes (so far higher volumes only) it starts humming and ring modulating. At low volumes it works...
  5. jjsxr9

    Technics Sl-230 Motor

    Hi everyone, I have a technics SL-230. It was not keeping speed very well so i cleaned the fine-tune speed knobs and replaced the belt, as it was in need anyway. Played really well and held speed flawlessly for a few weeks. Then, sometimes when starting it the turntable would need a nudge to...
  6. S

    Adcom GFA5800 Power Switch LED is out

    Power LED on Adcom GFA5800 is out. How to replace, what part, etc. Thanks a million to anyone who can help!!
    • SeattAl
    • Thread
    • adcom adcom 5800 led power amp repair switch
    • Replies: 0
    • Forum: DIY
  7. Siraudio85

    Kenwood KA-7002 Idle current Adjust Proceedure

    Hello everyone, I have been struggling with my KA-7002's Idle current adjustment. Unfortunately the service manual isn't so clear. So far I have: Connected 2 dummy loads of 80ohms each to each channel on speaker terminals. Connected a 1 Khz signal through aux port. (Manual says main but if I do...
  8. B

    Yamaha R700 Tuner Trouble

    Hello Guys, I'm currently working on a Yamaha R700. The power amplifier was shot, so I replaced the 3 hybrid ic modules and a couple of resistors that were burnt and I recapped the whole unit because all caps were leaking. Now that part of the receiver is working very well. Now I’m facing some...
  9. T

    denon pma-500v amplifier dead channel repair?

    I got this amplifier a while ago and I noticed that the fuse on one of the channels was blown (I think it's the right one). I measured the output transistors and the ones for the defective channel where shorted. I ordered some new ones and installed them (for both channels since I read online...
    • TrevorBarten
    • Thread
    • dead channel denon help japanese out transistors repair
    • Replies: 16
    • Forum: Solid State
  10. Drakevinyl

    JBL 4311 Speaker Insulation Mold?

    I just recently got a pair of JBL 4311 speakers off Marketplace for $50, the cabinets are really beat with a good bit of damage (a sizable chunk missing from one and a bit of warping on the other) but the drivers are pristine and they sound amazing. I took them apart the other day to see the...
    • Drakevinyl
    • Thread
    • insulation jbl jbl 4311 mold repair restoration speaker advise speaker cabinet speaker inspection
    • Replies: 21
    • Forum: Speakers
  11. folklore

    Pioneer A35

    I've been collecting some vinyl for about 10 years now because I always knew I'd get a turntable, but due to the cost, I never have. My mom has bought me some of those suitcase record players throughout the years, but I always told her to take them back. Finally, my dad has decided to give me...
    • folklore
    • Thread
    • pioneer a35 pioneer pl-a35 repair repair help
    • Replies: 22
    • Forum: Turntables
  12. apauly

    Studiomaster Mixdown Classic 8 Console Problem

    Hi! I've been working on a Studiomaster Mixdown Classic 8. I opened it up to make sure the levels were selected properly (i.e. balanced +4 dBu). In order to open the console, you have to take out the entire board, not by channel strip. In doing this, I accidentally pulled some multipins in the...
    • apauly
    • Thread
    • console diagnostics diy mixer mixer repair repair studio
    • Replies: 1
    • Forum: DIY
  13. AshhBoy_

    Kenwood GE-1100 graphic equalizer repair (recap and analyzer issues)

    I've been using this beautiful unit for a little while now and thought everything was fine, although a bit crunchy when pressing buttons. The Sound has the 'warm' feeling from old caps and the power supply caps for sure need to be replaced, hence that thread. The first owner was my father, unit...
  14. A

    Luxman L-80V Problems! Help!

    Hello, A few months ago I retrieved my Luxman l-80v from storage. After connecting it up it started humming aggressively so I turned it off and let it rest for a bit. On the second attempt, the humming grew and the old 50v 10000uf Capacitors exploded. All 3 of the 0.3A 250v 6x30mm fuses were...
    • AmpSound
    • Thread
    • 10000uf diagnose help luxman luxman l-80v repair repair amplifier replacement
    • Replies: 14
    • Forum: Solid State
  15. AshhBoy_

    dbx cx3-mkI faulty channel repair

    After having my cx3 fixed because of a dead right channel on arrival, I used it daily for about two years with mostly no issues. Two days ago, I fired it up to discover my right channel was presenting a large ac-synced humming noise. I quickly unplugged everything and checked all my wiring, to...
    • AshhBoy_
    • Thread
    • channel failure dbx dbx cx3 operational amplifier output board preamp repair transistor
    • Replies: 4
    • Forum: Solid State
  16. badspell68

    Vintage Audio Receiver Repair in PA or Bucks PA?

    Anyone have a recommendation for a QUALITY and EXPERIANCED vintage Audio repair person in the PA or Busks PA area. So many of these shops are sloppy and brutal on vintage equipment and I need the real deal, an engineer repair type. Have a Yamaha CR-2040 that needs Caps replaced and fine tuning...
  17. T

    teac c-1 pinch rollers?

    I have a beautiful teac c-1 that I'd like to get up and running again. It's fully functional except for the pinch rollers that have turned to mush. I'd like to find a replacement but it's proving quite difficult as the pinch rollers aren't any of the common sizes. Does anyone have any tips...
    • TrevorBarten
    • Thread
    • high end professional repair replacement teac
    • Replies: 4
    • Forum: Tape
  18. D

    Wharfedale RS10 subwoofer is restarting at high volume

    So i have a Wharfedale RS10 5 in 1 taken out from storage (for about a year). The subwoofer has been misbehaving lately. So the subwoofer is an active subwoofer that needs to be connected to the wall and takes in a subwoofer signal from an amp. So at 50 (out of 99) volume, i could not feel the...
    • drakejest
    • Thread
    • repair subwoofer
    • Replies: 3
    • Forum: DIY
  19. BILL JOBS

    Rattling/Farting Event 20/20 Monitor

    Hi there, I have a noticeable rattle on the low end on one of my Event 20/20 studio monitors. Here's a recording of the farting/rattling speaker: And the working speaker for comparison: Is this something I can repair myself by replacing some component of the speaker myself? I've already...
    • BILL JOBS
    • Thread
    • 20/20 bass diy event monitors rattle repair speaker speakers sub
    • Replies: 19
    • Forum: DIY
  20. A

    Plese Help with KEF KHT 3005 misplaced speaker problem!

    Hi everybody, i have a problem with a front speaker because suddenly it started buzzing and I realized that the center part (the silver circle) is dislocated as the picture shows. I tried to put it in place with my figer's pressure but it seems like it had a spring or something and it returns to...
    • aliberesco
    • Thread
    • kef repair speakers
    • Replies: 1
    • Forum: DIY
  21. MreowCat

    Help repairing a Garrard slx3

    So, inherited this Garrard slx3 turntable (which is similar to a Garrard sl72b, I think?) from a an older relative who'd been keeping it in a closet for who knows how long. After taking it apart to clean and regrease, I've been able to get it to run at the right speed, and the mechanisms mostly...
    • MreowCat
    • Thread
    • garrard garrard sl72b repair turntable turntable adjustment
    • Replies: 2
    • Forum: Turntables
  22. T

    Yamaha p-520 turnrable not spinning?/how does a direct drive motor even work?

    I have made a post about this before but sadly did not receive any replies. I have a fairly simple direct drive turntable made by yamaha. However it doesn't spin. I replaced the caps and tested all the other parts in the circuit but to no avail. I think it probably has something to do with the...
  23. N

    Bought a (partly defect) Technics SL-Q200 as complete Newbie

    Hello everyone I've been collecting records for a few years and am just about to dive into the vinyl world and today spontaneously (rather impusively) bought a Technics SL-Q200 turntable at a flea market. Since it has visually already suffered quite a bit and the seller could not guarantee me...
    • NilsA
    • Thread
    • cue mechanism novice repair sl-q200 technics turntable
    • Replies: 2
    • Forum: Turntables
  24. T

    technics se-9200 bias adjustment?

    I am currently working on a se-9200 power amp that really does not need that much work. I adjusted the dc offset on the speaker leads to 0.00 volts however I also wanted to adjust the bias but I couldn't really find anything about this in the service manual. I was expecting maybe a target...
  25. SalonMusique

    JBL L100 - need advice for rewiring

    Hey everyone, first post here! I am slowly discovering the audiophile world since 2 years. Taking my time to learn bits from here and there. I am very glad I found this forum so much ressources and enthusiasms! So, I found a nice pair of JBL L100 century (very late model) a week ago. Manage to...
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