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repair

  1. J

    Technics SA-5760 Relay clicks in, but no sound

    Just picked up a technics sa 5760. Everything lights up, the meters move, and the relay clicks in but I get no sound at all. I've already cleaned all the switches and tried multiple inputs. Fuses all seem to be good too. Wish I could disconnect the preamp from the amplifier on this thing. Thanks...
  2. Allweather

    Help refurbishing/fixing Vintage Infinity EMIT Speakers

    Hi everybody, I am trying to refurbish a pair of ~1970s Infinity EMIT speakers for my father as they were/are the first and only hi-fi speakers he ever bought for himself and I want to give them back to him as a working set. When driven they sound surprisingly good but the left speaker will...
  3. T

    Sony ta-4650 inputs bleeding through?

    My ta-4650 has a weird thing where if you have an input going into any of the line level inputs (haven't tried it with phono yet) and you switch to either the tape monitor or any of the other channels the signal from the input will be audible even if you have the volume knob turned all the way...
  4. Ray122

    Help with Marantz 2325 Amp Rebuild

    Hey everyone. Been grappling with the amplifier section of amplifier section of Marantz Model 2325. When I received it, the left channel amplifier was keeping the unit in protection mode. When I disconnected that section and just ran it with the right channel amp, the unit comes out of...
    • Ray122
    • Thread
    • 2325 amplifer amplifier repair diy help marantz marantz repair marantz2325 repair solidstate
    • Replies: 5
    • Forum: Marantz Audio
  5. BILL JOBS

    TASCAM 424 MKIII Boot Loop + clicking sound

    Hi everyone, After cleaning and re-seating the capstan belts of my Tascam 424 MKIII I'm experiencing an infinite boot issue with the device when powering it on. Here's a video demonstrating the issue: A faint whine and clicking sound can be heard when the device is powered on. Has anyone...
    • BILL JOBS
    • Thread
    • 424 cassette mk iii repair tascam tascam 424
    • Replies: 3
    • Forum: Tape
  6. S

    Pioneer SX-580 No Audio with power right power meter on max

    Hello, I have a pioneer SX-580 that has been working for years. Recently the speakers stopped working and it seems that only the left A channel works. The two 4A fuses were blown and when replaced the watt meters jumped around and the right one stayed just over half way. The power ICs were...
  7. Ray122

    Help with Marantz 2325 Amp Rebuild

    Hey everyone. Been grappling with the amplifier section of amplifier section of Marantz Model 2325. When I received it, the left channel amplifier was keeping the unit in protection mode. When I disconnected that section and just ran it with the right channel amp, the unit comes out of...
    • Ray122
    • Thread
    • 2325 amplifer amplifier repair diy help marantz marantz repair marantz2325 repair solidstate
    • Replies: 4
    • Forum: DIY
  8. T

    denon sa-3900 service manual and questions about caps.

    I have a denon sa-3900 amplifier that is quieter in one of the channels. I have thoroughly cleaned the switches and pots but that doesn't seem to be the issue. I have been pulling all the electrolytic capacitors of the board to check them but most seem to be within 20% of their rated value. So...
  9. T

    Nad c326bee amplifier pre amp not working?

    I already posted about this amp +-6 months ago, however I haven't really touched it since. I got a working c326 cheap so now I have been testing the components with the working amplifier. I ruled out the power supply board, the entire power amplifier section, the entire front panel, and all the...
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. 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...
  15. 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
  16. 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...
  17. 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...
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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...
  23. 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
  24. 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
  25. 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...
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