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repair

  1. B

    Marantz 2230B left chanel issue

    Hi everyone I'm new here. I got this Marantz 2230B and wonder if this can be repaired. It sounds good but after a while the left channel drops. I tried switching the speakers to see if it would be the speaker. I cleaned the contacts and the potentiometer. Then, I tried switching the amplifier to...
  2. T

    Luxman r 1050 dolby fm question.

    So I just bought a Luxman r 1050 receiver and have been working on it for a couple of hours now. I have it to the point where it's basically fully functional however there is a bit of a weird issue that I am not too sure about. The volume indicator leds only work if the dolby fm feature is...
  3. lsorrentino

    Sony PS-X800 repair and full calibration

    Hello all, some time ago I aquired two Sony PS-X800 turntables, both are faulty, and I would like to share with you the entire job of fixing and calibrating. First one I'm tryng to restore arrived to me from Rome, I bought it completely dead, in acceptable cosmetic conditions but without cover...
  4. C

    Yamaha Natural Sound Stereo Amplifier A-7

    Hey guys first post/thread here, need some help. Recently purchased this Yamaha Natural Sound Stereo Amplifier A-7, which as far as I can tell is a Japanese Domestic Market model of the A-960 which means it runs on 100V. I live in a 230V country, so I used a step down transformer rated at 110V...
    • ChaseK
    • Thread
    • japanese electronics repair step down transformer yamaha yamaha a960 repair
    • Replies: 26
    • Forum: Yamaha
  5. AdventDude

    Hafler XL-280 power problem (hoping for guidance)

    Greetings, A very close friend from high school convinced me to go the Hafler route many years back and I purchased both a DH-110 preamps and XL-280 (both in kit form) just about 35 years back. Though I've had a few minor connectivity issues arise over the past few years with the DH-110, the...
    • AdventDude
    • Thread
    • fuse hafler power repair switch
    • Replies: 10
    • Forum: DIY
  6. B

    Hitachi HMA-8500 MkII pushbutton switches

    Hi! The two pushbutton switches on my Hitachi HMA-8500 mkII broke while back (meter range &BTL). It is now at an older Hifi enthusiasts house for repairs and we have sourced a good replacement for the 12-pin meter switch but we are in search of a 24-pin pushbutton switch that will fit. It needs...
    • Bennebroor
    • Thread
    • hitachi pushbutton switches repair
    • Replies: 1
    • Forum: DIY
  7. foxbyrd

    Onkyo TA-R22 - Output only in mono, muffled audio

    Hey there, I recently acquired an Onkyo TA-R22 stereo tape deck at an estate sale. It seemed to be in working condition -- however when I plugged it in and gave it a listen, there was a pretty enormous audio quality issue. I figured it was likely the heads and pinch rollers that needed...
    • foxbyrd
    • Thread
    • cassette deck repair onkyo onkyo ta-r22 repair tape deck tape deck repair
    • Replies: 1
    • Forum: Tape
  8. VintageDutch

    Might have found a STK Module source

    Hi, Today I went to a local electronic parts shop where I buy lots of "run of the mill transistor and other brand new "e-waist" :) The owner had a bit of spare time And he told he might have a nice stack of ORIGINAL **N.O.S** STK Power AMP modules Might be coming up for sale. There are some...
  9. J

    Ayuda para reparar mi amplificador Sony Ta-f3a

    hola a todos, tengo un amplificador antiguo marca Sony modelo TA-F3A, el problema es que no funciona, resistencias quemadas fusibles quemados y transistores no los he comprobado todavía, según he leído estos amplificadores tienen problemas con 2 diodos en concretos pero no se cuales son sus...
  10. galactech

    Strange Noise coming out of left Speaker after reciever is powered off?

    Speakers: Bang & Olufsen Type M Passive Loudspeakers Reciever: Sansui QRX-4500 Turntable: Project Debut Carbon Hey all, recently I’ve noticed that after turning off my reciever, my left speaker makes a consistent/replicable noise after 10 seconds or so. It only lasts a few seconds, but it’s...
    • galactech
    • Thread
    • bang & olufsen loudspeaker repair speaker advice troobleshooting
    • Replies: 6
    • Forum: Speakers
  11. T

    Pioneer lx 440 reciever sounds distorted via speakers but fine via headphones?

    See title. I was looking around online and read a thread where someone fixed the issue by recapping the power supply. I am pretty sure this is necessary regardless considering the lights sometimes dim a bit out of nowhere. But is there anyway to make sure that this is indeed the issue?
  12. T

    Luxman sq 505x right channel dead.

    So I bought what I thought was a luxman sq 507x but what ended up being a luxman sq505x with a 506 front secondhand a couple days ago but it has a dead right channel. After some trouble shooting I found out that someone had connected the pre amp connector switch incorrectly so I was hoping that...
  13. T

    "Works as it should, sounds great!".............

    As you could probably tell it does not, in fact, work as it should or sound great.
  14. B

    Roksan Kandy amplifier - One input broken?

    Hi, I have a Roksan Kandy integrated amplifier, with multiple working inputs. But the "CD" input has no sound. I can repair electronics, but I'm confused with this. The RCA connector itself is fine, it passes current with a multimeter. It then goes into a circuit, circled in red: Is it...
    • Barib
    • Thread
    • input integrated amp rca repair roksan
    • Replies: 9
    • Forum: Solid State
  15. T

    Mc cartridge with broken pins ?

    I just bought a broken at33ev cartridge from which two of the connector pins broke off/fell out. See the picture I attached. I was wondering if there was a way to get this repaired and what the average price of something like that would be. And if it's possible to even repair this. The...
    • TrevorBarten
    • Thread
    • audio technica cartridge defective moving coil repair
    • Replies: 12
    • Forum: Turntables
  16. T

    mitsubishi lt5-v does everything except horizontal tonearm movement?

    I got a mitsubishi lt5-v today that does everything except move the tonearm left or right. I checked the sensors but both the leds and the resistors are working as they should. I checked if the motor was running and it worked just fine. If I move the arm by hand it drops down at the correct...
    • TrevorBarten
    • Thread
    • lt5-v mitsubishi lt repair standing vertical vertical turn table
    • Replies: 3
    • Forum: Turntables
  17. Ray122

    Marantz 4270 Help...

    Alright, so I've got a Marantz 4270 with a bad channel, spitting out DC and throwing it into protection mode. Only one of the output transistors was shot, I believe it was the one that handles the negative swing. Otherwise, all the semiconductors on the board and otherwise are testing OK. I can...
    • Ray122
    • Thread
    • 4270 amplifer help marantz marantz 4270 output drivers repair repair channel diagnostics repair help
    • Replies: 6
    • Forum: DIY
  18. sean sweeney

    HELP WITH MOTORBOATING IN SYNTH CIRCUIT... Crumar Orchestrator.

    I finally got this thing going last night... tons of work and it's a complicated little beast!! But while I had this circuit working for a short time, I swapped out a transistor and now I have some SLOW motorboating going on... that gets faster if I adjust certain parameters. I'm realizing there...
    • sean sweeney
    • Thread
    • crumar help motorboating orchestrator repair synth
    • Replies: 0
    • Forum: Solid State
  19. Garret86

    Super mysterious volume pot issue

    I’m having an issue with a volume pot where where it only works when I hold the knob at a specific angle. When I let go of the knob the left channel plays at a random volume , and the right channel plays at where ever the knob is set. When I jiggle the knob and hold it both channels sync up in...
    • Garret86
    • Thread
    • advise cleaning repair volume pot
    • Replies: 19
    • Forum: DIY
  20. T

    Direct drive servo recordplayer issues.

    For reference the record player is a yamaha yp d4 I have this record player that works but has a few issues. The two main ones being that it spins at the correct speeds but it slowly speeds up over time. And also that unless I turn the internal potentio meter all the way up for 33 rpm it just...
    • TrevorBarten
    • Thread
    • direct drive recordplayer repair servo yamaha
    • Replies: 14
    • Forum: Turntables
  21. scootsity5

    FM Generator Reputation

    Hello I've been offered one of three FM generators at a very reasonable price. I intend to use it for AM and FM alignments. I don't have a distortion analyzer, so I probably won't be doing MPX alignments, so while I appreciate that one of the two units has stereo, and one does not, I likely...
  22. Frequency295

    Another Advent 300 Rebuild: My First

    OK so I'm sure there are a lot of Advent rebuilds on this site but I figured its easier to start a fresh thread. I am new at this repair scene and was hoping folks could help me on my way as I make silly mistakes. I did review a handful of existing threads ahead of time so I had a starting...
  23. T

    Weird power issue on this yamaha tc 720?

    I have this yamaha tc 720 and apart from all the belts having turned to mush it has a weird issue. I can't really describe it so I made a video. It seems it loses and quickly regains power every second or so. Is this due to the belts not being there or is something else going on?
  24. T

    Yamaha yp-d4 potentio meters?

    I have a yp-d4 that I have been working on for a while. I recapped it and cleaned all the pots but the turntable still isn't working correctly. I removed some of the pots out of the circuit and after this it worked fine at 33,3. I also got it to work a few times before after intense cleaning of...
    • TrevorBarten
    • Thread
    • help potentio meters repair request yamaha yp-d4
    • Replies: 2
    • Forum: Turntables
  25. PaperBoy007

    Anyone try Prof Bizzt Sony PS-X800 hinge pocket strengthening kit

    Professor Bizzt used to sell a dustcover hinge pocket strengthening kit for the Sony PS-X800 & PS-X555ES turntables. When I did a search I see where he has sold the kits, but the images are not available. When you go directly to his webstore.com site, they are not listed as being for sale at...
    • PaperBoy007
    • Thread
    • dust cover hinge pocket repair sony ps-x555es sony ps-x800
    • Replies: 0
    • Forum: Turntables
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