• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

repair

  1. A

    Nikko QSR-4040 Distortion Questions

    Hello AK users, I'm still working through my Nikko QSR-4040 quadraphonic receiver. I have gone through it; replaced caps, bulbs, cleaned controls twice, etc. However, when I got the unit it had bad bass distortion on both front channels, the rear mimics front in 2CH. I'll do more thorough...
  2. Mat86

    Replacing a headphone jack? (C-4)

    So long story short, last summer I tripped over a headphone cable, destroying both the headphone plug, cable, and the amp's jack. I was able to repair everything involved in the crash, using some krazy glue and baking soda to get the plastic housing back together. As you can see in the pics, the...
    • Mat86
    • Thread
    • headphone repair yamaha c4
    • Replies: 37
    • Forum: Yamaha
  3. W

    Attempting to fix my dads RFT k13ProfiL

    Trying to fix this speaker. Both drivers are working (tested them by holding the audio cable from my receiver directly to the contacts on the drivers) so i think there is a short on the pcb board. I know very little about electronics so it's hard for me to follow the path of current. I tried...
    • waxdaddy
    • Thread
    • broken pcb repair rft speakers
    • Replies: 6
    • Forum: DIY
  4. W

    Attempting to fix my dads RFT k13ProfiL

    Trying to fix this speaker. Both drivers are working (tested them by holding the audio cable from my receiver directly to the contacts on the drivers) so i think there is a short on the pcb board. I know very little about electronics so it's hard for me to follow the path of current. I tried...
    • waxdaddy
    • Thread
    • broken pcb repair rft speakers
    • Replies: 16
    • Forum: Speakers
  5. IgniFerroque

    SL-1700 mk2 shipping damage :(

    Good News: I got a free Technics SL-1700 mk2 Bad News: because the ebay seller shipped it loose in a box without a scrap of packaging and without the tonearm secured Good News: The platter didn't come loose and still spins quietly at the right speed. Bad News: The tonearm makes a creaking noise...
    • IgniFerroque
    • Thread
    • disaster ebay repair sl-1700mk2 technics sl-1700 mkii turntable
    • Replies: 4
    • Forum: Turntables
  6. F

    Need Audio Repair Nashville Tennessee

    Anyone know of any audio repair technicians near Nashville? I used Hi-Tech Service a few times but they closed a couple years ago. I have an SX-1250 that I'd like to get restored. Thanks, Chad
  7. razpones

    Boston G2 subwoofer

    Hi everyone While I was walking my dogs I came across a Boston G2 subwoofer speaker for car audio at the park. Someone most have taken it off from their car and dumped it. So I took it home not just to keep the parks clean (I find all kinds of stuff when I walk my dogs, it is amazing, some at...
    • razpones
    • Thread
    • boston coil repair subwoofer
    • Replies: 2
    • Forum: Speakers
  8. Szalbierz

    Sansui 9900Z Repair

    Welcome guys, i am reparing my Sansui 9900Z. I bought this Reciever some years ago on Ebay. On Power Amp. Board all drivers (Q7-Q11) and power transistors (Q1-Q4) were burned. Q12 and Q13 were fine, just like "kQFT1" (JFET x2). I decided to change all of them here is the list: Q1 2SC3858 Q2...
  9. T

    Driver thudding at medium volume

    Speakers: definitive technology bp-20 with bp-30 woofers. 6ohm impedance 500w max. Amp: adcom gfa 5500 200w/ch @8ohms Hey all, I ran into an issue today after sitting down to have a listening session. About halfway through a song that's pretty heavy on the bass, two of the mid-range drivers on...
  10. M

    Help with DBX 3BX

    Hello, I am trying to repair a DBX 3BX Series I (revision 2, the one without the daughter boards). Some things I managed to fix but I still have a problem with the MF circuit. As soon as I raise the expansion, no matter the transition level, the output goes up as you can see in this video...
    • _MBK
    • Thread
    • 3bx dbx repair
    • Replies: 0
    • Forum: DIY
  11. Alonia

    NAD Model 300 repair

    After a long time where I was no longer active here I would like to throw an interesting project into the room and maybe someone can help me. Normally I mainly deal with Yamaha devices but for once a NAD Model 300 has found its way onto my desk.;):biggrin: There was a note on the lid...
    • Alonia
    • Thread
    • nad nad model 60 repair repair amplifier
    • Replies: 5
    • Forum: Solid State
  12. L

    Repair help: Yamaha AX-540 amp

    Love my old AX but the left channel sounds slightly "dull" compared to right channel. At first I thought it was just a volume difference, but it also lacks some brilliance compared to the other channel. Sitting at ideal listening position, the right channel sounds brighter and louder. I have...
    • Ludd
    • Thread
    • amplifier repair yamaha
    • Replies: 6
    • Forum: DIY
  13. Wordman

    Repair near Knoxville, TN

    Hello! Been a member for a long while, but haven't been on in a very long time. I have the full Heathkit Professional set w/AA-1800 amplifier and a DUAL turntable. Does anyone know of a place somewhere within a few hours drive of Knoxville, TN (or The Villages, FL) where I can take the various...
  14. V

    Pioneer SX 727

    Hi, I bought a Pioneer SX 727. I noticed two things. One, the bass knob doesn’t go full power, it goes only 3/4s of the way. In addition, whenever i turn from fm to phono or other, there is quite a loud static noise.
  15. angelaudio

    Help with Heat Damage on PCB of Mitsubishi DA-A30

    I opened up my Mitsubishi DA-A30 to set the idle current and center potential adjustment and immediately noticed some heat stress marks on one of the PCB boards (CTL-56). It appears that the heat stress is right underneath two 820ohm 2W resistors R313 & R314 No other part of any other board...
  16. I

    Resources request on how to repair vintage audio devices

    Hello! I want to learn to repair reel-to-reel, pick-up and amplituners. I have a minimal knowlegde about electronics. I tried to search on the web for useful materials but I am only able to find some general electronics documentation. If anyone knows some books, courses, tutorials, please...
    • ITChristian
    • Thread
    • amplituner pickup reel to reel repair
    • Replies: 5
    • Forum: DIY
  17. Freestone

    Pioneer SA-6700 Power on, No Sound

    Hi all, I am new to audio equipment, audio karma, and vintage electronics. I purchased my late model SA-6700 in its current condition for $90 because I love the look of it and have experienced the high quality sound from a similar Amp in the past. I have been wanting to get a nice setup for a...
  18. M

    Advice on repairing my Infinity speakers

    Hi! I have a pair of infinity RS5000 that need some love. The boxes are broken, foam is long gone, woofers are dirty and some of the plastic is broken. I also assume that the capacitors are not in the best shape. I asked about them here few months ago and was told I need to do a lot of work...
  19. MorrisonAgen

    SX-1050 with slightly different levels between channels

    Hey all! I have a client with an SX-1050 that I restored for him a few years ago. I went to his place last week to install a phono cartridge for him a do a little cleanup on a Marantz 2335 that he just bought. He mentioned that he was getting a SLIGHTLY higher output out of the right channel...
  20. Allison3

    Citation 16 diagnosis/repair needed in MA/Southern NH/RI, please help!

    My wonderful HK Citation 16 has developed an increasingly persistent hum and has been acting (increasingly) dodgy over the past couple of weeks. I'm so frustrated trying to find a good tech near me, but if anyone knows someone who could check it out in MA/Southern NH/RI I would be super grateful.
  21. S

    Hacked up Pioneer SA-9100 restoration

    A friend decided to buy a SA-9100 unseen and having no amp restoration experience, and me having a few sucesses under my belt, he passed it to me to fix for him. Now of all the amps that have sat upon my work bench in its various forms, I have never seen an amplifier with this degree of...
    • SansuiSushi
    • Thread
    • advice needed bad repairs repair restoration help restoration project sa-9100 repair
    • Replies: 30
    • Forum: Pioneer Audio
  22. AudioScout

    Marantz 2275 Receiver - No Sound Left Channel

    Receiver: Marantz 2275 Problem: No sound, left channel. (Both Speaker and Headphone) What I've done so far: Connected the main out and in via RCA and swapped the cables. Left Channel still out. Swapped P700 Output board positions. left Channel still out. Swapped Output capacitor positions...
  23. G

    In what order would you inspect/test/repair an old speaker?

    Someone in my neighborhood decided to give away their pair of Wharfedale W60D's and I decided I'm going to get into refurbishing vintage speakers. I did some research on them and it seems they have fragile tweeters - and indeed these have one broken tweeter - and can usually use a recap...
    • gravyrobbers
    • Thread
    • diy repair vintage wharfedale
    • Replies: 9
    • Forum: DIY
  24. GrandDesigns

    ADS SAT7 repairs

    I picked up a set of three (3) ADS SAT7 speakers locally for $50 plus a trade in of a box of random old electronics and computer server parts at a local electronics store. The ADS name drew me to these and they have beautiful cabinets, but some research ultimately indicated these were made at...
    • GrandDesigns
    • Thread
    • a/d/s/ ads repair sat sat7 speaker vintage
    • Replies: 0
    • Forum: Speakers
  25. Roman68

    Technics rs bx707.Help!!!

    Hello. I need help with a Technics rs bx707 cassette deck. The tape recorder works and plays perfectly, but unfortunately it suddenly stopped recording. Instead of an input signal, it records a sinusoidal signal with a frequency of approximately 5 kHz. the recording level can be adjusted. When...
    • Roman68
    • Thread
    • cassette repair technics technics rs bx 707
    • Replies: 0
    • Forum: Tape
Back
Top Bottom