• 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. Anonky

    Pioneer sx2500 with intermittent problems HELP!

    Hi all, Have a pioneer sx2500 on fantastic cosmetic condition that plays wonderfully when working properly. However, it has intermittent problems with both channels on all inputs. I figure that since it’s on all channels problem likely lies in the main amp unit or protection unit (AWM-004 in my...
  2. F

    Sony TA-AX22 repair

    Hi, I'm quite the beginner in DIY repairs, so I'd like some help troubleshooting. I have an old Sony TA-AX22 amplifier. The speakers don't work (no voltage at all on the outlets, but the resistance of the speakers themselves seems fine). The STK 2129chip might be at fault from what my...
    • Felixpotato
    • Thread
    • amplifier repair sony ta-ax22
    • Replies: 7
    • Forum: DIY
  3. Anonky

    Pioneer QX-949 left channel noise

    Hi all, I have a qx-949 that plays music on both channels on all inputs; however, the left channel has persistent static noise. This occurs on all inputs. For what it may be worth, dc offset in right channel is rock solid at 2.5mV. Left channel was like 60mV. Considering this problem and...
    • Anonky
    • Thread
    • pioneer qx949 repair troubleshooting
    • Replies: 5
    • Forum: Pioneer Audio
  4. C

    KT-5300 Faceplate Foam

    Hi, Folks, I recently picked up a KA-5700 along with a KT-5300. I shipped the 5700 to a tech for repair, and kept the 5300 on my bench for some cleaning. The interior of the 5300 is immaculate. It looks brand new. The outside needs some cleaning and touch-up, but nothing a little soap and...
  5. Carguy1394

    Pioneer A9 repair in 2022 appreciatte any advise help

    Hello everyone in this forum. I will be grateful for any advice and help that someone gives me because I have not repaired any amplifier so far. This is another renovation of Pioneer A9. It differs from all the repairs described so far in that most of the transistors recommended here for...
  6. Anonky

    Kenwood KR9600 dc offset... adjustment?

    Have a kenwood kr9600 in pretty good condition after a solid cleaning, working seemingly fine. Checked dc offset because why not and measurements are as follows: L channel: 5mV, R channel: 115mV. Both are stable, but the R channel is mildly concerning. I'm seeing from an old EchoWars post...
  7. B

    Tube audio repair.

    Hi, my name is Brian and I'm new to to the site and forums in general so let me know if there is somewhere else I should be asking this question.... My 1st tube amp was a Chinese Yaquin MC-100SE (ya I know, that's my problem right there, lol) that sounded pretty decent at first then started...
  8. J

    Beginner ferrofluid question.

    Alright so I got some PSB image 4t towers used and noticed right off the bat that they sounded terrible contrary to all the fantastic reviews. I ended up tracing the issue to the tweeters. Seeing that stock replacements aren't available and if they are are far more than I want to pay I was...
  9. D

    KLH Model 12

    So, Ive gotten my hands on a pair of 1968 klh model 12 speakers. I got them in working condition but unrestored. Used them for about a year until it became apparent that they had deteriorated a bit. Im awaiting the parts for a full restore of the boxes, my only remaining issue is that one of the...
    • Dean Visser
    • Thread
    • klh model 12 repair replace vintage woofer
    • Replies: 2
    • Forum: Speakers
  10. Timothy Flath

    DIY Restorations for Fair Use Cassette Audio Tapes

    Here are a number of Cassette Audio Tape repair, repalcement and restoration videos I have posted over the past couple of years hoping that some may be helpful to folks in the forums here. Thought I would start a thread to have them all linked in one location. Will start with my first one posted...
    • Timothy Flath
    • Thread
    • audio cassette repair replacement restoration tape
    • Replies: 7
    • Forum: Tape
  11. hippo008

    Pioneer SX-550 "POP" on startup and hiss at high volume

    Hello all, I just finished a repair of my SX550 I got for $25. After replacing some caps in the power supply, new LED lights, cleaning the pots and setting the bias it sounds pretty good! I am very happy with its turnout. I am having two persistent problems though, on startup there is a loud...
    • hippo008
    • Thread
    • help pioneer power amplifier repair reciever repair sx550
    • Replies: 1
    • Forum: Solid State
  12. Anonky

    Kenwood KR-790 issue

    Hi all, Picked up a seemingly rare bird yesterday. Kenwood KR-790. 130wpc. Crazy cool 80s front display, dark wood case. Looks like it belongs in a space shuttle. Condition is almost perfect albeit missing one of its four feet which I’m rigging up a makeshift replacement for.. At first it...
  13. A

    Infinity WTLC Repair

    I recently purchased a vintage pair of Infinity WTLC speakers in decent shape. They sound really incredible, but I noticed that one of the speakers is playing at a lower volume than the other. After switching the wires, outputs, and even repositioning the speakers, I'm confident that there's a...
    • AnimaMvndi
    • Thread
    • capacitors infinity wtlc repair
    • Replies: 6
    • Forum: Speakers
  14. Timothy Flath

    Yamaha CR-2020 Repair Project

    Hi folks Have started in earnest to attempt repairing a Yamaha CR-2020 that was completely dead. Started with the obvious Power Supply board issues that I have seen posted on YouTube and decided to start with a full electrolytic recap (except the large filter caps) of the Power Supply Board and...
    • Timothy Flath
    • Thread
    • cr-2020 power supply problem receiver repair vintage yamaha
    • Replies: 20
    • Forum: Yamaha
  15. T

    Yamaha TC-520 not able to record and play

    Hey there all, Hoping someone has a fix for this before I either: a) tinker this tape deck to death b) pay someone else to deal with it I'm trying to record some mixes from an external source, and for whatever reason, I can't get the record button to work while playing the tape forward. At...
    • Travis Kaupp
    • Thread
    • cassette record repair tape tc520 troubleshoot
    • Replies: 0
    • Forum: Tape
  16. T

    Lights replacement on receiver not working as intended ?

    I was working on a jvc vr-5505l receiver and it has this selector board with 2 rows of 4 lights on it. Basically all the original ones had disintegrated so I bought some modern day led light replacement not thinking much of it. However when I put those on they all lit up at once and the...
  17. T

    Sony ps x-75 biotracer Arm swings over de platter

    I just bought this defective ps x75 that doesn't cue and has an arm that swings over the platter before reacinh the correct position. The recordplayer hasn't arrived yet so I don't know if the arm controls are working but I wanted to create this forum in advance to see if anyone has experience...
  18. VintageDutch

    Repairing A Kenwood KR-44SL

    Hi Kenwood lovers. I picked-up a nice looking KR-44SL.. Yes yes the one with 4 Shortwave Bands, LW and Regular AM and FM. It was for sale in a Thrift shop and Cost me €35,-- Can't argue over the price. Tested it.. AM and SW where great... FM... very insensitive... no Stereo, no movement of...
  19. Anonky

    QX-949 repair

    Long story short I have a pioneer qx-949 with a weak right channel in stereo mode on AM/FM/phono inputs; there is essentially no bass output and treble sounds off too in the weak channel. AUX input works perfectly in stereo mode (no weak channel). To make things more interesting, when I flip the...
  20. Megaladoink

    Carver TFM-15cb Binding Post snapped

    I had a person ship a TFM-15cb poorly and one of the speaker binding posts snapped off. I really just need one but I may need the entire assembly. I tried Bob Carver directly through the website but no reply. Thanks, Chris
  21. Anonky

    Repairing realistic optimus 4s, a tweeter impedence question?

    Optimus 4s have a woofer two identical tweeters, each of the tweeters are 16 ohm. None of the tweets were working so I disconnected the tweets from crossover and none had continuity. Didn't appear to be a simple fix on any of them (broke tinsel lead, etc), so I've ordered replacement 8ohm 2 in...
    • Anonky
    • Thread
    • impedance optimus 4 realistic repair tweeter
    • Replies: 33
    • Forum: DIY
  22. perby

    Pioneer PD-4550 tech support :)

    Hey there friends, I recently acquired a Pioneer PD-4550 CD deck (10 bucks!) that is in near-perfect cosmetic condition. The problem is when I try to play a CD, it spins the disc twice then gives out. I took it apart to take a peek inside, and the lens was loose in the unit (but sources around...
  23. L

    Marantz MA-700 Monoblock Repair Help

    Hi, I've had a lot of MA-700 monoblocks over the years and they always eventually succumb to intermittent popping. This seems to be a common issue. This area of the P701 circuit board tends to get a charred look: Here is the whole board layout: Here is a schematic of the whole circuit...
    • Lee Hester
    • Thread
    • capacitors marantz repair transistors
    • Replies: 3
    • Forum: DIY
  24. F

    Harman Kardon hk 100m belt replacement help

    Greetings all, Sorry this is such a simple question, but I'm trying to get this done and I think i'm just about there! I picked up an hk 100m a few weeks ago. Great physical shape, but playback auto stops after a few seconds. Opened it up and poked around and eventually figured out the belt...
    • foofiebeast
    • Thread
    • belts cassette deck harman kardon repair
    • Replies: 3
    • Forum: DIY
  25. T

    Sony tps l2 defective microphone replacement ?

    So I have a tps l2 that's almost completely working again but suddenly the microphone stopped working. The only thing it picks up is if I blow into it or if i tap the microphone. I measured the resistance over the wires and on the connection on the board but all seem to be fine. I assume the...
    • TrevorBarten
    • Thread
    • first walkman help microphone old rare repair tps l2 vintage walkman
    • Replies: 0
    • Forum: Tape
Back
Top Bottom