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repair

  1. IowaNav

    Repairing water-damaged particle board

    I just took receipt of my parents' HPM-100's that have been thoroughly abused. Water damage, sun damage, and a few pushed-in dustcaps (one of my earliest childhood memories is the satisfying crinkle of that midrange dome as I punched my thumb into it sometime around the age of 3...) Dustcaps...
    • IowaNav
    • Thread
    • hpm-100 repair veneer
    • Replies: 32
    • Forum: Speakers
  2. G

    JungSon DA-120IA impressions and repair/tweaks

    Hey! I have acquired today a pretty interesting and at the same time beautiful amplifier from JungSon. I believe the company is sort of dead today, by this I mean it doesn't make new amplifiers today. They are still making OEM parts for the other companies (something I have read online while...
    • GytisB
    • Thread
    • china da-120 da-120ia dc offset hi end hi end audio hi fi jungson repair
    • Replies: 6
    • Forum: DIY
  3. dannysan

    SX 850 repair Seattle area

    Hey, this is only my second post so if I’m in the wrong place let me know. My SX 850 needs some serious tic and I wish I was the guy to do it...I’m not. Anyone know a reliable shop or individual in the Seattle area? Here’s a nubie story you’ve heard before...it was supposed to have been recapped...
  4. SonicTemple

    Yamaha NS-344 Speakers The Definitive Thread (Maybe)

    After benefiting from the work of others for years, I've finally decided to give back to the community. I recently purchased a set of vintage Yamaha NS-344 speakers off eBay. They're in really good condition but I noticed when listening that the right midrange speaker wasn't producing much...
    • SonicTemple
    • Thread
    • capacitor crossover inductor layout ns-344 ns344 repair schematic yamaha
    • Replies: 7
    • Forum: Speakers
  5. ethan_tedw

    Yamaha YP-211 Tonearm Lift

    I recently purchased a Yamaha YP-211 turntable for cheap on Facebook Marketplace. It’s a nice looking, vintage turntable but the rear tonearm holder is broken, which prevents the auto return feature from working. As soon as I purchased the turntable I took it to a local electronics repair shop...
    • ethan_tedw
    • Thread
    • dyi repair turntable yamaha yp-211
    • Replies: 6
    • Forum: DIY
  6. A

    Sony TA-N77ES gets hot and right channel fades out?

    Hi. Just purchased this after years if hunting. The unit runs hot and the right channel fades out... Leaving it to cool down it works again. Could it be the DC offset or the Bias that needs to be adjusted?
    • ATN
    • Thread
    • bias hot repair sony ta-n77es
    • Replies: 1
    • Forum: Solid State
  7. PiMaxC

    RE-8420 issues

    My grandfather gave me his old quadraphonic 8 track player and I recently took it to work to power a set of Kenwood 3 way floorstanders I found in an abandoned area of the building. When I hooked everything up it worked but sounded very quiet, then all of a sudden the right channel gets really...
    • PiMaxC
    • Thread
    • 8-track 8track amp amplifier panasonic re-8420 re-cap reciever repair troubleshoot
    • Replies: 11
    • Forum: DIY
  8. Ray122

    Yamaha CR-1020

    Hey everyone! Hope you're all enjoying the holidays! I once again found myself in a repair pickle and asking for the sage wisdom of members much more experienced than myself. Recently re-capped a Yamaha CR-1020 for a friend and first I ran into the issue with the misprinted polarity sign on...
    • Ray122
    • Thread
    • amplifier amplifier repair bias adjustement distorion help repair repair help service help. yamaha yamaha cr1020
    • Replies: 41
    • Forum: Yamaha
  9. T

    Un responsive sony ps-x75

    I bought this defective sony biotracer one ebay and it's completely unresponsive. I have been reading around a bit and it seems that it's most likely an ic that's broken. However before I go around and look for a replacement I would like to cross out all the other possible defects and confirm...
  10. C

    Looking for help please on fixing the damage I did to my amp...

    I just got a Pioneer SA-710 amp and after cleaning the pots, it tested perfectly. Unfortunately I didn't notice that the speaker wires were not inserted in the connector as far as they should have been, or the wire was stripped more than it should have been...in any event, the exposed wires...
  11. KinoRodori

    Sony 570ES left channel hissing

    Hi all it's my first post here and it's about my first purchased Hi-Fi amp on this audio journey. It's a Sony TA-F222ESA (aka 570ES in the west) and I admire it being a little beast with 100W @ 6 ohms with a very clear and neutral output. However the topic at hand is I'm experiencing a hissing...
    • KinoRodori
    • Thread
    • hiss hissing problem repair sony sony es transistor vintage
    • Replies: 58
    • Forum: Solid State
  12. razpones

    MCS 3223 FM one channel has very low sound

    Hello everyone, happy holidays This year I really embraced the electronics repair hobby. I particularly enjoy trying to repair audio equipment, receivers, cassette players and speakers so far. I've had relative success with some receiver and integrated amps that needed basic service of cleaning...
    • razpones
    • Thread
    • diy fm radio mcs repair
    • Replies: 4
    • Forum: DIY
  13. R

    Advent repair

    I have a pair of The New Advent Loudspeakers which I probably bought in the 1970s. I refoamed them once about 15 years ago. One has gone out, and I suspect the problem is that the nut in the back that holds the speaker wire connection has gone loose. The little sharp pointed holder for the nut...
    • rmbelson
    • Thread
    • advent speakers repair
    • Replies: 7
    • Forum: Speakers
  14. Doug Robert

    SEARS Stereo system M#304.91945 This thing actually sound pretty good.

    Anybody have any experience or info one this thing? I know its not a great table but I picked it up for 5 bucks so i could have a system in my office. Fixed the idle, put the belt back on the casette deck, cleaned the 8 track head, and well cleaned everything lol and its running great. only...
    • Doug Robert
    • Thread
    • auto player repair restoration sears stereo system turntable turntable adjustment
    • Replies: 2
    • Forum: Turntables
  15. goldfish

    PL-540: should I try to fix it or part it out?

    Hi all, long time reader, first time poster. I have a Pioneer PL-540 that I picked up for cheap a while ago, hoping I could nurse it back to health. The motor works, but the speed isn't right. Auto-return and bearings are fine. There are also some cosmetic issues: a broken tonearm rest, a burnt...
    • goldfish
    • Thread
    • ic chips pioneer pl 540 pl-540 repair turntable
    • Replies: 6
    • Forum: Pioneer Audio
  16. Alonia

    Yamaha C2a 2SC1913/2SA913 replacement

    While searching for a replacement type for the transistors TR527/528 -> 2SC1913 and TR529/TR530 -> 2SA913 I found the following transistors as comparison type: 2SC1913 --> 2SC5171 (obsolet) --> 2SC4883 or 2SC4883A (digi-key) 2SA913 --> 2SA1930 (obsolet) --> 2SA1859 or 2SA1859A (digi-key) I...
    • Alonia
    • Thread
    • preamp repair replacement transistor yamaha c2a
    • Replies: 7
    • Forum: Yamaha
  17. A

    Stax US repair

    Greetings, I have a pair of SR5s and SR30s with the SRD6 and SRD4 energizers, respectively. I haven't used them for the last six months. Today I tried them both and, conincidentally, they both failed. I tried them with three different powers amps from 40W to 70W; the latter was able to get...
  18. Dangerishman

    Microphone Repair Help

    Hello all! I am working on the blow microphone for a friend. Hooking it up it doesn't produce any sound thru his mixer/amp setup. (See mic below) I am an automation engineer by training but I don't have very much experience with audio equipment. I assume that older microphones like this are...
    • Dangerishman
    • Thread
    • broken ge help microphone newbie repair shure vintage
    • Replies: 22
    • Forum: DIY
  19. L

    Sony STR-6036 channel stops working

    Hi gents, Apologies if this is not the right sub-forum, as you can guess by my post count I'm a completely new member to the forum! I'll cut to the chase - about a year and a half ago I bought a Sony STR-6036 amplifier. It came in really good condition, the bulbs are working, all the channels...
  20. Z

    Hitachi HA-5300 speakers relay

    Hi Everyone. I am learning from all of You from some time but this is my first post. I have stumbled upon a problem for which I did not found an answer. I am during restoration of Hitachi HA-5300 and the mentioned speakers relay is in quite bad state (see the attached photos) it don't even have...
    • ziende
    • Thread
    • ha5300 hitachi parts relay repair
    • Replies: 13
    • Forum: Solid State
  21. BilboBaggins

    New cassette enthusiasts who want to fix their own decks

    I see a lot of requests from new cassette enthusiasts on how to repair tape decks. So I thought it might be a good idea to create a thread to consolidate a knowledge base. I do know something on cassette decks, but by no means a lot. These are complex electro-mechanical devices and you really...
    • BilboBaggins
    • Thread
    • aiwa akai cassette deck repair tape
    • Replies: 5
    • Forum: Tape
  22. JayPare

    Cone hole, can I refoam without replacing it?

    I picked up a pair of Atom V2 for 20$ CAD on monday and I thought it was a steal but after hooking them up I was really disappointed with their sound. I also heard some weird noise coming from them so I decided to open them, and surprise, they need refoam. I've done refoam in the past and for...
    • JayPare
    • Thread
    • cone damage refoam repair
    • Replies: 14
    • Forum: Speakers
  23. Alonia

    Yamaha A 1020 repair

    I have a Yamaha A-1020 standing here, which has a phenomenon that I have not seen before. When you turn it on everything is normal. The relay switches after 3-5 seconds and you think you can use it. Unfortunately it is not so. In the left channel there is a fluctuating voltage at the box...
    • Alonia
    • Thread
    • defect repair yamaha yamaha a-1020
    • Replies: 13
    • Forum: Yamaha
  24. S

    How does this Wharfedale W40 Speaker looks like on the inside?

    Hello, Still a beginner but this time trying to understand speakers and see if I can improve any of them. I have a pair of Wharfes that I got for 5 bucks and they sound great but I was wondering if these look fine or if something is missing or needs replacing. I would also love a description of...
    • sabalennon
    • Thread
    • repair speakers w40 wharfedale
    • Replies: 2
    • Forum: Speakers
  25. T

    Replaced phono cable on my record player and now it sounds muddy.

    I used a phono cable with connectors on both sides. So I had to take of the connectors on one side to solder it to the record player. I am not the best at soldering but it wasn't shorting or anything. Any one know why this ? I assume it's bad solder joints maybe ?
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