• 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

restoration

  1. Burialcloud

    SAE 2400L dc offset question along with recap, restoration tips and recommendations.

    I bought a SAE 2400L this week for 350. It was in “working” order but I figured it would probably need an overhaul before use. Got it on my bench today and channel B seems great. Was able to get the offset and quiescent dead on. (Don’t have a distortion analyzer to check bias unfortunately)...
  2. jFF_Bulbo

    2330b help!

    hello AK'ers I´m working on a 2330b. previously repaired without succes. power supply recapped, new transistors, new relay, single diodes an double diodes as well preamp, phono recapped power amp recaped BUT after changed capacitors, transitors, new mj´s 95/96 output.... one chanlles refuses...
    • jFF_Bulbo
    • Thread
    • 2330b dc offset help p700 q710 repir restoration upgrade
    • Replies: 10
    • Forum: Marantz Audio
  3. Leestereo

    Why does Leestereo insist on increasing power supply/decoupling capacitors?

    I often get asked why should one consider judicious increases to the capacity of a power supply. I typically respond as such: It can be argued that the power supply is in the signal path, it's essentially in series with the output stage and hence does impact the sound of an amplifier. Nelson...
  4. R

    Qualified Sansui Technician Please!

    Hello AK people!, I just picked up a Sansui 1000a in pretty good condition, however I do not want to even attempt to power it up, as Ive read some horror stories on this and other sites, so Im looking for a qualified technician in the So-Cal area, as Im trying to avoid shipping, for obvious...
  5. jFF_Bulbo

    Marantz 4430 FM..... help!

    Hello AK'ers I keep working on 4430, once it was repaired, i have no sound on FM right speakers..... I've tested and checked all the wires on input selector, pin by pin on each wafer it was bad worked previously, soldering wires on wrong pins..... What i´ve done: I conect a wire from J313 TO...
    • jFF_Bulbo
    • Thread
    • 4430 fm help marnatz quadrial radio repair repar restoration
    • Replies: 14
    • Forum: Marantz Audio
  6. PJuddery

    Sansui 6060 Left Channel Speaker Pops Advice Needed Please

    Hi All, I've got a Sansui 6060 that I'm in the process of restoring. When I bought it, the left channel was a mess. It had almost nothing but distortion/ static, that was independent of the volume control position or the use of any other controls. The right channel was also rather...
  7. Will_Emanuel

    Another AU-20000 Restoration

    Hello all, The time is come for me to document a complete restoration I recently finished on an AU-20000. I first want to thank @mattsd for his restoration thread, as I used that as a baseline when starting this restoration. I was unable to find a single complete BOM for the unit on AK, so I...
  8. C

    Replacement Parts

    Where do you find is a good online resource for replacement parts? I have a ‘77 JVC receiver that is missing the correct knob for the on/off switch. I have checked eBay and googled the part by part number, etc. What is my best option for getting replacements for model specific parts?
    • CS Borger
    • Thread
    • knobs parts repair replacement part restoration
    • Replies: 6
    • Forum: DIY
  9. Timothy Flath

    Nakamichi 630 Preamp/Tuner Restoration Project from Vintage System One

    Hello all. I noted there is really not much info out there on attempted restorations of the Nakamichi System One components. Thought I would start with the Nakamichi 630 combined Preamp/Tuner component. I recently aquired this system in trade for an amp I built and am tickled pink with how cool...
    • Timothy Flath
    • Thread
    • 630 nakamichi nakamichi 630 preamp recap restoration system one tuner
    • Replies: 4
    • Forum: DIY
  10. allhartfidelity

    HF-89 restored.

    Ive got many amps, but recently had this one gone through. All hardware replaced with stailess, pots, controls ect. Rear pannel reconfigured happy days. Updated feedback loop ect.
  11. angelaudio

    Wharfedale Super 3 Tweeter Restoration

    I’m restoring a Wharfedale 3-way system and the Super 3’s are next up in line for restoration. I was able to restore a pair of W15FS’s to working condition with the help of @klipschorn and now I’m documenting the restoration of the super 3’s. I have a pair of the Super 3’s but they are slightly...
    • angelaudio
    • Thread
    • restoration super 3 wharfedale
    • Replies: 17
    • Forum: Speakers
  12. cbusuttil

    Marantz 1180DC restoration

    Hello! I thought i d share my ongoing restoration on this wonderful integrated amp. First impressions; quite modular and easy to work on since many of the modules are plug-in! the amp is in decent shape apart from the bass and balance sliders which at some point snapped and have the metal part...
    • cbusuttil
    • Thread
    • 1180dc 1978 marantz marantz 1180dc restoration restoration vintage
    • Replies: 102
    • Forum: Marantz Audio
  13. scootsity5

    Rubber mat cleaning

    Hello all The most comprehensive thread I've found discussing how to best clean and restore ancient rubber turntable mats is now over a decade old. So, I thought it might be a good idea to discuss it in a new thread, and to see if anyone had new advice. The prevailing wisdom in 2011 was cover...
  14. richiem46

    Harman Kardon TA260 Restoration Begun

    I have seen several Harman Kardon TA260 receivers for sale and it looked like an interesting receiver. I was tempted to obtain one but didn't want to overspend on one as all my experience is with Fisher amps and receivers. I saw this one on the big auction site and the faceplate looked to be...
    • richiem46
    • Thread
    • harman kardon restoration ta-260 ta260
    • Replies: 14
    • Forum: Tube Audio
  15. goldswimmerb

    Tackling a Beast (KR-9600)

    Currently working on a KR-9600, going to the mod for saving the power switch with a triac once I get it sorted out. On arrival there was no relay click, chased down to a bad power supply transistor. Following that the relay clicked in and FM at least started to show tuning. Now what I am seeing...
  16. PROJECT 2501

    Model 32 amplifier with 100mv DC offset in the right channel

    Left channel is steady at 35mv Right channel went from 75mv to 98mv Right channel produces a disgusting buzz/humm through the right speaker that is constant no matter the amount of attenuation. Needless to say that it's in need of repair, that's a given. I'd just like to know if these...
    • PROJECT 2501
    • Thread
    • amplifer bias dc offset magic smoke marantz model 32 recap repair restoration
    • Replies: 2
    • Forum: Marantz Audio
  17. Zether

    A couple of Technics SU-V8

    Hi all, I have been listening music so far using a Naim NAIT 5i with Dali Oberon 7 speakers, but found this combination to be lacking in the low end so went on a quest to find a "new" amplifier which would hopefully be able to drive the speakers better. Due to the environment I have been raised...
    • Zether
    • Thread
    • amplifier restoration su-v8 technics
    • Replies: 36
    • Forum: Solid State
  18. Aaron Brown

    Question about veneering a plinth

    I was always told ,that If you want to learn to do something, you have to start somewhere. So here I am!! Diving in and doing some due diligence.... I'm going to try doing a veneer job on a Pioneer PL 516....I have an extra plinth that I picked up from a wrecked unit. I currently listen to a PL...
  19. KNielsen

    Aragon 4004 converted to MK.ll and maybe other mods

    Hey AK. I want to share this project as this might inspire others to either restore or make the fully rebuild. It should be mentioned that the Aragon 4004 in this thread is built by request, soo..... -some parts cannot be selected otherwise, as this is a request by the customer. The most...
    • KNielsen
    • Thread
    • 4004 4004mk.ii 4004mk.ll amplifier aragon aragon 4004 aragon 4004mk.ll mod modification restoration
    • Replies: 77
    • Forum: DIY
  20. 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
  21. Super Noob

    Project: Kenwood KA-3500 (Nate Dogg)

    Well - here goes another rebuild thread. In the last month or so, I succumbed to pressure applied from that other person living in my house. I listed a few of my pieces for sale locally on my wifey's face space marketplace. Needless to say, we didn't get much interest in the pieces listed...
  22. adgreen

    Acoustic Research AR-4x Restoration

    Hi all, I just picked up a set of Acoustic Research AR-4x's for $75. Plugged them in and they're sounding pretty muffled. I don't have any experience restoring speakers but have found a fair bit of info on this forum and want to make sure I'm understanding everything correctly before I purchase...
    • adgreen
    • Thread
    • acoustic research acoustic research ar 4x ar 4x restoration
    • Replies: 18
    • Forum: Speakers
  23. Tyler Prock

    Restore the current veneer? Or apply new veneer?

    I have had a pair of cornwall 1 and was curious if your thoughts on repairing the current veneer or replacing it. It’s damn sure not terrible a fe small chips here and there and all around pretty solid just scuffs here and there. Just wanted to hear some thoughts on it! Thanks
  24. Will_Emanuel

    Yet Another SX-1050 Restoration

    Hello all, I have just wrapped up a major restoration on a newly acquired SX-1050 that had a very rough past to me and had arrived in very rough shape. The unit had been sitting in the attic of a small stereo shop near my university for nearly 27 years, according to the repair tag's date of...
  25. Hyperion

    AU-D907 for restoration

    This is my latest on the bench for restoration, it has a few problems - just the normal stuff that's pretty much expected with a unit of this age. It's new owner tried it out and found that one channel was not sounding good. The technician who had it first corrected a protection issue, but...
Back
Top Bottom