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restoration

  1. akadrhouse

    Marantz 2330 Rebuild

    I've rebuilt a half dozen smaller Marantz and Sansui now and decided to rebuild a 2330. I have been using information on http://marantzhallo-fi.blogspot.com/2014/12/marantz-2330-receiver.html and what I can glean from AK posts. I started with the P400 board Left is original, Right is after...
  2. K

    This KENWOOD KA-907 needs total overhaul!

    I bought a Trio KA-9900 and when it failed, I sent someone to get me a KA-907. The idea was to use the KA-907 as a mirror image to restore the KA-9900. Here is the story of the KA-9900...
  3. K

    This TRIO-KA 9900 has been sleeping for 10 years! Let's wake her up!!

    Lost the right channel in January 2010. I was so traumatized, I just stopped using it. I wanted access to all the power or none at all. I have never listened to anything that sounded half as good. So I put it in storage pending when I could restore it. Then I bought a KA-907 that turned out...
  4. K

    Sony STR-7065--PCB char-is it a make or break issue?

    All, New here and newbie to repair. Stick with description please! I picked up an 7065. Did some cleaning and inspection. Several caps seem new? Speaker B and C channels right, sometimes left were not working. Speaker A seemed to be OK. I noticed up near speaker inputs on supply board there...
  5. Sergimm

    C0G vs normal ceramic caps

    Hi, I've seen several restorations (especially in some of Leestereo's) in which they replace traditional ceramic caps with a C0G version with the same properties. Apparently C0G caps are less noisy and better in almost every aspect. What I haven't been able to find out is whether there is a...
  6. FireGuruMN

    Magnepan MGII Repair/Restore, Glue, Glue and more Glue

    I bought a pair of MGII last fall on CL for $200.00 with known issues. They sat around during the winter because there was no way quality control would allow stinky glue in the house. I once finished off an entire office with Victorian woodwork, built in shelves, wood ceiling and did all the...
    • FireGuruMN
    • Thread
    • capacitor crossover delamination finishing glue magnepan mg2 mgii restoration stands
    • Replies: 21
    • Forum: Speakers
  7. allhartfidelity

    Remanufactured Pioneer power supplies 1980 and...SA9800

    Pioneer hot power supplies that have been toasted. A while back I got one for my 1980, and there were a couple different manufacturers. I asked a couple of the well known rebuild guys and the new supplies seemed to be deemed a viable alternative. Updated parts, and in the case of my 1980 moving...
  8. T

    Marantz 2500 replacement capacitor list spreadsheet for Mouser

    Hello. As part of my restoration and on the advice of enough members, I decided to use Mouser.ca (for those who do not live in the Great White North, Mouser.com exists, too) as my source of components for the task. At the same time, it was obvious that some resistors and a few other components...
    • TJacques
    • Thread
    • marantz 2500 marantz 2500 restoration marantz restoration restoration restoration project restoration thread
    • Replies: 8
    • Forum: Marantz Audio
  9. klamsoss

    EICO 377 signal gen restoration

    I'm still new-ish to working on gear and learn more with each piece that I work on. As such, I've picked up pieces of classic-era test gear with the intent of gaining knowledge through restoration. I paid $20 at an estate for a box full of an Eico 377 Audio Gen, a model 232 VTVM, and a model...
    • klamsoss
    • Thread
    • eico eico 377 restoration signal generator
    • Replies: 2
    • Forum: Eico Place
  10. FireGuruMN

    Sansui SM-80 Monster Amplifier from the 60's

    I'm going to be restoring a Sansui SM-80 that appears to be in all original condition and apparently was working when I bought it. I am just going through and lining up my first parts order but I was having trouble finding any schematics on the interweb. But low and behold Sansui included a...
  11. FireGuruMN

    Polk Monitor 10 Capacitor Replacement

    I got this pair of of Polk Monitor 10's on CL for $50.00 plus a rather long drive. But it was Fall and long drives are nice along the river in the Minnesota Fall. I was sort of just after the stands. But I got them home and thought the drivers looked a whole lot like the drivers in my...
    • FireGuruMN
    • Thread
    • crossover monitor 10 polk rdo194 recap restoration sl2000 wire bending took
    • Replies: 5
    • Forum: Speakers
  12. S

    repair advise wanted

    I have a Sansui G9000 and 9090DB both inoperable at the moment and I would like to have them repaired. I am located in Michigan on the west side of the state near Holland. If anyone knows of a repair shop that can be trusted please advise. I am not adverse to shipping these but would prefer...
  13. rolleiman

    Sherwood S-5500 Restorations

    Hi Team, Just purchased a Sherwood S-5500 II (7591 Tubes) and plan to restore it but have been staring at it for a week or two and not quite sure where to begin. What I have done and observed so far: - I brought the unit up very slowly without the output tubes to ensure electrolytic got...
    • rolleiman
    • Thread
    • need help recap restoration s-5000ii s-5500 sherwood tube amp
    • Replies: 60
    • Forum: Tube Audio
  14. AshhBoy_

    dbx-Bx3 MkI restoration (noise and some channels not turning fully on)

    Hi, first of all, I'd like to mention that I'm new to audio stuff and this forum. My father bought a dbx-Bx3 power amp back in 1986 when he was living in Japan. Since it is the domestic version, it doesn't have an input selector for the mains voltage, nor a switch for the load impedance... The...
    • AshhBoy_
    • Thread
    • amplifer dbx bx-3 lamps output relay restoration
    • Replies: 6
    • Forum: Solid State
  15. goldswimmerb

    McIntosh 250 buzzing/oscillating

    Hey guys, so I have an MC250 on my bench that emits a terrible buzzing sound out of one channel. It was brought to me as it allegedly had bad Capacitors, so I went through and Recapped it to no improvement. After the recap I noticed that once channel would occasionally oscillate and had what...
  16. J

    Dynaco ST70 Abbreviated Restoration video

    Here is the non-technical artistic version of the ST-70 amplifier restoration video for all to enjoy edited from the several full length videos that made up the original restoration. I make several of such videos a year for larger projects.
    • JRUBIN
    • Thread
    • dyna dynaco restoration st70
    • Replies: 0
    • Forum: Tube Audio
  17. Connor G

    Kenwood L-07M Restoration (1)

    Hey all, I figured I would post some updates on the restoration of my L-07M monoblocks. When I first got the L-07M's, I used them on and off for a few months before getting them serviced by my tech in MA. Apparently, he only replaced the capacitors that measured out of spec. They have been...
  18. Sandpaper7

    Allison Five - Great little speakers

    l purchased a pair of Allison Fives online a few months back and am completely blown away by the sound that comes out of these little boxes. I listened to a bunch of "bookshelf" speakers prior to buying the Allison Fives and wasn't satisfied with any of them. I live in Tasmania, a small island...
    • Sandpaper7
    • Thread
    • allison allison 5 allison acoustics allison five restoration
    • Replies: 32
    • Forum: Speakers
  19. NickDeO

    Help me restore my grandfather's beloved SX-770!

    Hello AK! I'm a first-time poster, but long-time reader. I'm 20 years old and quite into vintage stereo equipment. After successfully recapping my JVC Ja-S22, my grandfather asked me to take a look at his old Pioneer receiver that he purchased back in 1970 while he was stationed in Germany...
    • NickDeO
    • Thread
    • help pioneer recap recap list request restoration sx-770
    • Replies: 72
    • Forum: Pioneer Audio
  20. doodahman

    Dual resources (getting started with repairs)

    Dual 1242 before any work done... Hi, I know there's large presence here of Dual enthusiasts. I just picked up my first Dual -- a 1242. Not the most collectible, but hey, it was free! I did some electronics hobby work back in the day (40 years ago), so I at least know a capacitor from a...
  21. D

    Sansui eight capacitor/trimmer/transistor list?

    Hi Everyone, This is my first post on in the forum. I am now the proud owner if a Sansui Eight and would like to recap the unit. I've seen that changing out the trimmers and transistors are also suggested. Does anyone have a parts list that they would be willing to share? I noticed that the...
  22. goldswimmerb

    CR-2020 help needed

    Hey guys, so I am currently working on a CR-2020, doing a recap and preemptively replacing "known to fail" tranistors. So far I've done the preamp and both power supply boards. On completion of the power supply boards I now have a very loud Hum/Buzzing from my amp boards, this occurs...
  23. klamsoss

    1060 rebuild on deck

    Good afternoon AKers! I've got a 1060 on deck for a rebuild. It hasn't been powered up in a couple years and the glue on the boards has corroded most of the caps pretty well. Nothing has been touched in the power supply since it was manufactured, so it's long overdue for some attention. I've...
    • klamsoss
    • Thread
    • 1060 capacitors diodes marantz marantz 1060 restoration
    • Replies: 43
    • Forum: Marantz Audio
  24. morfeora

    Kenwood KA-907 where to find original T03s and other questions (big restoration here)

    Hello to all, I have been building my system since I first restored my first HIFI speaker here in AK 3 years ago. Since then, I found some Kenwoods amps in my hometown (Medellín, Colombia), and I have started to collect and slowly restore them. So far, 3x KA-7100 and 1x KA-3500 are in my sweet...
  25. DubHead

    HK 330c Restoration in Western MA

    I have a Harmon Kardon 330c that I am considering having restored. I can’t do this work myself and need a recommendation for a tech in Western Massachusetts. Any help is appreciated!
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