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restore

  1. J

    Carvin Pro Bass 200 Amp and Cabinet - Repair + Extreme Make-over

    This Amp was gifted to me from someone in the community as a non-working device in need of both electronic and cosmetic repair. We can hear in the initial test that the amp barely operates, albeit, it does. We will remove the amp from the cabinet and have a closer look. It would seem that...
    • JRUBIN
    • Thread
    • carvin pro bass 200 repair restore
    • Replies: 0
    • Forum: Solid State
  2. jFF_Bulbo

    Marantz 2270. Low bias.

    Hello AK'ers. I retored my 2270. SN 38510. BASES ON THE SUPER POST from @Leestereo and recently @Super Noob . All is fine except LEFT amplifier ( P750, LEFT) After all the new parts installed, BIAS is about 2.1-2.3 mV, i know it should be 10mV. I changed diff transistors, pre drivers...
  3. P

    Restoring and Cleaning Amplifier Internals

    I've come across a Pioneer SA-510 that was kept in the garage as an amplifier. It started "acting weird" so it was given to me. I respect the vintage tech, and want to bring this thing back to life for normal use in a cared for environment. It's got 2 problems. It is oxidized inside. Rusted on...
    • pkalder
    • Thread
    • alcohol amp amplifier board circuit boards cleaning oxidation pcb restore vintage
    • Replies: 33
    • Forum: DIY
  4. absynth

    Realistic 909 FF/RW gear rubber liquefied!, how to clean, replace?

    Hi there, so I have recently gotten my hands on a well cared for Realistic 909 Reel to Reel. It worked great when I tested it out at their house. It played, it recorded, it FF and RW.. Then I got it home and it was fine for maybe 10min and before I knew it the FF and RW feature began to...
    • absynth
    • Thread
    • 909 liquid liquid rubber realistic reel to reel restore rubber
    • Replies: 4
    • Forum: Tape
  5. goldswimmerb

    250M replacement transistors

    Hey guys, I recently aquired a 250M with 1 blown output, which took out the corresponding predriver transistor as well as an exploded 2N4125 transistor. What are the recommended replacement transistors?
  6. goldswimmerb

    Marantz 250M help

    Hey guys, I recently acquired a working Marantz 250M, it appears to ll be original, I would like to upgrade it as per the service bulletins. What is recommended to make this amplifier more stable, as I have heard of the 250s being "conditionally stable". This unit appears to be a later model as...
  7. GabeD

    ESS AMT-1 Tower Restoration

    Hi all, My first post here! I have been lurking for many years though. I inherited a pair of ESS AMT-1 Towers from my dad. Over the years he had an enormous speaker collection that was constantly in flux. Advent, Altec, JBL, Bozak, ESS, Bose, EPI, Ohm, AR, Sansui, Pioneer, Tannoy, Empire...
    • GabeD
    • Thread
    • amt amt-1 ess heil restoration restore tower
    • Replies: 110
    • Forum: Speakers
  8. A

    Short and sweet. STV-4H diode request

    hello. I’m sorry for dual posting my introduction and diode request a week or so ago. I’m not trying to cause any extra work on my behalf. I’m sorrry. I did get a whole lot more of a welcome than I ever expected. Thank you guys for that. Are there any 4H diodes for sale anymore? Im thinking...
    • Ashe
    • Thread
    • diode diodes pioneer restore spec spec 2 stv-4h
    • Replies: 3
    • Forum: Pioneer Audio
  9. jFF_Bulbo

    MARANTZ 2270. HELP

    Hello I recently tried to recap tonee board P450. Once i finished, the left channel sounds low and dirty. Unit was working fine before i Recap, so, i have done something wrong. To replace capacitors i installed MPK caps With Tha same values. I resolder and Soublette checked my work. Before...
    • jFF_Bulbo
    • Thread
    • help marantz marantz 2270 recap restore vintage
    • Replies: 5
    • Forum: Marantz Audio
  10. R

    Need my 7T restored to sound better than new any recommendations?

    Just need some recommendations for a top notch 7T re-cap and anything else it might need replaced to bring that sound back, I can ship, no problem, top notch only please? Robert
  11. Aaron99

    Marantz 2265: Partial restoration. Distortion on left side. *Resolved

    I have a 2265 that has been sitting in the stack waiting its turn. I plan on restoring it to listen in my garage. Physical inspection looks good. All three tone pots are stuck. Powered up on DBT, the lights are very green, there is a slight hum. Left channel is distorted in speakers, not in...
    • Aaron99
    • Thread
    • 2265 distortion marantz recap restore troubleshoot
    • Replies: 10
    • Forum: Marantz Audio
  12. jFF_Bulbo

    Marantz 5220 deck, Help!

    Hello AK'ers I have a 5220 cassete deck, i bought it with boxes, manuals... it is in nice shape and it is functional, but when tape is playing, it stops and i really want to restore it. A technician came to my home to repair it, he applied isopropilic alcohol on pitch roller and rubber band on...
    • jFF_Bulbo
    • Thread
    • cassette deck marantz marantz 5220 repair restore tape vintage
    • Replies: 7
    • Forum: Marantz Audio
  13. Aaron99

    Marantz 5220 restore

    I'm working on restoring a Marantz 5220 cassette deck for my personal collection. I bought it from the auction site not working for parts... Cosmetically it seems to be in fairly good condition. The buttons depress and click like they are supposed to. So far so good. None of the ff/rw/play etc...
    • Aaron99
    • Thread
    • broken cassette marantz marantz 5220 restore
    • Replies: 6
    • Forum: Marantz Audio
  14. hopjohn

    The KA-2000 restoration

    Released in 1968, the KA-2000 is Kenwood's earliest, entry level, all solid state, integrated amplifier. The earliest versions of the KA-2000, as denoted in the brochure below, had two auxiliary inputs, later models have two phono inputs instead.
  15. L

    Heathkit AR-27 in KEFkit walnut veneer cabinet - advice please!

    My new favourite purchase by Lamo posted Nov 4, 2018 at 6:36 AM Hi folks, I've found this forum purposely as I seek advice. I went to a house clearance sale and purchased a gorgeous looking cabinet with an fm radio inside. I bought it simply because I can't bear the thought of lovely old...
    • Lamo
    • Thread
    • 1969 fm heathkit kefkit restore speakers vintage
    • Replies: 4
    • Forum: Solid State
  16. Mike Sweeney

    2230 done

    Finished :) This took some time with having to build a new bench and some other projects. All new caps.. ALL of them New micas for power transistors New power switch DeOxit scrubbing 1 shorted wire found and fixed New vellum new LEDs Wonky attenuator switch cleaned Faceplate scrubbed with...
  17. Mikethenewb

    Kenwood KR-77 with a weak left channel

    What would you recommend I do with a vintage Kenwood KR-77 with a weak left channel. Should I recap the entire unit? Is there another potential source for this problem that might not require an entire recap?
  18. J

    Rheem Roberts Reel to Reel Model 1725 Restoration

    While visiting my mother I came across her tape recorder that she got when she was in high school and decided that I would restore it as a side project. The challenge will be that I will have no tools or test equipment with me, I will only be able to order parts and steal what I can from my...
    • JRUBIN
    • Thread
    • 1725 akai reel to reel repair restoration restore rheem roberts
    • Replies: 0
    • Forum: Tube Audio
  19. M

    Infinity monitor Ia restore

    Hi all, I came into a pair of rough looking Infinity Monitor Ia speakers that I've been fixin' up. I wanted to share some of my results and maybe get some help along the way! I'm definitely not an Infinity guru by any stretch of imagination, but I thought this would be a cool project, and, given...
  20. J

    Fender Twin Reverb Amp - Repair and Restore

    Another Fender Tube AMP on the bench, this time a perfect condition Fender Twin Reverb. This amp seems to blow fuses when power is supplied, therefore ending up in my hands. Wow, quite amazing, I may be the first one in this amp, as it would seem. This however lends itself...
    • JRUBIN
    • Thread
    • fender fender twin reverb repair restore
    • Replies: 0
    • Forum: Tube Audio
  21. A

    KA 9100 repair options

    Hey Gang, I am brand new here so be gentle. I had a KA 7100 for many years and love the amp. My speakers (Cambridge Soundworks towers) seem to be power hungry. When the 7100 stopped working I bought a KA 9100 on ebay to use while the 7100 was going to be repaired. Fired up the 9100 and it...
  22. J

    Repair and restoration of a Heathkit IM-12 Distortion analyzer

    New project kickoff!!! This one is the repair and restoration of Heathkit's Harmonic Distortion Meter Model IM-12 (or IM58) going through the usual idiosyncrasies of Heathkit as I move along on this adventure to see if such a device can stand up to the likes of an HP 331A in the end. I realize...
    • JRUBIN
    • Thread
    • antique distortion analyzer heathkit heathkit im-12 heathkit im-58 heathkit im12 heathkit im58 repair restore vintage
    • Replies: 5
    • Forum: Test Equipment
  23. Golanr

    G-9000DB Distorted sound on left channel (Solved)

    I have this receiver for 6 years now and had no issues with it. Last week the left channel started sounding distorted, even on headphones only, which means this is happening prior to the amplifier side of the house. It starts getting distorted after 10-20 seconds. I did notice that without...
    • Golanr
    • Thread
    • 9000 driver f-2799 f-2806 f-2809 g-9000db recap restore solved speaker posts
    • Replies: 54
    • Forum: Exclusively Sansui
  24. DarkSaint

    Restoring my Sansui 8080 with pics!

    First of all I want to thank this site for helping me out bring back my Sansui 8080 to life. I was lucky enough to get it for free from someone who did not want it. When I first got it the tuner lights, 3/4 of the power lights, and the AUX light were out. After searching this site I managed to...
  25. Noel Bilbro

    Restore Marantz 2226B

    I reveived this Marantz 2226B for a good deal. I have decent enough experience soldering to PCB(making keyboards) so I think I could do a recap. I realize no one is going to hold my hand through the entire process but, I am quite lost when it comes to what brands/types to use for what and where...
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