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recapping

  1. S

    Marantz 3250b left channel cutting out

    I have a rack consisting of a marantz 3250b and 300dc, and the left channel cuts out. It goes silent while the right continues to play music, until I turn off the speakers, max out the volume until the vu meter starts showing something, lower it again, and turn the speakers back on. Doing this...
    • sarris28
    • Thread
    • marantz marantz 3250b recapping relay repair advice repair advice help needed restoration help restoration novice restoration or repair? restoration project
    • Replies: 14
    • Forum: Solid State
  2. C

    Need help repairing HK 330C

    HI Everyone, I am new to this group and new to the world of vintage audio upgrade and repair. Not an EE but strong technical background in other disciplines so I can usually figure things out with some reading and support. I have gotten reasonably comfortable with speaker crossover upgrades...
  3. B

    Need Help Identifying Thos

    I received such great advice on my last post, I figured I’d try this on y’all. Can anyone identify what this is? It’s feels like ceramic but the markings show are all it has. This place is great. I owe you guys a beer.
    • BuffaloJeff
    • Thread
    • capacitor component identification emerson recapping resistor vintage audio
    • Replies: 1
    • Forum: DIY
  4. NickDeO

    KLH Model One & Janszen Model 130 (Recap/Restoration Help)

    Hello AK, This has been discussed before by other members in similar situations, but I felt that due to the rarity of these speakers and the number of differences between varying serial numbers, a separate post might better help others in the future. BACKGROUND: *Feel free to skip if you’re...
    • NickDeO
    • Thread
    • janszen klh klh model one kloss model 130 model one recapping restoration sealing surrounds
    • Replies: 32
    • Forum: Speakers
  5. 98%chimp

    We're all in agreement that recapping is good, right? AU-D11

    So I've been thinking of doing a a recap for my AU-D11, it sounds amazing but is full of black flags and has an electrical smell (for other D11 owners: is that normal? My D9 produces no smell whatsoever). Anyways as the date of parting with the amp approaches I've found myself having second...
  6. tusntuk2

    Could use some help on a +B Power Supply problem in a Kenwood KR-5600

    I'm restoring a Kenwood KR-5600 that was in working condition, at least I know the FM and the Tape inputs were working, and I started with the power supply. The KR-5600 has a history of heat problems with its design, so I boosted the clumped resistors to 3 watts and the caps to UPW 100/50v...
  7. tusntuk2

    Could use some help on a +B puzzle in a Kenwood KR-5600

    I'm restoring a Kenwood KR-5600 that was in working condition, at least I know the FM and the Tape inputs were working, and I started with the power supply. The KR-5600 has a history of heat problems with its design, so I boosted the clumped resistors to 3 watts and the caps to UPW 100/50v...
    • tusntuk2
    • Thread
    • 2630-10 fm muting kenwood kr-5600 phono ic's power supply rails recapping
    • Replies: 3
    • Forum: Solid State
  8. E

    Should I stay or should I go now? (Pioneer vs Luxman)

    I have a Pioneer SX-880. It was bought a year ago for $125. It needed some repairs which cost about $225. There was no recapping of any sort, just a bad channel. I also have a Luxman R-115 a friend will sell me for $200 with remote. I have been using the Luxman for over a year (nice friend) and...
  9. jfouch59

    AU-717 rebuild recommendations

    Good Afternoon. I am looking for recommendations on a rebuild/restore service for my AU-717 amp. I bought this system when I was in the Air Force back in the late 70’s. I did a short tour in Korea and like a lot of other service guys back then, we all got big stereos for our rooms. I picked up...
  10. R

    How to access caps on EPICURE Model Fourteen (14)

    Trying to find a replacement tweeter for these guys, and decided it was a good time to re-cap. Problem is the circuit board (on which I assume the caps are located) is inside the front baffle, and for the life of me, I can't figure out how to access it. There must be a trick, right? Anyone have...
    • robback
    • Thread
    • epi epicure model fourteen recapping tweeter
    • Replies: 6
    • Forum: Speakers
  11. Mat86

    Best caps to replace with?

    So I have a headphone tube amp I've been tweaking and noticed 4 of the 6 larger electrolytic caps were bloating. It's about 12 years old now and comes stock with Rubycon 470uF 250Vs. While I'm sure I can get away with just leaving it a few more years, many recommend recapping after 10 years or...
    • Mat86
    • Thread
    • capacitors recapping
    • Replies: 14
    • Forum: DIY
  12. dlucy

    dlucy's Kenwood KR-5030 stereo receiver recap and restore

    A good friend has lost his mind and decided to try his hand at restoring vintage stereos... and this is what I showed him what to do... to recap and restore the Kenwood KR-5030 stereo receiver he found, for cheap, at the local used record store. And his pictures after he cleaned it up and...
  13. yosl

    Do Darlington Power Packs Age?

    The full question is, "do Darlington Power Packs Age like dedicated output sections"? I have a JVC JR-S201 with dual darlington power packs in the output stage (one per channel). I've owned the S-201 since new (1978) and it was doing yeoman duty with one of my sons in his stereo set-up. Went...
    • yosl
    • Thread
    • darlington power pack recapping refurbishing
    • Replies: 9
    • Forum: Solid State
  14. S

    Is it necessary to adjust the bias after replacing filter caps?

    I'm currently rocking a Pioneer SX-50, which works and sounds great. It's almost 40 years old, and I'm wanting to replace the filter caps just for reliability reasons. I have a pair of Nichicon's coming in next week, and I've heard about AK'ers adjusting their bias after a recap. Should I be...
  15. S

    Replacing two 37 year old filter caps; where do I start?

    Please excuse my ignorance, I'm new to the world of recapping vintage receivers. I have an original Pioneer SX-50 that's getting up there in age, and I'd like to start by replacing the main filter caps for good measure. They're a pair of Nichicon 8200uf 50v caps with an 85c rating. What would be...
    • Saffire
    • Thread
    • capacitor pioneer recapping restoration
    • Replies: 22
    • Forum: DIY
  16. dlucy

    Harman Kardon 330A recapping

    Just to keep everyone guessing, I only replaced the electrolytic caps in this Harman Kardon 330A instead of replacing everything I could desolder. ;) For those of you who just want to do a minimal recap and you have the matching 330A, then this thread should help find the right parts to return...
    • dlucy
    • Thread
    • 330a harman kardon harman kardon 330a hk hk 330a recap recap list recapping
    • Replies: 24
    • Forum: Solid State
  17. dlucy

    Recapping and restoring and upgrading a Heathkit AR-1515 receiver

    One of our outstanding local AK'ers, @nj pheonix , asked me to recap and restore his monster-of-a-receiver Heathkit AR-1515. It is quite a beast, lots of power, an unusual design (on the inside), has the rare Dolby FM card, and was a lot of fun (read as "learning experience") to work on. This...
    • dlucy
    • Thread
    • heathkit heathkit aa-1515 heathkit ar-1515 recap recapping restoration
    • Replies: 200
    • Forum: Solid State
  18. dlucy

    Recapping and repairing a Harman Kardon 730 twin power series stereo receiver

    @sfox52 asked me to recap his hk 730 twin series and since finishing that last week, someone else is asking for the recap BOM, so I'm posting that part quickly here and I'll fill in the details and the input-panel-repair and ps-for-LED-pointer-replacement goodies when I have more time. Index to...
    • dlucy
    • Thread
    • bom harman kardon 730 hk730 recap recapping
    • Replies: 349
    • Forum: Solid State
  19. dlucy

    Recapping a Yamaha PX-3 linear tracking turntable

    @BillWojo has this really smart perspective on his favorite vintage gear: "if it has proprietary or unobtanium parts, insure it by recapping as quick as possible"... or something like that. He asked me to do a quick recap on his Yamaha PX-3 linear turntable and it went pretty well... with only...
    • dlucy
    • Thread
    • linear tracking recapping turntable yamaha yamaha px-3
    • Replies: 41
    • Forum: Turntables
  20. E

    To re-cap or not to re-cap Denon DP-47f.

    So I got my hands on a DP-47f back in september as a birthday present. I had to chase it down since turntables are very expensive here in Argentina, and, since this is a somewhat hifi and rare model, more so. The deck itself has only cosmetic damage (ie: Some minor scratches here and there, and...
  21. dingo1670

    MC240 Restoration

    Hello Fellow McIntosh fanatics! I am currently working on Restoring my first MC240. I have already gone through the PS Section and am currently measuring all of the Carbon Comp resistors and Capacitors. There is some debate o whether to leave the Red Lettered .22uf 600V Black Beauties in or not...
  22. H

    McIntosh MC60 Circuit Differences / Restoration

    I am recapping a pair of MC60 amps for a friend and the serial numbers are 3XXX and 7XXX there are lots of differences between these two amps. The board layout is completely different and the bias section is different as well. The first amp I replaced the selenium rectifier with silicon and...
    • Hi-FiGuy
    • Thread
    • bias m-171a transformer mc60 mcintosh recapping restoration
    • Replies: 2
    • Forum: McIntosh Audio
  23. rmunson

    desoldering pcb tips

    Hi folks - I'm preparing to do my first recap and I would appreciate any tips on desoldering the old caps from the pcb boards - I'll be working on an old magnavox solid state receiver. questions: When removing the caps, will I just heat each lead and wiggle it out of the pcb hole? Does it take...
    • rmunson
    • Thread
    • desoldering pcb recapping
    • Replies: 38
    • Forum: DIY
  24. davstev

    Post-Recap: What follows?

    So, recapping. It's often advised for old gear, for obvious reasons. I've done it before, to varying results, mostly good. I am good with the careful selection and replacement of caps, but I lack the knowledge of the principles of electrical circuitry and amplification that will ensure that I...
  25. TellMeWhy

    Marantz 2270 uneven phono sound....

    Dear All, I have a recently required 2270 that has been "almost entirely recapped" by it's previous owner, who claimed to be an electronic tech. Certainly the main power caps are indeed new, I didn't take it apart in detail to find out more.... On line and tape inputs (incl digital sources) it...
    • TellMeWhy
    • Thread
    • marantz 2270 nagaoka mp110 phono board recapping thorens td160
    • Replies: 2
    • Forum: Marantz Audio
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