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recap

  1. Aud10file

    Sansui AU-919 Restoration

    A few months ago, @Vintagear pinged me, regarding an AU-919 on CL that looked amazing in the pictures. He knew I’d been looking for a good condition 919 for a long time. We immediately sped to the seller’s location. I drove and @Vintagear held on for dear life. LOL. The seller was an older...
  2. S

    Realistic Nova-15 Recap

    Hi, I scored on some Realistic Minimus 26 in mint condition, the sound output is amazing, mids and lows sound crisp, a bass is punchy enough for yard sale find... This inspired me to buy a pair of Realistic Nova-15, I have done my research on RS's Realistic line and I love the vintage vibe...
    • Sweet Al
    • Thread
    • crossover crossover capacitor realistic realistic nova 15 recap
    • Replies: 0
    • Forum: Speakers
  3. 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)...
  4. GeorgiV

    Technics SU-VZ220 missing trebles after recap

    Hi guys, I recently bought this SU-VZ220 from ebay and after I played with it for a while my next step was to do a full recap on all electrolytic capacitors. Since then I have that strange feeling that trebles are not as sharp as before (or I might be wrong and everything is just an...
    • GeorgiV
    • Thread
    • frequency response recap treble
    • Replies: 1
    • Forum: Solid State
  5. Super Noob

    Project: Kenwood Super Eleven

    Am still keeping the solder flowing... however, am not documenting as much anymore. Am busy with work and life, but I picked up a monster locally a few months back. Paying up is just what you have do nowadays. I have plenty of Kenwood gear: 8050, 8010, 9G, 8100... and have spend time redoing...
  6. P

    Marantz PM550 DC - Restoration advice desperately needed on "where to next"?

    Hi team So I posted a few months back when I found this great looking Marantz amp online https://audiokarma.org/forums/index.php?threads/marantz-pm-550dc-sound-output-distortion.985180/ From that thread I had posted... "The main issue is the sound output. At a low volume there is a distortion...
  7. bzenic

    SX-650: 3-4 s of Playback and 3-4 s Of Hum

    After I recapped the tone board and recapped and replaced all transistors on the vertical amp board (except the two on the heat sinks) I get only periodic playback of about 3-4 s and then the period of hum. This same sequence repeats on and on...you got the picture. What would be the most...
  8. Krosya

    Klipsch KG4 - Legend continues

    I have been a big fan of Klipsch speakers for a while. I prefer older models/Heritage line. Absolutely adore my Heresy III. speakers. But also own a couple more - KG 4.5 and KG4. KG4 has always been one of the favorite speakers. They were , actually, ones that got me started with the whole...
    • Krosya
    • Thread
    • audyn kg4 klipsch recap
    • Replies: 17
    • Forum: Speakers
  9. EnzoFerenzo

    Marantz 2238b with right channel distortion

    Hello to all in the forum from a new member. I am a former Nortel tech and worked at several PC board manufacturers as an SMT rework and solderer with microscopes. Now retired I keep myself busy fixing anything I can get my hands on LOL. Recently I was given an old Marzantz 2238b to fix and...
  10. Yemm66

    Denon DRA-825R AV Receiver

    Ran into this capacitor today. Never seen one before. Can anyone tell me what it is? It says 22 mf 5.5v "SB" on the label What type of capacitor can you use in it's place? It's kinda big for it's small value. Thanks for the help. It wouldn't show any value on my meter either. It is a cheap...
  11. 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...
  12. zombiemodern

    SL-1200 MK1 Woes (Negative Voltage at TR-14 collector)

    Hi AK, Was wondering if anyone here could help with an SL-1200mk1 that's seeing speed irregularity, particularly on power cycles. This is now a DIY project — a third turntable I don't really need but due to the rarity I'd love for it to operate properly. I've taken this to a local tech figuring...
    • zombiemodern
    • Thread
    • direct drive help mk1 recap repair sl-1200 sl-1200 mk1 technics transistor
    • Replies: 17
    • Forum: Turntables
  13. JK-47

    Pioneer PL-7 (mid-60's) Motor start capacitor help, please.

    Hello, I'm a new member. I recently took in what appears to be a very early Pioneer PL7, The tone arm is an unusual replacement. There is no model number on it. As a whole it seems to be extremely clean and restorable. The problem, is the motor. When switched on, the motor has a slight...
    • JK-47
    • Thread
    • early pioneer turntable motor start capacitor pioneer pl-7 recap
    • Replies: 4
    • Forum: Turntables
  14. 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
  15. Refugee

    MC2105 restore to former glory / parts list

    MC2105 restore to former glory / parts list I finally decided to restore my beloved MC2105. I am a hobbyist, not an engineer so my thoughts on circuit theory are to be taken with a grain of salt. That being said: I do have some insights that may help people that don’t do this work every day...
    • Refugee
    • Thread
    • 2100 2105 diy mc-2105 mc2100 mc2105 parts list re cap recap restore
    • Replies: 11
    • Forum: McIntosh Audio
  16. tusntuk2

    HELP! Can't set BIAS on Kenwood KA-3500

    Greetings fellow Ak'ers! This puzzle has me stumped - any good puzzle solvers out there wanna try it? I have rebuilt a Kenwood KA-3500 amp with a full recap, many transistors, resistors and diodes, and new Bournes trimmers, too. This is my 12th recap of this model, but I'm stumped. The Left...
  17. T

    Bringing a NAD C352 back to life.

    I had been suffering the erratic performance of my NAD C352 amp for about a year until it died, so I finally decided to open it up recently to see what I might be able to do to improve things. What I found was very similar to the discoveries in this post...
  18. A

    HK 330a, 430 Twin Powered

    Hi Everyone, hoping you can help. I’ve got an HK 330a and a 430 Twin Powered receiver and both have a channel that went silent. Before that they sounded beautifully. I’ve never opened up a receiver and switched out caps before, and I’m thinking it would be better to let a pro do it. (I’ve...
    • awat
    • Thread
    • 330a 430 twin powered harman kardon recap receiver
    • Replies: 7
    • Forum: Solid State
  19. 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
  20. Mrcoolest123

    Pioneer sx 3600 eletronics replacements.

    Good day everyone! This is my second time asking for guidance on the forum, and I hope you all can help me to some degree. My pioneer sx 3600 receiver is having problems. The phono left channel is dead, and my mono switch is broken. I suppose the problem lies on some capacitor or resistor...
    • Mrcoolest123
    • Thread
    • pioneeer pioneer sx 3600 recap recap and restoration receiover question sx 3600 vintage pioneer
    • Replies: 4
    • Forum: Tape
  21. D

    How to discharge stored energy

    Hello I would like to know the best way to discharge stored energy in a receiver before going in to replace capacitors. Thank you for your help.
  22. O

    Recap Advice

    Hello. I would like to ask your advice about the right model of Nichicon capacitor to renew my tuner. My question is the following. I would like to use the following type of Nichicon CAPs: UPW (alternatively UPM) for the Power Supply (filter caps after the rectifier bridge) UES for any...
    • orsib78
    • Thread
    • advice nichicon recap tuner
    • Replies: 6
    • Forum: DIY
  23. P

    Marantz PM 550DC - Sound/Output distortion?

    Hi everyone! I took a chance on an online auction in NZ for a Marantz PM 550DC Amp that was at a tipshop (like the recycling part of a rubbish dump) knowing that there probably was an issue. The unit's appearance is in great condition and I used Deoxit on the volume and balance knobs (the...
  24. 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...
  25. Oggioffshore

    NAD 3400 recap

    Hi. Looking to do a recap job on one of my3400's Anyone done this? And what was the outcome, improved sound? I'm rusty in reading schematics, but guess you just change the capacitors along the signal way with same values... Just think after 30 "years, it can't harm. Cheers
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