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solid state

  1. T

    Technics SU-7100 Project - Need your help!

    Hello everyone, First off, I'd like to say that I love this forum. You seem to make everyone feel welcome, and the information on here is priceless. In a few days, I will be buying a Technics SU-7100 amplifier. According to the seller, it works great, except for the fact that one channel has...
    • twilliams
    • Thread
    • no sound solid state technics technics su-7100 transistor
    • Replies: 26
    • Forum: Solid State
  2. HowlerMonkey

    Cerwin Vega M-200, project, where to start?

    I finally may have bitten more than I can chew. Got a Cerwin Vega Metron M-200 project that will either make me or break me. I need a work bench and a scope, beer and a lot of help. I am in no hurry. (yet) Fuse was good, turned it on, made it past the protection click and the left meter lit up...
  3. Sci525

    Overhauled AU-101, right channel failed after 20 min

    Hi everyone, I overhauled my 1971 AU-101 yesterday. New electrolytic caps, small transistors, and power supply diodes (transistor substitutions below). Sounded good for 20 minutes before the right channel went out. Turned it off and back on and the right channel was on for 5 min before going...
  4. Kooranga

    Why am I underwhelmed by my MCS -> Yamaha receiver upgrade?

    You AK folks were a great help to me about 3 years ago when I was trying to put together my first turntable setup. After hitting up garage sales, estate sales, and thrift stores, I wound up with a combo that was by no means anaudiophile's dream, but still pleased my ears (I listen at moderate...
  5. artsybob

    TFM-300 Suddenly Stopped Working

    Last Spring I fixed up a TFM-300 tuner (replaced all electrolytic caps, had everything else tested) and for several months it worked perfectly with no incident. A couple of days ago while tuned into a station playing Christmas music the signal faded out and now I just get static. It doesn't pick...
    • artsybob
    • Thread
    • fisher hybrid solid state tfm-300 tube
    • Replies: 6
    • Forum: Fisher
  6. guy232

    Yam R-70 ('83) still sounds poor & imbalanced: voltages good after re-cap/reflows

    Service manual .pdf hosted: https://docdro.id/EbfVYvc I've been doing some work (details listed below) on my R-70 and learning quite a bit but it still sounds rather poor as it initially did, also the left channel is weaker. I've tested the device unloaded and all of the PS voltages are in...
    • guy232
    • Thread
    • 1980s advice imbalance r-100 r-70 r100 r70 repair solid state yamaha
    • Replies: 5
    • Forum: Yamaha
  7. guy232

    '83 Yamaha R-70 Restoration - Novice First Project

    R-70 Service Manual: https://docdro.id/P9uWhrM Started this project with zero experience with electronics/repair. Did research via google, youtube & forum searches and bought the tools i'd need to re-cap the entire main PCB on this unit. A majority of the caps showed signs of...
    • guy232
    • Thread
    • 1980s newbie project r-100 r-70 r70 solid state yamaha
    • Replies: 14
    • Forum: Solid State
  8. O

    Zenith x960 or Y960 or what? Can't find model number

    Hey there. New to this forum. I bought a Zenith 960 on Facebook last week and I am so excited. Its amazing and got a great deal. I've already cleaned her up a bit and replaced a few bulbs. Its so cool. I do have a couple issues though. One is that I can not for the life of me find the model...
    • Ohmboy
    • Thread
    • 960 solid state stereo console zenith
    • Replies: 11
    • Forum: Solid State
  9. N

    Marantz 2015 issues

    So earlier this week I replaced a bunch of old caps in my Marantz 2015 receiver to fix a buzzing in the right channel. The issue is gone and the unit sounds great. However I've had a Bluetooth connected to the Tape 2 input and never had any issues but now whenever it's connected, it plays...
    • NOMTW
    • Thread
    • marantz receiver repair solid state
    • Replies: 1
    • Forum: Solid State
  10. T

    SX1010 Crackling on Aux

    Hi Folks. I have an SX1010 that was 'refurbished' by an unnamed member of the forums who offered such services in PMs when I posted about failing transistor issues when I first purchased it a few years back. Long story short, it was a bad experience. It took them almost a year, they increased...
    • TimmahTao
    • Thread
    • 1010 cracking deoxit pioneer solid state sx 1010
    • Replies: 3
    • Forum: Pioneer Audio
  11. RogerMod

    Burning Amp 2018 is at Fort Mason , SF, CA 9/30

    http://www.burningamp.org/ Nelson Pass will be speaking on his latest Solid State efforts, as always. I will be speaking on tube applications in preamps and and "not in the book" power tube applications like the RM-10. Have a look at the webside and join us. Thats Sunday 9/30th
  12. C

    2 Rauland DSA 120 mono pa amps=?

    Hello to Audio Karma and the Solid State forum. A veteran member at the Tech Talk forum suggested that this would be a good place to ask some questions about a pair of amps I've had for several years. 2 Rauland Borg DSA 120 mono pa amps removed from a school when they updated. I'm told the...
  13. RogueRadio

    Standard Radio SR-1600 - Marantz - Info Appreciated

    So I've fallen in love with a strange receiver I can't seem to find any tangible info on. She's a keeper. Warm, rich, almost tube like sound. Haven't gotten her naked yet. I've been having too much fun listening to her...could be the first time I ever said that. Anyway, I've included some...
  14. chris savage

    Low hum in General Electric Solid State console

    Hey guys, I have a late 60s General Electric Solid State console that I have been doing a gradual restore on. After getting it running, replacing the needle cartridge, resoldering the connectors to the stylus - I am getting a low tone from the phonograph. It almost sounds like bass feedback but...
  15. artsybob

    Fisher TFM-300 Up and Running!

    Finally got my Fisher TFM-300 tuner restored and made it part of my stereo system! (I'm running it through my Realistic SAF-40D integrated tube amp). Sounds great, and I just love the way it lights up from the red stereo beacon light to the grid pattern the metal case projects onto the wall. I...
    • artsybob
    • Thread
    • fisher fm tuner hybrid solid state tfm-300 tube
    • Replies: 10
    • Forum: Fisher
  16. destroyerzx1

    Best SS Preamp w/Phono Vintage or new $1k-4k?

    Alright so my current setup is Speakers: Yamaha FX-1 Amp: Yamaha B-2 Currently being serviced Turntable: Thorens TD126 MKII Phono pre: ART DJpreii - Temporary for the time being Preamp: XiangSheng 728A Spent way to much money tube rolling this thing I had taken my turntable over to my fathers...
  17. X

    Need help identifying a Magnavox 500 Solid State Amp/Receiver

    I found what appears to be a nice Magnavox 500 Amp/Receiver that I can't find anywhere online. I found one that is similar but appears to be the next model up: https://www.worthpoint.com/worthopedia/vintage-magnavox-1000-solid-state-115836961 . Everything appears to work on it and it has a nice...
  18. H

    VARIAC DIM BULB TEST and HARMON KARDON 930 REBUILD

    This is mainly a question re: Dim Bulb Tester. I was running a fully rebuilt HK 930 thru my Variac and Dim Bulb setup and all was fine at 120V and I was listening to a perfect receiver. After about 15 minutes the bulb flared and I quickly turned off the receiver. I can find no faults now or...
    • HankM
    • Thread
    • dim bulb tester solid state
    • Replies: 1
    • Forum: Solid State
  19. cocovinyl176

    Trade MC250 SS for Dynaco st70 Tubes?

    Hello all, I know some of you will be bias in one way or another regarding SS vs Tube, but thought I'd throw this out to the AudioKarma world to gather some thoughts. A trade: Mcintosh MC250 for Dynaco st70 Both units are cosmetically 9/10 with zero rust or pitting Both units are in its...
  20. artsybob

    Need Help Finishing Fisher TFM-300 Restoration

    So far I've replaced nearly all the capacitors in this tuner, but I need help replacing the last remaining can cap, replacing the selenium rectifier and testing it to see if the other parts work fine. Does anyone know of someone in the DC/Virginia/Maryland area that can help out? Thanks!
    • artsybob
    • Thread
    • fisher hybrud solid state tfm-300 tube tuner
    • Replies: 2
    • Forum: Fisher
  21. E

    About to Replace the Capacitors on a Technics SA-202 Receiver, Questions About the Tuner Stage

    So, after catching the re-cap bug from doing my Onkyo A-7070 (holy crap, what an improvement!), next on the surgery table is my Technics SA-202. The Technics, though, has a tuner section, and that is where my trepidation begins. I have heard conflicting reports that replacing caps in tuner...
    • EndlessMike
    • Thread
    • alignment re-cap recap receiver receiver repair sa-202 solid state technics tuner tuner repair
    • Replies: 13
    • Forum: Tuners
  22. artsybob

    Replacing Selenium Rectifier (Fisher TFM-300)

    Hello all, I'm trying to replace the selenium rectifier in a Fisher TFM-300 tuner. I bought an 8 amp 400V full wave bridge rectifier as a replacement. Would this be a drop-in replacement or would I have to solder in additional resistors? Thanks for the help! Here's the schematic...
  23. TheHammsBear

    New Member From The PNW

    Hello from Tacoma, WA. Early 40s music lover with a small stash of records (4 expedit squares), 1000+ CDs boxed away in the garage and 1.2TB of mp3s on the hard drive. A small sonos set up seems to fit most of our needs but I enjoy fawning over high end stereo setups I'll never be able to...
  24. P

    Not sure if I'm buying the right caps for my Kenwood KR 5200

    So I recently bought a Kenwood KR-5200 receiver, it works and sounds great, but after opening it I saw several bad caps which had the following written on it "4700J, WV 50, NOBLE". I went ahead and took a look at service manual and the only caps rated at 50 WV were 4700uF so I went online to...
  25. Cody AOC

    Amplifier Noise Floor

    First off i'm going to get to the point I own a Crown XLi 2500 and a Crown XLi 800 they both have this hissing from my speakers does not matter what speakers i'm using they will have a hissing sound just loud enough that I can clearly hear it from 2 feet away at my desk in my bedroom. Is there a...
    • Cody AOC
    • Thread
    • amp amplifer crown crown amplifier hissing home audio pro audio solid state sound speaker
    • Replies: 41
    • Forum: Solid State
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