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troubleshooting

  1. D

    Troubleshooting Silvertone 1335 / Danelectro Challenger

    So I have this Silvertone 1335 amp that I've been working on, I completely recapped it and changed out most of the resistors as well, removed the death cap and changed to a 3-prong power cord. It had been sitting for years before I got it, so I hadn't even tried turning it on before I did all...
    • dirtgeek
    • Thread
    • danelectro short circuit silvertone 1335 troubleshooting
    • Replies: 6
    • Forum: Tube Audio
  2. L

    Speaker fuses popping and distorted channel

    Hello, so I've got a Rotel RA-400 and recently the left channel has started to sound distorted and it keeps popping speaker fuses. Just wondered if anyone else has had these issues and how you fixed them? from what I've seen online recapping the amp might be the way to go but before I try and...
  3. realleok

    Ticking sound from Casseiver

    As mentioned in another thread, i have recently bought a Realistic SCR-4500 Casseiver. It is working fine, but intermittently makes a ticking noise from inside. It sounds like settling but its been happening for a while. It happens more frequently when on but still happens when off. All modes...
  4. Derek O

    SX-680 - Need Help Diagnosing Low Volume/Voltage

    Hello! I've owned an sx680 for about 4 years and has been great. I recently shipped it from my home town to where I live, and it worked fine for about a week and then stopped working.. No sound from the speakers from the AUX input. I've since taken it apart, and tested voltage throughout...
    • Derek O
    • Thread
    • diy pioneer pioneer sx troubleshooting
    • Replies: 4
    • Forum: Pioneer Audio
  5. R

    Yamaha CR-2040 Troubleshooting Help

    Hello! I recently came into possession of a CR-2040 due to it being in the garage of a house we just bought. Having an (admittedly rusty) EE background I thought it might be a cool project to get back up and running. The behavior I'm seeing is that the unit seems to power up normally (you can...
    • Rick F
    • Thread
    • 2040 troubleshooting
    • Replies: 7
    • Forum: Yamaha
  6. C

    Receiver Not Making Sound: Realistic STA-820

    The short version: I have a Realistic STA-820 that powers on but makes no sound. Anyone have any basic troubleshooting ideas? Some more details and background: I bought it used earlier this year and everything seemed fine, but after some time I noticed that one channel was quieter than the...
    • cmnparlance
    • Thread
    • no audio realistic receiver receiver advice troubleshooting
    • Replies: 3
    • Forum: Solid State
  7. NickDeO

    Requesting Troubleshooting Help - HK 730

    Hello again, AK! A few months ago, I picked up a Harman Kardon HK 730 Twin Receiver for around $160. I forget if the issue was "no sound at all" or "no sound in one channel" (I misplaced my original repair notes... whoops), but I had hoped that a recap and some DeOxit would get everything...
    • NickDeO
    • Thread
    • dead channel harman kardon hk 730 troubleshooting
    • Replies: 5
    • Forum: Solid State
  8. MBuras

    Help following SX-828 preamp schematic - troubleshooting dropped channel

    Backstory. Fully rebuilt this SX-828 about 3 years ago. Been fine until recently. Started dropping the left channel. Usually within the first 5 minutes of power on and doesn't matter phono, aux, etc. -injected sound directly into amp section and both channels were fine for 30 minutes...
    • MBuras
    • Thread
    • drop channel left channel pioneer sx-828 preamp troubleshooting
    • Replies: 5
    • Forum: Pioneer Audio
  9. Since1984

    Marantz PM400 - diagnosing cause of noise in one channel

    Hi all, I've got a Marantz Pm400 on my bench, nice amplifier. It works, one channel playing fine, the other has weird noise which almost gets dangerous to speakers - it's something like a cracking/almost a bit like fireworks, sometimes gets lower, then suddenly comes back again, never stops...
  10. V

    Beginner learning the restoration ropes, are caps my culprit?

    Hey everyone, just getting my feet wet in the world of vintage hi-fi. I've always had a passive interest, but the Techmoan channel on YouTube pushed me over the edge and now I've started collecting things from local auctions, etc. I grabbed a Pioneer Centrex TH-3131 (receiver/turntable/8-track)...
    • V1xIII
    • Thread
    • beginner restoration troubleshooting
    • Replies: 13
    • Forum: Pioneer Audio
  11. phollenback

    2330b missing one fm channel and I'm stumped

    I'm working on restoring a 2230b that's generally in good condition. The one major problem I'm trying to figure out is that it only has a left fm channel. I've tested other inputs such as AUX and they have both left and right sound. I also tried taking the audio directly from the preamp output...
  12. tonythetech

    KLH Model 20: Only Record Player Works?

    Hello all, I am new to audiokarma and been a long time viewer! Finally made a account because I can't find anyone else that has had a similar problem to my KLH Model 20. I need troubleshooting help with KLH model 20 that I recently picked up from a estate sale. Upon testing, nothing seems to...
  13. M50'sMike

    Oppo BDP-103D potential standalone dac?

    Hello fellow akers, I have a theory that I'm curious about it being correct, I just upgraded to the 4k realm of video consumption by purchasing a LG Nano cell series 85 4k TV. I use my HT system for 2 channel listening for music, and 5.1 for theatre. In my chain is a Yamaha RXV3800(as a...
    • M50'sMike
    • Thread
    • 4k bluray blu ray dac home audio home theater home theatre oppo 103 ps4 pro troubleshooting yamaha receiver
    • Replies: 8
    • Forum: DACs
  14. M50'sMike

    Potential way to make oppo bdp-103 standalone dac??

    Hello fellow akers, I have a theory that I'm curious about it being correct, I just upgraded to the 4k realm of video consumption by purchasing a LG Nano cell series 85 4k TV. I use my HT system for 2 channel listening for music, and 5.1 for theatre. In my chain is a Yamaha RXV3800(as a...
    • M50'sMike
    • Thread
    • 4k bluray blu-ray dac home audio home theater home theatre oppo 103 ps4 pro troubleshooting yamaha receiver
    • Replies: 1
    • Forum: General Audio Discussion
  15. C

    2275 Marantz Troubleshooting

    2275 Power Supply Board Testing Voltages by Cryptical11 posted Aug 13, 2020 at 1:48 AMThe relay on my Marantz 2275 will not engage when I turn on the receiver. The relay had engaged before I did some work on the power supply board and the right power amp board. I tested voltages with respect to...
  16. topwik

    Mirage M595IS troubleshooting

    Hello and good day! I have a question about the Mirage m-595is. I just hooked these up as my bedroom speakers powered by an Onkyo TX 8160 stereo amp. I've noticed today that the rear tweeter might not be working. If I close-in my ear to the back of the speakers, I hear the woofer doing it's...
    • topwik
    • Thread
    • 595is biamp bipolar biwire m-595is m595is mirage troubleshooting tweeter
    • Replies: 14
    • Forum: Speakers
  17. S

    1983 Pioneer SX-50 just went CRAZY! Please help?

    Before I begin, here's a little backstory to this beautiful stereo of mine. It's almost 40 years old now, and has never been re-capped, all original parts. But it's been working beautifully for the few months I've had it so far. Recently, there's been an issue where the stereo would lose power...
  18. J

    No Sound on Panasonic RQ-2103 Tape Recorder

    Some time back I acquired a Panasonic RQ-2103 tape recorder from an estate sale. When I was first playing around with it, it seemed to work fine until I somehow blew it up. What's strange is that there's no burn marks or anything that I can see. It looks clean. Despite this, upon revisiting it...
    • Justin Hogan
    • Thread
    • cassette help panasonic troubleshooting
    • Replies: 0
    • Forum: Tape
  19. J

    Problems with Pioneer CT-540

    I recently acquired a Pioneer CT-540 cassette deck, and it has a few problems. When in the play mode, the reel on the right won't move. It also won't rewind or fast forward. I do have an idea as to what the problem is, and it has to do with an idler wheel that pushes up against the reels. The...
    • Justin Hogan
    • Thread
    • cassette help pioneeer troubleshoot troubleshooting
    • Replies: 0
    • Forum: Tape
  20. R

    Pioneer SA 6500 II - recap gone wrong

    Hello all, i have a Pioneer SA 6500 II amp - in perfect working condition before today - that i tried to recap mostly because i have a lot of free time on my hands, and because i like to thinker with things (this is my first such project). Hade all my homework, procured all the things that i...
    • robiles
    • Thread
    • pioneer sa 6500 ii recap troubleshooting
    • Replies: 17
    • Forum: Pioneer Audio
  21. C

    Marantz 2275 Power Amp Board Need Help Troubleshooting

    I need help, please troubleshooting my Marantz 2275 that I got at an estate sale a few months ago. I have clear audio through the right channel but no sound through the left channel. After cleaning connectors, switches and potentiometers, I did a test by connecting left preamp RCA output to...
  22. N

    No audio output

    Hey guys I'm new here and unfamiliar with electronics so please bear with me. I have A samsung receiver model: HT-AS730S that is not producing sound through the speakers. Subwoofer is working and when i plug in my headphones in the jack they work as well how do I troubleshoot from here. I...
  23. N

    Troubleshooting Pops and cracks

    I trying to add an Audient ASP800 as a “slave” device to add additional channels to a PreSonus Quantum 26/32, for use with the DAW Studio One 4.6, on a 13” MacBook Air, early 2015, 8gb, connected via thunderbolt 2. Can’t seem to get it set up correctly. Lots of clicks and pops in the signal. I...
  24. N

    CR2020 transformer issue?

    I am working on an auction object (CR2020) that I got cheapish. It sold as a defect. After troubleshooting for some evenings I now start to suspect that the transformer is broken. When powering on (using a light bulb protection) the relay never go out of protection mode. After about 10 seconds...
    • niclasf
    • Thread
    • cr2020 troubleshooting yamaha
    • Replies: 5
    • Forum: Yamaha
  25. C

    Realistic STA-820: Seeking Opinions and Troubleshooting Ideas

    I recently bought a Realistic STA-820 receiver for what I thought was a fair price, and I want to hear people’s thoughts on this model and ask a couple technical questions. First off: does anyone have any opinions about the STA-820? It doesn’t seem to be one of the Realistics that get talked...
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