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hum

  1. ExtraCharity

    Kenwood KR-9400 Humming Sound - HELP

    Hey Folks, I believe I am the cause of this now annoying Humming sound. Received a KR-9400 for Christmas and have a pair of infinity rs525s hooked up and have been having a blast these couple of days. Got it from the original owner. Took it upon myself to remove the top cover and use some...
  2. ExtraCharity

    Kenwood KR-9400 Humming Sound - HELP

    Hey Folks, I believe I am the cause of this now annoying Humming sound. Received a KR-9400 for Christmas and have a pair of infinity rs525s hooked up and have been having a blast these couple of days. Got it from the original owner. Took it upon myself to remove the top cover and use some...
  3. A

    Tube preamp ground loop issue?

    A friend of mine builds tube preamps. After listening to one of the designs at his house, I had to bring one home it sounded fantastic. Clean, clear and dynamic. No issues...yet. I bring the preamplifier home. I proceed to remove my solid state preamp, and in place of that I put the new tube...
  4. M

    Thorens TD160

    I recently bought a TD160 mk1 with a view to renovating and restoring it. It has a hum. The previous owner at some stage added RCA jacks to the back. The wiring is obviously a mess and I would like to go back to something similar to how the turntable left the factory. However, I would like to...
  5. C

    Help w/ M Audio speakers + phono out from receiver

    Hi, For about 8 years now I've used the M Audio AV-40s as my main computer speakers, as well as for light studio work (I do it all on the same computer). I also have a receiver-amplifier hooked to a tape deck and a turntable, that has a phono out. I have a converter from the 1/4" out on that to...
    • cma2032
    • Thread
    • amplifier blown cd player hum m audio monitors receiver speakers tape deck turntable
    • Replies: 5
    • Forum: Speakers
  6. rolf logan

    When I turn up the Volume, I get a hum.

    I'm restoring an old Magnavox Stereo Console Model 1SC 268F, with a Collaro turntable. Not sure the year, but 60's era for sure. I've cleaned and lubricated the record changer. I've cleaned the cartridge, put in a new needle, and replaced the tone arm wiring. See Photos. The changer works...
    • rolf logan
    • Thread
    • collaro hum magnavox micromatic tone arm
    • Replies: 19
    • Forum: Tube Audio
  7. H

    Yamaha C-4 preamp hum.

    This amp appears to be working well in all regards except that there is a significant hum when Phono is selected. The hum also comes through substantially on Aux and Tuner. Hum appears to be stronger through the left channel. Hum is lessened when ’Tone Bypass’ is selected, but...
    • Hifibythekg
    • Thread
    • c-4 grounding hum yamaha yamaha c-4
    • Replies: 12
    • Forum: Yamaha
  8. David Weaver

    AU-505 Project

    I recently acquired an AU-505 as a new project. It was listed as parts/not working and I purchased it a a great price. Not expecting too much, I thought it would be something for me to tinker with. To my surprise, other than the shipping carnage to the case, after cleaning, passing the dim bulb...
  9. James Cox

    Tandburg 2080 restoration problems

    Well I'm back with another head scratcher! My friend brought me a tandberg 2080 to try to get restored and up and running for him. I tried to warn him that I'm more familiar with tube stuff and have only done basic recaps on solid state gear but he wouldnt listen! So we this thing arrived on...
  10. can-man

    Couple of issues with Shure V15 Type II cartridge on Dual 1226

    Started working on mu Dual 1226 that I purchased in 1974, Hasn't been used in at least 10 years. I am having trouble getting the cartridge not to "rub" on record I am playing. I think I have it set up correctly but seems to rub which makes a noise. Other issue I am having with cartridge is can...
    • can-man
    • Thread
    • dragging cartridge dual 1226 hum shure v15 type ii
    • Replies: 6
    • Forum: Turntables
  11. akadrhouse

    Volume Pot Hum - Marantz 2215b

    I have a Marantz 2215b that I just finished restoring. Usually when I get a hum from a unit, I can trace it back to grounding and fix it. In this case the hum is quite different. On AUX source - Hum is volume pot dependent - volume on zero -> no hum On phono - hum is similar except when at...
  12. tlite

    Marantz 2235 Headphone Hiss

    Howdy all: This is the same Marantz 2235 receiver I replaced transistors in back on this thread. I'm getting a hiss from all input channels when listening through headphones. Even with nothing playing. Through the speakers all sounds fine. In reading the service manual, I'm having a hard...
    • tlite
    • Thread
    • headphone hiss hum marantz 2235 marantz hiss transistor replacement vintage marantz
    • Replies: 1
    • Forum: Marantz Audio
  13. dinkylink

    Help !Marantz 2270 loud hum popping sound

    Hello guys, thank you all for reading this , I have a Marantz 2270 that just came out of storage , it used to work beautiful but now as soon as you turn on the speaker relay disengages after a few seconds and get a loud hum popping noise for a second , relay kicks into protection disengages...
  14. 7Hz Research

    Akai 4000DS II Mains Hum

    Hi everyone, I'm getting mains hum from the line out on my Akai 4000DS II when it's not even powered on. I run it through a Behringer PX2000 patch bay, and the hum goes away if I break the normalised connection by plugging something else through those sockets. The hum gets louder when I turn the...
    • 7Hz Research
    • Thread
    • akai akai 4000ds ground hum mains mains hum tape
    • Replies: 2
    • Forum: Tape
  15. F

    C26 Buzzing Issue

    Hi, I'm very new to audio stuff so please keep that in mind in your responses. I have a C26 Preamp that buzzes (combination of a hiss and a hum) fairly loudly in both channels, and can be heard during music playback (especially with headphones). It happens on all inputs, even those that are...
    • Finnston
    • Thread
    • buzzing help me please hiss hum mcintosh mcintosh c-26 preamp
    • Replies: 7
    • Forum: McIntosh Audio
  16. akadrhouse

    Hum Troubleshooting Sansui 9090DB

    I have a nice Sansui 9090DB I'm troubleshooting for a friend. It has a quite discernible hum in both channels. It had been thoroughly recapped when he bought it, but not main filter caps. They used good caps too and were quite thorough in that regard. I decided to replace the main filter caps...
  17. J A

    SX-580 120hz hum

    I've been digging around the forums and I think this is power supply related based on what I'm seeing. I have a 120hz hum (spectrum analyzer confirmed) from both speakers. It is not influenced in any way by volume, input changes, or switching channels. The only time it stops is disengaging...
  18. JB8

    120 Cylcle Hum After Recap - AKAI AA-6600 - Next steps?

    Team Audiokarma, I recently found this dude, likely paid too much for it but love the look and the wood case. Trying to tackle the 120 cycle hum I'm getting out of both channel across all functions and with volume at zero. Welp, I replaced a bunch of caps because, well, I wanted to! This is an...
    • JB8
    • Thread
    • 120 cycle hum akai hum hum fix recap receiver
    • Replies: 36
    • Forum: Solid State
  19. aatallah

    KA-8100 Humm (60hz)

    Hello, A friend just gave me a KA-8100 with a strange hum problem. It hums at 60 hertz, regardless of volume on the control. The only setting that seems to affect the hum is the frequency filters on the front panel (they slightly change the pitch). I put in new filter caps, and it didn't...
  20. jpatti75

    Slight Hum (‘61 Motorola Console)

    Hi gang, I am getting a slight hum from the speakers on my ‘61 Motorola SK70 console, and I assume I am picking some interference due to poor power and speaker cable routing on my part when I restored all the innards. The unit originally had a very pronounced 60hz hum, but that was resolved...
  21. vinylvirgin

    Puzzling hum issues with turntable and new audio interface

    I am working on a system which includes a Technics SP-15 turntable with an Audio-Technica ATP-12T tonearm and an Ortofon DJ cartridge. The tonearm is connected to a RANE PS 1 phono stage, which has balanced outputs. This setup was once connected to a computer with an Echo Gina 3G audio...
    • vinylvirgin
    • Thread
    • balanced audio technologies buzzing ground loop hum sound interface
    • Replies: 6
    • Forum: Turntables
  22. jeeem

    Ghost in the machine (Pioneer SX-790)

    I picked up a very handsome Pioneer SX-790 (the dark-dial equivalent of the SX-780) and had to replace bulbs and clean it up a bit. (As you can see, I'm experimenting with some ice blue LEDs.). Odd thing is: the meters sometimes dance even when there's no input attached (PHONO or AUX -- not even...
    • jeeem
    • Thread
    • hum meters pioneer sx-790 static
    • Replies: 4
    • Forum: Pioneer Audio
  23. trickert

    Help with GAS Thoebe Preamp: it hums

    Hi, I have picked up a GAS Thoebe preamp. It has been recapped and is otherwise in great shape. I'm listening to vinyl through it, and it sounds excellent... with one snag. It hums. There's a low hum coming out of it. The hum gets lower and higher with the volume; when I turn the volume all the...
    • trickert
    • Thread
    • g.a.s. gas great american sound company hum noise preamp noise preamp thoebe
    • Replies: 23
    • Forum: Solid State
  24. dustmaker

    Phono/Equalizer problem - SX-850

    I am working on a SX-850 for a friend. I just updated the equalizer board (AWF-011) as one channel wasn’t working. One of the PNP transistors was bad, so I replaced both PNPs with KSC992 (matched) and all four NPNs with KSA1845s. I now have both channels working again but I have one problem...
  25. J

    Help with a hum in the pre of a JVC-RS33

    I have two JVC-R-S33 units, and originally I bought one to fix the other as the original one was my fathers and I was repairing it for him. Well I actually decided I like the sound enough that I want one myself. The parts one I ordered I ended up finding a loose ground on the main board and it...
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