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humming sound

  1. ChrisP2

    Nakamichi CA-7A - Tone Control Hum

    Lots of info around 60 Hz hum on these units when tone control enabled, particularly linked to the “Low” tone control. Had one on the bench, here’s what I found, hope it helps someone out there. - Hum was audible and clearly visible on scope at over 10 mVpp primarly on Left channel - Not...
    • ChrisP2
    • Thread
    • humming sound nakamichi . pe amp . preamplifier . phono
    • Replies: 2
    • Forum: Solid State
  2. R

    Pioneer SX1250 Humming noise from Tape Monitor Switch 1 and 2 (sounds like) Ground Issue

    Hello everyone, just joined in today. I've been in the shadows for a while, gleaning information over the years, but now I need some help from the community that I just can't seem to find anywhere. This site has been an informational treasure trove of amazing help over the years and I am looking...
  3. Oggioffshore

    Harman kardon HK 990 humming sound

    Just got my eyes on this HK 990 amp at the market place. And got curious. Googled it, and liked what I red, and pics of how it's built even more. And 20 kg of power... Seller say it's a humming sound from it, probably from the dac part... Have no experience with "digital" amps. But i think...
  4. HansVenlo

    Sansui AU-517 humming

    HI AK-members, I'm new on this forum and not very experienced in restoring old Sansui equipment to it's full glory. I successfully did a recap and restoration of my Sansui AU-666 (1970) that I gave to my oldest son 15 years ago. With lots of help from the many threads on this topic. Learned a...
  5. R

    Sansui AU-517 and Project TurnTable humming noise

    Devices: Sansui AU-517 with Project TurnTable As i'm getting ready to play my vinyls, i hear an annoying humming sound coming out of the speakers. The ground wire is definitely connected. I even cleaned the place w/ WD40 where ground wire plugs/ties into. The sound went away for sometime and...
  6. M

    Grounding TT with no ground post to new phono preamp

    I was recently gifted a Crosley c200 TT which has a built-in phono preamp. I recently decided to upgrade the built-in preamp by switching to a Hagerman Bugle 3. The new phono stage has a grounding post but the TT does not. I am noticing a small hum when I have the TT connected to the phono...
    • Michael Wall
    • Thread
    • ground grounding grounding buzzing sound humming humming sound phono pre amp phono preamp phono stage turn table turntable
    • Replies: 18
    • Forum: General Audio Discussion
  7. M

    Grounding TT with no ground post to new phono preamp

    I was recently gifted a Crosley c200 TT which has a built-in phono preamp. I recently decided to upgrade the built-in preamp by switching to a Hagerman Bugle 3. The new phono stage has a grounding post but the TT does not. I am noticing a small hum when I have the TT connected to the phono...
    • Michael Wall
    • Thread
    • ground grounding grounding buzzing sound humming humming sound phono pre amp phono preamp phono stage turn table turntable
    • Replies: 0
    • Forum: Turntables
  8. Amedeo Felix

    Pioneed PL-12D Humming/possible grounding issue

    Hi, I have an issue with my Pioneer PL-12D producing a pronounced hum. I have read threads on it, and people experiencing only one channel of hum and issues suggested to be the motor. However, with mine the hum seems to be both channels, it can go away when I fiddle with the ground wire such as...
  9. S

    Yamaha P2200 Humming

    I recently got a Yamaha P2200 from a friend and it got an annoying hum right around 60% volume. After reading some of the comments, I decided to open the amp and try to replace all the cap. I am currently looking at the Drive Stage Board and I noticed a lot of unidentifiable capacitor. My...
    • Skylape
    • Thread
    • humming sound yamaha p2200
    • Replies: 27
    • Forum: Yamaha
  10. 1

    Hitachi HT 354 tonearm grounding problem

    Hey there Audiokarma, first time posting, I've tried searching the previous threads and i can't find a scenario that fits my exact problem. So, here it goes. I bought this turntable off of craigslist and it is in great shape, with what appears to be a brand new ADC XLM improved MK II stylus, for...
    • 12xu92
    • Thread
    • ground issue ground loop hitachi ht-354 humming sound tone arm
    • Replies: 17
    • Forum: Turntables
  11. W

    Pioneer SX-1000TW/Technics SL-D2 problem

    Hey - I recently purchased a Pioneer SX-1000TW and a Technics SL-D2 and there is a humming/buzzing noise when the right channel is selected along with minimal output, left is fine, and in stereo--as you might imagine--the hum is present, but lessened. I get the same noise when I connect my...
  12. Kevbo

    Loud, Low Hum When Marantz Turned On

    I have been using my Marantz 2240B for about two years now with little issue (all have been fixed). And today, which was just another morning for me to turn it on to listen to music while working, a loud, low-grade hum is coming from the speakers. Music still plays fine, but there is the hum on...
    • Kevbo
    • Thread
    • audio audio issue ground hum hum noise humming humming sound marantz speakers
    • Replies: 36
    • Forum: Marantz Audio
  13. O

    My Sherwood s5000 hums. Help!

    I bought a recapped Sherwood s5000 which hums, most horrendously on the phono stage. Hum is low and acceptable on the monitor input where I plug my ipod in. Problem is I mostly listen to vinyl. My tube-tech friend found that the 4 output tubes weren't rated for the high voltage that this thing...
    • olyrecord
    • Thread
    • hum humming sound phono pre-amp phono preamp phono stage sherwood tube amplifier
    • Replies: 11
    • Forum: Tube Audio
  14. Johnny_Law

    Pro-Ject Phono Box mkii - Loud Hum No Music

    I recently acquired one of these, a Pro-Ject Phono Box mkii, hoping to use it from my AT-PL120 into my Yamaha V665 HT receiver (then to my NAD C370 to my Polk SDA 3.1TLs). The Phono Box is a used unit, and the previous owner didn't mention having any issues with it. However, as soon as I...
    • Johnny_Law
    • Thread
    • hum humming sound phono box pre-amp pro-ject
    • Replies: 26
    • Forum: Turntables
  15. M

    Quad 405

    There is an internet auction in which I can get my hands on an old Quad 405 quite cheap, I've been looking for something to drive my old IMF TLS80 with. The seller is vague, writing that it might be a humming sound in one channel. So I guess there is a humming sound. Anyone knows what's wrong...
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