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ground hum

  1. A

    Thorens 150 mk1 w/ TP13 original tonearm left channel noise

    I'm at my wit's end about this one and I need to ask for help. It's a minor issue, but still annoying. I have had a Thorens 150 AB ("mk1") with the original TP13 (not-kugel/ball) arm for a few months. It's wonderful! Did the lubrication and tinkering, tuned the suspension, installed...
  2. M

    Rotel RCC-945 Ground Issue

    Hello I'm currently troubleshooting a Rotel RCC-945 cd player. It has what seems to be a ground hum. The noise starts at power up when the relay switch clicks (this relay is located by the output terminals). I re-soldered some solder joints that looked suspicious to the eye. These include the...
  3. JB8

    ROTEL ROTEL - Ground Hum From Milan to Minsk

    Forum friends. I have a little ROTEL RX-200A with the dreaded ground hum. It's 60 cycles, across both channels, and it's like a mouse in a garage - every time I think I have it cornered I'm foiled again. Here's where we're at thus far: Replaced the main amp transistors and four of it's caps...
    • JB8
    • Thread
    • 60 cycle hum ground hum receiver rotel rotel rx-200a
    • Replies: 65
    • Forum: Solid State
  4. JB8

    PIONEER SX-2500 FM Stereo Distortion ++

    Hey Pioneer experts and enthusiasts! I have a beautiful SX-2500 that I've grown quite fond of (damnit) shouldn't have let myself get attached but here we are... Overview: Autotune seems to work but I'm not worried about that for now Has moderate ground hum, not a crazy-loud one, but annoying...
    • JB8
    • Thread
    • fm ground hum pioneeer pioneer sx 2500 stereo distortion
    • Replies: 17
    • Forum: Pioneer Audio
  5. H

    Yamaha C4 preamp fault. Hum. Phono switches.

    Have done a lot of work on this preamp and am starting a fresh thread because several faulty components have already been replaced or repaired and am hoping it may now be much easier to isolate and identify the problem. The issue: Hum is present on all inputs. -Playing vinyl on Phono 1 and 2...
    • Hifibythekg
    • Thread
    • earth ground hum hum noise preamp noise preamp yamaha yamaha c-4
    • Replies: 116
    • Forum: Yamaha
  6. H

    Ground hum, Yamaha C4

    Have nearly tracked down the source of a constant loud hum. Think it’s the Phono MC input.. So, am wondering what should I especially check in the area of the Phono MC RCA inputs and pcb? Some background: Inserting a shorting plug into the MC Phono inputs has a modest effect on the volume...
    • Hifibythekg
    • Thread
    • earth ground hum ground issue yamaha yamaha c-4
    • Replies: 36
    • Forum: Yamaha
  7. Flapjacks

    Are there alternatives to grounding a stereo?

    I've got a newer record player but my stereo has a spot for a ground and hums with the phono input. Would grounding the stereo to something (random metal?) get rid of it?
    • Flapjacks
    • Thread
    • ground hum help noob question record player
    • Replies: 20
    • Forum: Turntables
  8. Flapjacks

    Kenwood KR 6050 record player ground question.

    I've got an old KR 6050 and it talks about grounding your record player to get rid of ground hum in the manual but modern record players don't have a ground (at least mine doesn't). Can I just ground it to some metal or something? Would that get rid of the hum? Any suggestions of things that...
  9. Subchannel

    SANSUI AU-G90X HUM PROBLEMS

    Dear forum: Just got an AU-G90X on my bench with hum on PHONO input. It´s both Ground hum and 50Hz mains hum. It also bleeds into the other inputs, though much much lower in strenght of course. The amp is untouched from new so all pot´s and contacts needs cleaning. Before I start to dismantel...
  10. Sergimm

    Trying to find the source of a low hum

    I am experiencing a 60hz low hum in a Marantz 1050 amp I recently recapped. It sounds very much like a ground loop, but I’m not sure anymore. This is how it behaves: Unaffected by volume level Present in both channels, although it hums louder on the right channel Unaffected by tone controls...
  11. Isaac C.

    Tonearm Help! Left Channel Fine, Right Channel No Sound and Hum

    Hello everyone, I just completed my first tonearm rewire on a Syntec S-220 with KABUSA supeflex and Cardas solder and have run into a bit of a problem. The left channel works fine and sounds fine, however the right channel has no sound and a ground hum. What is weird however, is that if I loosen...
    • Isaac C.
    • Thread
    • ground hum ground loop hub left channel works no sound rewire right channel no sound syntec s 220 tonearm
    • Replies: 23
    • Forum: Turntables
  12. oldvinyldude

    Ground Loop Kenwood KA7002

    Hi: I just finished resolving another issue (no amp output), by cleaning the speaker selector switch and reapplying Deoxit. I also did the same for the tape monitor\dubbing switch, as it was still noisy. Next up-I have a ground loop somewhere-120 hz tone heard anytime a speaker is switched on...
  13. plbeard

    Pioneer PL-50 Ground Issue

    I have a Pioneer PL-50 that may have a ground loop; it isn't a simple ground issue. The ground wire takes care of 80% of the normal ground noise, but at 50% volume (with no music) one can hear a lingering 60 cycle buzz and some hum when the TT motor is engaged. Frankly, this isn't objectionable...
    • plbeard
    • Thread
    • ground hum ground issue ground loop pioneer pl
    • Replies: 0
    • Forum: Turntables
  14. G

    Marantz model 5000 ground hum on line in, screeching on DIN

    Hi guys, A week ago I pickup this neat looking little Marantz stack, with tuner and amp in excellent condition but the cassette deck not working. The model 5000 not only needed new belts, but I had to take the whole transport mechanism apart to clean off the harded old grease. Eventually I got...
    • Gertjan90
    • Thread
    • 1050 din ground hum marantz model 5000 rca tape
    • Replies: 0
    • Forum: Tape
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