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hum

  1. crkeith65

    QRX-5500 120hz hum caused by my mistake

    While troubleshooting a dial lamp short that was blowing F1 fuse, I had a wire disconnected from the light box that has 6.3vac. (Lamp Power). When I was moving the light box around to get a better look, the loose wire accidentally contacted a wire on the 330ohm resistor that had 58vdc. See my...
  2. Stereofro

    C2200 Humming.....Tubes?

    I noticed while investigating issues I was having with my 275 that I have a low hum coming from my C2200 pre. The hum is there when the unit is in standby. When the tubes warm up and the unit comes out of start up the hum seems to ubruptly stop. I have tried my power conditioner, a different...
  3. M

    Harman Kardon citation 16 has a strong hum on the right side. Any help?

    A few years ago my HK Citation started to hum quite loudly on the right side. I have the technical manual but I think it's the large 1,000 microfarad capacitors that have given way. Has anyone else had this problem?
  4. N

    JVC VCR-5501 Humming Issue

    i recently bought this receiver (JVC VCR-5501) fairly cheap and it works fine and sounds good, but when its left on for about an hour or so it starts to make an oscillating humming sound through the speakers and gets louder as its left on. it only goes away when it is turned off and left off for...
    • NOMTW
    • Thread
    • hum jvc receiver vintage receiver
    • Replies: 0
    • Forum: Solid State
  5. pauliachi

    Philips N4504 hum

    I recently bought a second hand Philips N4504 reel to reel tape deck. It sounds OK when I plug my headphones directly in to the tape deck, however there is a loud hum when listening through my amp with RCA cables connected. Any thoughts?
    • pauliachi
    • Thread
    • hum n4504 philips reel to reel tape deck
    • Replies: 3
    • Forum: Tape
  6. 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
  7. Jon408

    LOUD turntable hum only after time elapse

    I have a Beogram RX that hums only after I've been playing records for a period of time, and the hum can even start when the turntable has stopped (but it never starts unless the turntable was turning). It is quite loud. I have changed amps and speakers to isolate the problem, and it must be...
  8. c.coyle

    Troubleshooting hum

    Capacitor coupled receiver. Nothing connected to it except two speakers. Hum on all inputs, both channels, regardless of volume [EDIT: Meaning the hum level is not volume dependent]. Flipping the plug makes no difference. Plugging into another outlet on a different circuit makes no...
  9. QSilver

    Pioneer A-8 hot transformer and humming.

    I got one of these a few months ago but only just got into using it this week but I've noticed that the transformer does hum noticeably and gets quite hot. Even when idling. Is this anything to worry about? The hum is from the transformer itself rather than the amp.
    • QSilver
    • Thread
    • 50hz a-8 a-9 ac hum hot hum humming mains hum pioneer transformer
    • Replies: 93
    • Forum: Solid State
  10. Psimonics

    Hum in the grooves

    I recently got a Yamaha GT-750, and have found it to be the quietest turntable I've ever owned. So when tonight, I got out my original pressing of John Coltrane, A Love Supreme on Impulse, which I have always thought to be immaculate, I was surprised to hear a humming when I put the needle down...
  11. lotsofluna

    Sony STR-7055A Receiver - Eliminating ground issue/electric hum

    In a desire to record many analogue formats I have, and to generally just eliminate the annoyance of electric hum, I've been trying to fully eliminate hum/ground my Sony STR-7055A Receiver unit (Reference). NOTE: The 7055 has a 3-prong output plug with ground pin (see here.) My unit is NOT the...
    • lotsofluna
    • Thread
    • ground hum receiver receiver advice sony sony str-7055a
    • Replies: 9
    • Forum: Solid State
  12. 131east23

    Dynaco ST 70 with Lo-Gain Board has hum...

    My Dynaco ST 70 with Lo-Gain board has a noticeable hum. I have Cornwalls so I'm sure they make it more noticeable, but the hum is related to a vibration in the amp. The left output transformer seems to be vibrating. Is it about to go or could there possibly be something else causing this: bad...
  13. D

    Stereotech 1200 hum issue

    I've searched for someone with a similar issue. I've read lots about hums with no help. My issue is that I have a hum from both speakers which gets louder as you increase volume. The hum is present with nothing else connected to the receiver and it's not a speaker issue. To me it sounds like...
  14. Moonwatcher

    Where to attach Miracord 770H ground wire

    Hi, The ground wire on my Elac Miraocrd 770H (the one with the strobe) came off, and I can't figure out where on the chassis to reattach it. I get a terrible hum. Anybody know where it goes? Thanks!
  15. Hammett

    Sony STR-6055 hum and low volume problem

    Hi all, I recently picked up an STR-6055 to go along with my STR-V4. They are very different units, with the STR-V4 being much fuller sounding, with a tonal balance that decidedly leans toward the lower frequencies. It is a joy to listen to as the treble is actually quite detailed, while not...
  16. R

    HDMI Buzz (Ground loop??) when connecting Laptop to Yamaha RX-V375

    Hey guys, so I've got an issue with buzzing from my speakers when I connect my laptop to my receiver via HDMI cable. My set-up is as follows... Outlet --- surge protector --- RX-V375 --- TV, PS4, 5.1 speaker set-up, HDMI cable for laptop The issue is, the buzzing only happens when I plug in my...
  17. Harlon

    Doctor, Doctor, I need help. I've developed a nasty hum.

    Finished my power supply build. After running things for a few half hour listening sessions the amp has developed a pronounced hum. This is a Maggie console. I'm using the tape inputs in the tuner chassis to run music through an iPad. I've done a number of things to isolate the source. Here's...
  18. Johnny_Law

    SX-680 humming changes with STK pack / treble and bass adjustment

    Here's a doozy. I received the unit with no lights working and the vu gauges pegged at 1 watt with the power on. I found that R401 had been replaced with a 1/4 watt resistor and was blown, so in went a 1/2 watt 33ohm resistor. I also had a spare pair of STKs which went in. I also re-soldered...
  19. patslice

    DIY Turntable Advice Needed!

    Hello everyone! I'm willing to start a pretty ambitious project: building my own turntable! I want to stay pretty simple with a classic look: a 33/45 belt-driven platter with solid wooden plinth and wooden faceplate. And I'm really loving this project so far! I do have a few technical...
    • patslice
    • Thread
    • bearing diy doityourself gearmotor hum motor platter pulley spindle turntable
    • Replies: 24
    • Forum: DIY
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