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noise

  1. John Trieu

    Need help identifying parasite noise

    Hi there, I'm new to the forum and the audio world, please indulge my amateurism. I spent couple of days checking YouTube videos before someone recommended me to ask the question on a dedicated forum, so here I am. Context: I got an amplifier from Elekit (22 HYBRID TUBE AMP) and two speakers...
  2. ocdecio

    2238B noise on power amp (both channels)

    Here's something that is puzzling me. It is a spiky wave 20mV / about 520Hz with the amp running in idle and shorting plugs at Main In. The noise was there before replacing capacitors and diodes at the power amp and power supply. I doubt it is anything at the amp itself since both channels...
  3. G

    Dual 704 problem

    Hi guys! I really love my Dual 704. Sounds great and it's really reliable. There's one thing though that's bothering me and it's that cracking noise when I move the tonearm into the starting position. I opened it up and put some contact cleaner onto the switch that's released when the tonearm...
  4. Nickersby

    Sony TC-355 with a noisy left channel

    Hi, I've just bought this old reel to reel. There is lots of white noise on playback on the left channel. The noise is not present when recording and monitoring from source so I assume the amplifier section is ok. It is present when the source is "tape", and can be heard before the tape engages...
  5. Raphaz

    Crackling noise

    Hello fellow Audiokarmians, I get crackling, scratching noises, on both channels, on both receivers. It's not constant, just every now and then. It can be dead quiet (when nothing is playing) for half an hour and suddenly, without me touching anything, it goes... "chrrk cr crkck chg chk" a...
  6. 4343

    Yamaha P2100 Noisy on Power-On

    My P200 has started crackling when I first turn it on. After a while it stops making noise and sounds clean for hours. I think this must be a capacitor, possibly in the signal path. Has anyone seen this symptom before? Any ideas that can point me in the right direction to repair it? I'm not...
  7. E

    Rega RP6 has one noisy channel

    Hello all, I have an RP6 with an RB303 arm and Neo PSU. I'm getting a lot of noise in the right channel only, through my tube amp. I have traced the noise to the right channel of the table. No change in the noise if I unplug the power supply, no change in noise if I try to touch a ground wire...
  8. 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...
  9. SingleReel

    Luxman L-100 woes

    I have owned this Luxman L-100U for about two years now and it seems this unit has been nothing but constant trouble. I know it was serviced before I purchased it and it immediately had problems. I decided to have it serviced by a long time professional and he claimed the last Tech did him no...
  10. M

    Dali Zensor Vokal Noise

    Hey there! I've recently noticed that the second hand Dali Zensor center speaker I got sounds distorted at certain frequencies, like deeper voices, and gets worse with higher volume. I inspected the speaker and found when I gently press on the cone of the left side speaker, it makes a crackling...
  11. J

    Electricity causing buzz?

    Hi all, I recently moved to a new apartment and have since been experiencing something odd/annoying. My stereo setup (Sony TA-555ES - Dual 505-2 - KEF Q350) has started producing frequent high pitched buzzes, and I have a strong suspicion this has something to do with teh electricity wiring in...
  12. A

    Radio - noise on audio amplifier

    Hello everybody! I was given as a gift an old stationary radio made in Romania. Aesthetic it looks good for its age. I switched it on but it was heard only a noise and very weak sound. Both potentiometers for tone and volume were broken. There is a liniar design and I used one of those that I...
  13. tlite

    Crown XLS 1002 Causing Hum In Circuit- help!

    Hi There, Just got a used Crown XLS1002. When plugged in to any outlet, strip, or power conditioner I have available near my receiver, it introduces hum (not hiss) into the speakers. Using a new Integra 3.4 receiver. Worthy of note- the Crown didn't come with a power cord, so I tried two...
  14. pasgal

    AU 555 - small noise right channel

    Sorry for my bad English, I'm Italian. Dear friends, all the capacitors have been changed, except the 4 large on the left and 4 small ones in the selector module (aux1 / Phono etc). The old little noise, on the left channel, very small but can be heard at night, has not gone away. My AU555 is...
  15. C

    Sansui AU-717 Deoxit F5 all potentiometers?

    I got my AU-717 rebuilt but I am experiencing left channel drop out. Adjusting the balance control, or even applying a little pull pressure returns the signal until the knob is adjusted again. Going to apply Deoxit F5 to that potentiometer but wondering since I know the amp has sat unused for...
  16. zezima

    Pioneer SX-636 high pitched noise / feedback in PHONO channel

    Hi y’all, first time long time.. I have been using a SX 636 for the past year, initially just with a tape deck and AUX cable (phone) while I was waiting to ship my record player (LP120-USB) to myself from storage in my home state. Once I got my turntable successfully shipped and began using...
  17. M

    Marantz PM-551 - buzzing, noise, distortion

    MaliD Hi, Maybe somebody will be willing to help me with this problem. My Marantz PM-551 right channel started to make some weird inconstant buzz that is present even without any music or sound played. When I connect just left channel output to a speaker it sounds perfect. Here you can hear it...
  18. G

    KA-7100, only get sound with Tone Defeat engaged

    Hello Everyone, I recently started working on a KA-7100 that I found on the sidewalk several years ago. I used a DBT and it started up okay. Initially sounded pretty scratchy and dropping out, but Deoxit on switches and pots + manipulation seemed to clean it up nicely. The one thing I found is...
  19. Alexeifox

    Issue on a new (for me) AU-666

    First of all hello and good morning everyone! i bought this amplifier a couple days ago in great condition and it really sounds amazing other than the fact that there is some extremely strange things going on inside. When no input is plugged in everything is dead silent, but the moment i plug...
  20. IEHAGY

    Need Help Trouble Shooting a hissy juicy music pre-amp

    Hi. I don't post hear much cause I am total novice with any thing under the hood of my system, but I appreciate all the wisdom on this board. My issue is that my beloved Juicy Music Extreme preamp is giving off a loud white noise hiss noise floor in both channels capable of being heard up to...
  21. RICK KING

    Pioneer SA-9500 : Troubleshooting Noise

    Hi, I bought the SA-9500 new in early 1977, but pretty sure it is a 76. I have never serviced it. It sat from about 1990 until last year (2020) when I brought it out to use with my phono system. So was used almost every day for 16 years. I opened up and did basic cleaning and once pots and...
  22. A

    Does anyone recognize this odd sound?

    I recently plugged in a vintage power amp and preamp. I got close to the right speaker I can hear the noise that you'll hear in the video that I posted the link to. It's a very quiet distortion/hiss sound. After swapping through cables switching speakers around, I figure that the culprit must be...
  23. D Beeby

    Adcom GTP-400 and GFA-535 II - loud popping / shrieking when touched

    Hello folks, This is my first post, so thanks in advance for your advice for a newbie... I have (what-I-want-to-be) a nice Adcom setup, but it's really behaving badly. I thought it might be a bad interconnect, so I changed them all. When I touch or tap the top of the GTP-400 (literally, if I...
  24. Raphaz

    Sansui AU-555 — Hiss

    Scored a Sansui AU-555 in somewhat decent cosmetic shape. It had some crackling on some of the volume/balance knobs and some outings. Gave it a nice cleaning/lubing inside and out. Looks like a very solid built machine and, considering the stated 20W/Ch output, has plenty of punch. Sounds very...
  25. DaveFloyd40

    Computer Noise

    Hi all, First of all allow me to apologize if I am posting this in the wrong forum but it does relate to watching films, etc. through my Hi Fi. Granted I am using an old system, a Quad 303/33 setup with Beovox 5700 speakers. It all sounds great, especially when playing a CD/DVD but as soon...
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