noise

I have been experiencing a bad, loud, and variable noise in my electric guitar rig. Here is the details of the rig (I will include as many details as possible since ground loops are tricky): > Electric Guitar (active electric guitar with on-board buffer, 9V battery, and On-Board Effects Loop...

The abovementioned amp produces a random symptom, where sometimes while listening to a record, it starts popping (like static pops) followed by massive, extremely loud bang noises and continued pops. When powering down and disconnecting the TT, the phono input (both subsonic and regular) keeps...

My SX770 has a hissing noise only heard on the preamp RCA out on the left channel. It is the same volume regardless of how loud the volume is turned, and is present regardless of which input is selected. Any idea which transistor may be the culprit? Everything else works perfectly.

Hello and best regards! I have a JVC JR-S400 “Mark I” that is looking for some use. However, it doesn’t quite work as I had imagined. In and of itself, everything is almost fine, but there is always some sort of noise in the background that can also be influenced by changing the volume control...

Hello to everyone, I have a problem with my SA-606 (SA-6700 version for Europe): There is an hiss similar to white noise through the headphone output. In the past I did some maintenance: 1) Recapping - used Nichicon "audio grade" KA series (light blue sleeve) for everything but main filters...

(moved to Pioneer audio - my bad)

Hello everyone! I bought this old cd player because I heard great stories about 1541 dac, and this player in general. Anyhow, playing some discs I noticed some random noises in the music, and they are getting more common from mid to the end of disc. These random noses are really hard to...

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...

I have cleaned and relamped my Marantz 2220. All is working great except when I move the turner up and down the dial, at some points there seems to be some very light resistance where is sounds like the string is making binding noises. Not very loud but audible for sure. I have looked and all...

Hello everyone, First of all, thanks everyone for all this knowledge shared in this forum. I am restoring a Sansui 9090 early production that was not working. It had plenty of issues that I had to fix (some output transistors failed, driver board, protection, service bulletin not applied)...

Working on an amp that is noisy (110hz hum) and I’m measuring 250-300mV of ac ripple when cold dropping back to about 200mV when warm, off the power supply. I thinking this is too much and likely the source of my noise. Am I on the right track here or totally wrong?

Hi all, me again. Still trying get the noise out of my Nikko Alpha 450. I have posted about this problem and had some great suggestions offered, the problem however persists. As a recap, this unit had a bad main filter cap (there are 4) that had leaked and was no longer making contact with the...

I have my new LG OLED C9 TV connected to my hifi system. All hifi components and the TV's comes from a Monster HTS 2600 power supply. The TV makes the audio system hum, but only sometimes and whrn certain images are displayed. The hum goes away if I connect the TV to a different power outlet...

Hi All, having a weird problem with a Nikko Alpha 450 power amp I'm working on. I've posted here before regarding this amp and the suggestions were invaluable. I've re-capped the power supply as 1 of the big filter caps had leaked and wasn't even making contact with the board. The amp sounds...

Looks like il be adding to the fun as I am as well a STA78 owner that has crackling/popping out of only the left channel. After searching the forums, I put together that this is likely a bad transistor and decided to start doing a cold test of the transistors using super cold spray. During...

Hello everyone. I have an old Pioneer amplifier SA 710. It has always worked very well, but for this morning the Riaa channel (left channel), emits almost exclusively static noise and Crackles. All other inputs (tuner, tape 1 and 2, aux) work very well. The static noise and the crackles increase...

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...

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...

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...

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...

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...

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...

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...

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...

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...