ground loop

New to me 2000x. After thorough clean and deox of all switches, I recapped and changed all transistors, diodes and zeners. Found a pesky open on a trace that looked good but wasn’t (I jumper wired it and she started to sing on that left channel finally). It took me a month and guidance from...

Hi all, Brandnew to this forum. Ive been a phono listener for years and enthusiastic guitar pedal builder. So I thought let's try and build a tube preamp for my TT. And that's where trouble starts. I've build a Chinese Ear834 clone, but I'm getting 50hz hum when playing. The preamp does...

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...

This is somewhat me circling back to an issue I was having months ago. I've been working on a Marantz 1200 on and off for a long time. I'm convinced its possessed by the previous owner at this point... The issue: -Ground loop-ish hum on the right channel only (next to the transformer)...

Hi Everyone, Hoping I could get some help with an issue that recently started occurring on our older turntable. I am getting a very loud, low feedback noise when I turn on. It does not happen consistently. I've tried reseating and replacing the needle altogether to no avail. Any tips? Here is...

A friend of mine builds tube preamps. After listening to one of the designs at his house, I had to bring one home it sounded fantastic. Clean, clear and dynamic. No issues...yet. I bring the preamplifier home. I proceed to remove my solid state preamp, and in place of that I put the new tube...

I am working on a system which includes a Technics SP-15 turntable with an Audio-Technica ATP-12T tonearm and an Ortofon DJ cartridge. The tonearm is connected to a RANE PS 1 phono stage, which has balanced outputs. This setup was once connected to a computer with an Echo Gina 3G audio...

I recently acquired A very nice condition and well working Tandberg Solvsuper 10. It is a late model with power button and AFC. produces 6-8 watts per channel, with 30 watts peak. I'm running it to RadioShack Minimus 7 pair and a Theater Solutions Sub8S with very good results in a small space...

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...

Hi, I had a previous post about complete hum on phono. So I bought a new receiver ( new to me) Everything works except phono. Now I can hear very faint music and a hum. I had my cartridge refurbished by Sound Smith and upgraded from a MMC 5 to an MMC 3. I have tested the arm sockets and the...

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...

Hi guys. Quick question. I've got a Thorens TD125 MKii is very very good condition. Using the original arm, it's running an Ortofon 2M blue. When I had it serviced, my technician installed female RCS plugs inside, so the RCA cable from the table to the phono preamp can be changed as...

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...

I recently had a motor pulsating noise from my AT-LP120 and replaced it with a new motor this week. It was a simple swap with two connectors and two ground wires to re-solder - no biggy right? Now it has a constant ground loop buzzing noise that won't go away. I did the internal grounding...

Hi so I bought two Art EQ355's and they both give me a 60hz hum with my subwoofer and I have connected the eq on different circuits and it still does it I even disconnected all audio inputs to the eq and had the sub connected to the output of the eq and still get a hum I have heard about ground...

As the title states I discovered- and solved- a ground loop issue I didn't notice was there until I upgraded my cables. Went from generic bestbuy brand to Audioquest and immediately had a hum in the speakers. Plugged my amp into the same circuit as everything else and the speakers are whisper...

Hello, I have a Samsung plasma TV, which is only connected to my APC power strip/conditioner for power and my Marantz NR-1604 AVR via HDMI. The Marantz is connected to an external preamp via preouts, which is going through an Emotiva poweramp. After disconnecting/unplugging each of these...

I have had a slight hum/buzz in my right channel speaker for some time now when playing my turntable, and I am really wanting to get it sorted. I just bought and set up a fisher 500c to replace a cheap harmon kardon stereo reciever, and the hum has been present in both receivers when using my...

I was recently trying to digitize a few records of mine when I came across a problem. there was a noticeable "electric" sound in the recording when my computer was turned on. I have everything plugged into a tripp lite iso- which I hoped would solve the problem but didn't. i assume it is being...

so I have a Sansui 881. I decided to recap it earlier this summer and it had been working fine. Over the weekend, I sat down near my speakers while no music was playing and started hearing a persistent ticking/flapping sound. It's not a hum but a cyclical ticking sound. If I had to guess...

Heya Fellas' Ground your pre-amp to the ground lead of the turntables power lead, the end that plugs into the rear of the turntable (I just wrapped a cable around it and forced it in :P), as well as the regular ground post. There must be a resistance between the ground on the power lead and the...

Hi Folks, perhaps someone else out could offer a suggestion as to what might be happening here. The issue is this: when I ground my deck & / or tonearm (the deck and arm have separate ground wires) to anything, be it the back of the amp, a radiator, a screw into the wall whatever. I get a...

I seem to have a weird ground loop problem. I have a Dual 1245 running through my Marantz 2238B. I usually plug the TT into one of the power outputs on the back of the receiver. For a long time I had not problem. Now, however, if the unit has been off for a while, when I turn it on again I get a...

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...

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...