Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Trying to figure out the source of line-out hum
Trying to figure out the source of line-out hum
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 3rd March 2012, 08:41 PM   #1
Fusion916 is offline Fusion916  United States
diyAudio Member
 
Join Date: Feb 2012
Default Trying to figure out the source of line-out hum

Not sure if this is the right place to post this but I think this is the most appropriate sub-form.

I have a SNES in which I am using the RCA line level ports for audio into a pyle pro amplifier. When using the SNES, only when powered on, I get a substantial hum in the audio. However, when I hook up my roland SC55 to the amplifier is it crystal clear.

Both of these devices are hooked up to the same plug in the wall. So we can rule out some AC line interference (or the Roland SC55 is handling the interference better?).

What else can cause my SNES's line out to hum badly? Could it be the DC adapter used for the SNES? It's not the official nintendo one. Can a power supply rail effect line out? Could it just be a shitty onboard preamp/mixer? How do I go about debugging this? I want to make this my first hifi project. To fix this hum.
  Reply With Quote
Old 6th March 2012, 10:03 AM   #2
epicyclic is offline epicyclic  United Kingdom
diyAudio Member
 
Join Date: Jan 2012
Only thought i have is ......

are the outer rings of the RCA plugs making a firm contact with the sockets outers . I have had to sqeeze a few plug outers with a suitable pair of pliers to make them make a good contact . An idication of this is when the plugs slide on easily , ideally they should have a firmish scraping feel.
  Reply With Quote

Reply


Trying to figure out the source of line-out humHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Decca + hum + line trafo = CMRR? d to the g Analogue Source 3 17th March 2010 09:13 AM
Buzz Hum Aleph 5 with computer as source, no good results with GLI zigo3 Pass Labs 3 20th February 2008 01:26 PM
source selector / volume hum in Aikido cbutterworth Tubes / Valves 1 28th March 2007 08:34 AM
Looking for tips to identify hum source in a active crossover ninjanki Parts 1 26th January 2006 10:17 AM
Noise figure vs signal source resistances in JFETS datasheet rlim Solid State 25 19th December 2003 08:11 PM


New To Site? Need Help?

All times are GMT. The time now is 09:34 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki