problem with static/carpet and HT rig - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 22nd March 2003, 06:58 PM   #1
diyAudio Member
 
leadbelly's Avatar
 
Join Date: Dec 2002
Location: Calgary, Alberta
Default problem with static/carpet and HT rig

Please help! I'm worried I'm gonna fry my receiver soon!

Problem: occassionally, touching some of the devices on my HT chain when have built up some static makes them go nuts (volume, static noise, resets). Case of receiver most worrisome.

Setup: Receiver + DVD + VCR + 2 sat rec, all 2 prong AC plug, all plugged into same surge protector, that plugged into same outlet. All are placed on a painted metal AV cart, which has rubber wheels, and laying on top of carpet.

What can I do? What should I be looking for? Checking if some of the devices chassis/cases are not grounded?
__________________
Aerodynamics are for people who can't build engines. Enzo Ferrari
  Reply With Quote
Old 22nd March 2003, 07:52 PM   #2
diyAudio Member
 
Join Date: Mar 2003
Location: Northwest
Is it a Harmon Kardon receiver by chance? I've seen a lot of them do crazy weird things. HK seems to use really marginal microprocessor designs for some reason.

The snap/pop in the speakers during a static discharge is difficult to get rid of in many systems but usually isn't very loud. The system should not, however, do erratic things!

I'd suggest spraying the carpet with an anti-static spray. They work well for several months but you have to re-apply them now and then.

You could also try a SINGLE ground point from the receiver chassis to the nearest AC outlet but you will probably have to put isolators in your cable/sattellite feed (if you have one) to prevent ground loop problems.

Finally, you could provide a grounded "touch point" near your system (i.e. the metal cart?) that has its own path to ground. You touch that first before touching anything metal in the system.
  Reply With Quote
Old 22nd March 2003, 08:01 PM   #3
diyAudio Member
 
leadbelly's Avatar
 
Join Date: Dec 2002
Location: Calgary, Alberta
No, it's an Outlaw receiver.

I thought of grounding the receiver case, and then isolating everything else, but how do I isolate the sat recvr coax gnd? It's a Bell (like your DishNet), so there's actually pure DC in the coax used to power the dish. Would a cheapo xfmr work in that case?

Thanks.
__________________
Aerodynamics are for people who can't build engines. Enzo Ferrari
  Reply With Quote
Old 22nd March 2003, 09:03 PM   #4
diyAudio Member
 
Join Date: Mar 2003
Location: Northwest
The dish isolation is a good question. I know you can get external power supplies which can be put between the isolator and the LNB but that's more expensive. You might be OK without isolating it. Cable feed ground loops tend to be more of a problem than sattellite ones.

You could also try running a ground wire from your receiver back to the ground used by the dish which still grounds the receiver but eliminates the ground loop.

As for Outlaw, that doesn't speak well for the ESD design of their receiver. Any commercial equipment shouldn't be affected in that way by normal ESD.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
how to stick the carpet underlayment? gychang Full Range 2 22nd September 2006 03:44 PM
Should I paint or carpet my loudspeakers? prerunnerv6 Multi-Way 10 17th May 2006 09:31 AM
Who gets sawdust on the carpet? Hybrid fourdoor Multi-Way 23 12th July 2004 09:49 PM


New To Site? Need Help?

All times are GMT. The time now is 06:14 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2