[mythtv-users] pvr-500 strange lines

[Steve Peters - Priority Electronics]

-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of JJ
Sent: Thursday, November 29, 2007 5:56 AM
To: Discussion about mythtv
Subject: Re: [mythtv-users] pvr-500 strange lines


Steve Peters - Priority Electronics wrote:

>-----Original Message-----
>From: mythtv-users-bounces at mythtv.org 
>[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of JJ
>Sent: Wednesday, November 28, 2007 5:42 AM
>To: Discussion about mythtv
>Subject: Re: [mythtv-users] pvr-500 strange lines
>
>
>(snipp)
>Looks exactly like a ground voltage difference in the two units, can 
>you
>possibly
>ground the computer case to the unit, that *should* eliminate your shock
>potential between them, and possibly clear up those 60-cycle bars in 
>your video
>    I've had these issues before also, especially on my long 50-foot run of
>s-video cable, hum bars in my video, grounded both systems to each other
and
>my video cleaned up! HTH Cheers, John
>_______________________________________________
>mythtv-users mailing list
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>
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>12:29 PM
>
>
>
>Hello, and thanks for the replies. I had no idea is was a bad idea to 
>send an attachment. Sorry about that one. How do I go about grounding 
>them? As far as I know, the house is grounded already? I've been 
>thinking of getting a battery backup incase of power spikes. If I plug 
>both the computer and the cable box into that, do you think that would 
>ground them? Could that fix my problem? -Thanks
>-Steve




UNBELIEVABLE!!! I found an unused apc battery backup from my work office and
brought it home. It didn't fix the problem. New power cables did not work
either. Unplugging the nearby wireless router didn't change anything either.
I unplug the 120mm system fan power cable (with the server turned off of
course) and all of a sudden, reception from the digital cable box and from
the analog cable feet is just absolutely perfect. Of all things, I didn't
think the system fan would be the issue.

My only concern now is that the system is a few degrees hotter now. I do
have another 120mm fan from another computer, a slower one (this one spun at
2200rpm), I think the other is an 800rpm fan. I just hope that when I plug
it in that the reception doesn't go bad.

-Steve