Horrible feedback thru my sub and stereo after tivo install (1of2 probs)

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I am so frustrated.

Moca not working 1st - Ill post separately.

I got this POS tivo after hours of comcast here.

The second the cable from outside is plugged in the stereo and sub get a horrible feedback - Its not even usable. WTF.

I dont understand where the interference could be coming from - they used the same lead to come into the house.

Thoughts?

 

ground cable looks ok....comes to the first connection in the box. I have no way to check but I have comcast coming out so they can rerun the ground and any wire that wasnt replaced. As far as Dish splitters it looks like they are using all new ones. The only thing they didnt replaced was the short run coming in the house from their new connection and the modem run which is in the basement - I will ask them to replace both of those - If that doesnt work...I dont know what to do because the Tivo is the last piece and I cant imagine its the box. Thanks for advice - After thinking it through I was thinking ground too - but we will see. Hard to get Comcast to help but I will see what happens upon my visit.

 

Comcast here....installed new ground wire - replaced all wires. We tested it directly off the pole too.....we changed the signal, very good connection with very little noise as well. Still horrible feedback. Cant figure it out....I guess its electrical, but why would it just start the day comcast installed their service UNLESS the bolt box is bad....which I guess is entirely possible. All I can do us buy another one and see.....I had doing that and returning but it may be my only resort.

 

Sure. Shoot the link over I'll check it out.

 

Actually connecting it directly not thru receiver. Using audio spdif cable for audio from TiVo to receiver. The HDMI is probably backfeeding thru the other HDMI that's connected to the receiver. Which in the end is connected to a coax that's connected to my sub that's causing the issue.

 

It's a ground problem. Check out attached pic.....This solved the issue. I broke off the ground on an extra power cord I had.

 

Subwoofer power cable..... The only other connections is the coax / single RCA cable going back to the receiver. The receiver has an HDMI cable connecting to the TiVo so untimately it's all connected and backfeeding. I may try to ground the Comcast cable splitter in the basement because maybe the ground they installed at the box isn't a strong ground. Or as someone above suggested a filter of sorts.

 

Id rather solve the issue lol...Not using it is 1 solution though

 

Ground loop isolator looks like it gets good results. Comcast added a moca filter....I don't even know if I need one but can I add this inline ....Just stack it on the other filter? Or can I just put it between the TiVo box and incoming cable? Or right at the sub? Maybe it'll work. Plugging I to different Outlet does stop it....It's a ground look issue for sure. Thought on where? I could remove moca filter. I am using moca but I believe it all worked fine before the moca filter.

 

Ordering the filter now....you could save the day. I dont know if I even need the poe filter but Ill leave it in place, and put the filter right at the box as you suggested. The second I unplug the coax from the tivo it stops....so in a prefect world this will solve it and like you said the reviews look good....im having the exact same issue! Thanks so much. Will order now and test by Thursday...