[dvdguru]

Ok, I have the 50HD7uy now whichl I love but it has no internal tv tuner. So, I hooked up my old vcr and it's introducing an audible hum from my subwoofer. Thinking it was because the vcr was old I went and bought a new vcr and got the same audible hum through the sub? The vcr audio is hooked up into my video 1 input of the receiver by rca cables and I even tried switching to input 2 and still have the hum.


I checked and the hum is ONLY PRESENT when the vcr is hooked up. So, what are my options here? Is there another way to hook up a tuner or is there a way to get the hum to stop? Any ideas why this is happening with vcr's?


Thanks for any advice or info...

 

[tws1972]

Do you not have a sattelite receiver? Which of course will act as a tuner.

 

[Cholerabob]

Sat box (Dish, DTV, others), cable box

 

[BruZZi]

Quote:

Originally posted by dvdguru Ok, I have the 50HD7uy now whichl I love but it has no internal tv tuner. So, I hooked up my old vcr and it's introducing an audible hum from my subwoofer. Thinking it was because the vcr was old I went and bought a new vcr and got the same audible hum through the sub? The vcr audio is hooked up into my video 1 input of the receiver by rca cables and I even tried switching to input 2 and still have the hum. I checked and the hum is ONLY PRESENT when the vcr is hooked up. So, what are my options here? Is there another way to hook up a tuner or is there a way to get the hum to stop? Any ideas why this is happening with vcr's? Thanks for any advice or info...

That's a "Ground Loop" caused by the cable feed.


2 Solutions:


1) Use a "Cheater plug" (3-to-2 prong) on your subwoofer power cable
http://www.business-supply.com/produ...e/EB021764.gif



2) Check out the following link for another solution:

http://www.dplay.com/tutorial/cablehum.html#atten



.

 

[slb]

Sounds like you have a ground loop problem. Make sure that all of your equipment is plugged into the same circuit. Also make sure that the TV cable is properly grounded at the box where it enters your home (there should be a ground wire connected to a rod driven into the ground somewhere). If not, call your cable company and ask them to fix it. Lastly, there are some special RCA cables available for subwoofers that have the shield connected only at one end to help eliminate ground loops. You might want to try one of those to see if it helps.


Good luck,

Steve


Edit: Oops! Bruzzi beat me to the punch! Damn my two finger typing!

 

[dvdguru]

Thanks for the info and I'll check it out. I have the TWC HD DVR which only has the component outs turned on and analog looks terrible over component. This is why I need another tuner.

 

[dvdguru]

Also, I have the sub plugged into a surge protector and the surge protector has the 3 prong plug going into the wall socket. So, that's not enough and the 3 prong plug must be attached to the sub power wire itself?

 

[Joxer]

Disconnect the cable coax cable and if the hum goes away its better to use a cable isolator. The cheater power plug can be dangerous that makes it possible for you to get an electrical shock! I got a cable isolator for $12 and it works great eliminating such hum and it also includes a high voltage protection circuit too.

 

[dvdguru]

thanks, I'll check that out and report back.