High Pitched Buzz from CRT tv when muted - this after installing a new surge strip...

[The Stigenator]

I am 'remodeling' my living room. Gone is the old beige heavy show case, now I got a new expresso colored tv stand. I am currently waiting on my 50" Samsung Plasma TV but due to a screw up at Best Buy, I have to wait a few more days for it to arrive.

Anyway I am using my old 32" Panasonic CRT in the mean time. I removed the old white powerstrips and installed a Cyberpower 1080 10 outlet powerstrip instead.

Amazon link: http://www.amazon.com/Cyberpower-108...AY3H87CHE7B9E3

I have not reassembled the rest of the home theater so currently I am running the cable in and out of the surge strip (for filtering) and I have the cable directly connected to the tv. No cable box (will be installed back when the plasma gets here). In the mean time I hear a 'swoosh' sound when changing channels and a high pitched whine when the tv is in mute.

I am wondering is the new surge strip causing that. I know its got EMI / RFI filtering. I can tell that the video looks a lot crisper than before, but I dont know whats causing that sound. I am afraid its going to drive me nuts when I install the new tv.

 

[novasatori]

do you hear it with the cable unplugged from the tv?

http://www.audioholics.com/tweaks/c.../ground-loops-eliminating-system-hum-and-buzz

a cable box might fix it if you are planning to hook one up, or possible a free filter from the cable company

 

[The Stigenator]

I removed the cable tv connection going through the surge and connected it directly and the problem went away.

 

[The Stigenator]

Ok it's not yet fixed. It's still making a buzzing sound when muted. I find the channel buzz when changing channels is audible at higher channels 30+

Ugh

 

[guachi]

I suspect the high pitched whine is the sound that pretty much all CRT TVs make. It's the mark of not being old and having bad hearing if you can hear it.

You are likely hearing a subharmonic of the horizontal flyback frequency at about 15kHz. It gets louder as your TV gets older.

 

[alcoholbob]

I suspect the high pitched whine is the sound that pretty much all CRT TVs make. It's the mark of not being old and having bad hearing if you can hear it.

You are likely hearing a subharmonic of the horizontal flyback frequency at about 15kHz. It gets louder as your TV gets older.

This.

The high pitched whine gets more pronounced as a CRT gets older.

 

[guachi]

Stigenator, for someone who joined in 1999, you are probably in your 30s or close to it. I'm surprised you've never heard this sound before on your parents' old mono TV with faux wood grain sides from 1985.

 

[Modelworks]

I am wondering is the new surge strip causing that. I know its got EMI / RFI filtering. I can tell that the video looks a lot crisper than before, but I dont know whats causing that sound. I am afraid its going to drive me nuts when I install the new tv.

Without using the surge strip on the tv power or cable connection what does the picture look like ?

Also take a look outside to where the cable wire attaches to the home and make sure they connected it to a grounding block and that the block has a ground wire that goes back to the homes ground. Cable installers are notorious for omitting the blocks or not grounding them because it takes more time than some installers want to spend.