stereo hiss

[holts91]

I have a 2008 Sundance 3300SK that had a Coby DVD/FM surround system in it that went bad. I bought a Sony DAV-TZ140 to replace the receiver. Now I have a hiss from both the DVD and FM radio. I bought a 60's noise filter from ebay, but that didn't work.

Any suggestions?

[holts91]

The sony worked at home so I brought an old analog 2 ch. receiver into the camper and hooked it up and there is no hiss on any of the speakers. A coworker of mine has a higher end DVD/tuner that he is going to let me try I'll post results next week. If anybody has any more thoughts please post them.

[holts91]

I checked it this weekend and the hiss is just in the right side. I took an extention cord and pluged it into the power box outside and still have the hiss. I brought the unit home and I will do more troubleshooting this week.

[YC_1]

There is a chance you may have some wires crossed a bit and causing a ground loop. Those can drive you crazy. Radio Shack used to sell ground loop isolators. Here is a link for the device that just might solve your issue.

Ground loop isolator

[holts91]

There was a ground on the Coby to one of the screws, so I did the same to the Sony and still got the hiss. I'll sand the the paint and try to get a better ground. Thanks for the advice and I'll let you know how it turns out

[Timay]

A bad ground or a ground loop. Make sure all the components are grounded together as well as to the RV ground.

Tim

[laknox]

jfkmk wrote:
I had a hiss when I installed an amplifier once and it turned out to be a bad ground.

Exactly my first thought.

Lyle

[jfkmk]

I had a hiss when I installed an amplifier once and it turned out to be a bad ground.