Originally Posted by bus7821
My unit is most definitely a two tuner pip. The date on mine is April 2004. Could it be that they upgraded the units and never fixed the sales literature to reflect the second tuner?
The closest thing to a defect with mine is that the levels on the line level sound outputs are very low. I have a pair of wireless headphones which work fine with everything else that I own. When I used to run them off the Zenith, they would drop out from no signal unless I turned the TV volume all the way to the top.
It is possible that they just never fixed the literature in the manual to reflect that it does indeed have 2 tuners in the unit.
Mine was made in September 2003, and has 2 tuners.
Anyway, about the wireless headphones. I think with the front input for headphones(if this the one you are using. The 3.5mm plug under the front door flap), has VARIABLE AUDIO OUTPUT. This means that audio output is adjustable through the volume level of the tv.
Unlike FIXED AUDIO OUT which is set at a comfortable level at all times, and is adjusted by the source receiving the audio. Like a receiver. Or in this case a set of wireless headphones which may have there own volume control.
This may be true of the AUDIO OUT in the back as well.
In the menu, there appears(I never use the audio out, so I am not 100% certain on this) to be a SEPARATE VOLUME for the headphone out.
It is symbolized by a headphone looking logo, followed by a volume control.
I think if you adjust that, you audio problems may be fixed. It appears to be a separate volume control for headphones, and not the speakers of the tv, which is controled by the main volume control.
This is just a guess since I don't use wireless headphones with mine.
I will try to dig up the manual, and see if it explains it there.
If I find it, and you still have yours, I will point you to the page in the manual where this info is discussed.