Channel info pixilated, distorted, HD works intermittently

As you mentioned, recording on left channel is correct but monitoring on left channel is distorted, the problem seems in the Power Amplifier section / output stage. See the block diagram given on page 29 of manual.
PHONIC HELIX BOARD 24 UNIVERSAL USER MANUAL Pdf Download ' ManualsLib
It may help you.

Sorry no answer but can confirm I have the same issue with a DMR BS750 (same machine smaller hard drive ) connected to a Panasonic TX-L37G10B. DMR no BBC1 but BBC 1 ok on the TV have you had any luck with an answer?
[email protected]

The problem will be in the power amp for the the left channel. One you have identified this on the circuit board you can compare the channel with the right. As they are both the same. Start with a visual check. If anything looks odd compared with the the right replace it. Distortions are often caused by a burned resistor. Though the main power transistors or IC can cause it too. If you can't find anything visual I would replace the main output device(s) for the left channel.

hi sounds like the av sender inside the ps could be getting dodgy, have you tried it on another tv?

Check in the manual or with the manufacturer, but the TV should auto configure the picture based on the signal.
I have a Toshiba that does the same thing.

There is no mistake when HD is in effect, as the picture is superb.

sounds like it is overloading try replacing the all the wires with a bigger gauge if it still persists check the speakers individlauly

Check all of your cables on the back of the tv and your sources such as Cable,Sat box and DVD palyer to make sure they are fully inserted into the input and output connectors. Some times Component cables will work loose and you end up with a missing color. Temprature changes can affect intermittant connections. If that does work then you have a bad Main bd.

Check out the Bias resistors in the that channel then compare with the right. You might need an Ohm meter to do it, but the resistor(s) could look burned.

Receivers like this will incorrectly decode rear channel audio and pass it on to the rear channels as distorted audio. Make sure the source being used really has rear channel information encoded into it. It could have other issues but check this first.

I suggest you switch your speakers and test again , if the same happens , ship it it can only be an output problem >>>>Good luck