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Vintage Engr · 6th Jun 2021, 12:51 pm

Thanks to all those who viewed this post, obviously very few service manuals still out there! I don't remember whether any supplements were ever issued that might show the rear input/output board differences.
I think I will have to therefore modify the PCB to fit the only diagrams available.

It s the Y/C and composite video inputs that are different on the board I have. For some reason, on the S-Video input socket, there's some extra passive component circuitry, that takes off the chroma & luma, to another connector (not shown on either the PCB layout, or the circuit) which then goes off to who-knows-where. As a result of this, if I hard-wire the main edge-connector to the mother-board, as per the cct diagram, I end up with a double-termination of both Y & C, all rather odd. I shall just have to trace out where the video goes to, & hard-wire it accordingly. By then someone will have come up with an amendment diagram...

Dave.

6th Jun 2021, 12:51 pm	#2
Vintage Engr Heptode Join Date: Jan 2008 Location: Shrewsbury, Shropshire, UK. Posts: 842	Re: Panasonic AG 7350 Thanks to all those who viewed this post, obviously very few service manuals still out there! I don't remember whether any supplements were ever issued that might show the rear input/output board differences. I think I will have to therefore modify the PCB to fit the only diagrams available. It s the Y/C and composite video inputs that are different on the board I have. For some reason, on the S-Video input socket, there's some extra passive component circuitry, that takes off the chroma & luma, to another connector (not shown on either the PCB layout, or the circuit) which then goes off to who-knows-where. As a result of this, if I hard-wire the main edge-connector to the mother-board, as per the cct diagram, I end up with a double-termination of both Y & C, all rather odd. I shall just have to trace out where the video goes to, & hard-wire it accordingly. By then someone will have come up with an amendment diagram... Dave.