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Since this TV has a transformer, it should be possible to bypass the IF and inject composite video and audio. If I understand this correctly, I should be able to remove the IF module, connect the composite to C1 and ground, then connect the audio to connection 4 of the sound module and ground. To reverse it, I just remove connections and reinstall IF module.
The input voltage of the sound module is .25V, down from the SIF out of .47V going through L215. I believe the fixed audio out of a DVD player can be as high as 2V, so will something need to be added?
I'm attaching the relative portion of the schematic and circled the points of connection.
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Pioneer SX-1080, Pioneer PL-115D, Pioneer CT-F9191, Pioneer RG-1, Wollensak 8050A, Akai 4000DS MkII, Pioneer CS-05 & Polk 1.2TL
Denon 5803A, Pioneer DVL-700, Pioneer CT-W603RS, Toshiba HD-A3, D-Link DSM-520, Dish VIP-722, Polk 1.2TL, CSi5, LS/fx, RT-800 and PSW-650
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