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Originally Posted by Electronic M
Got an oscilloscope? you can compare video level of your source to points on the schematics and or chip data sheets.
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Unfortunately, I don't have a scope. My electronics expertise is definitely not enough to warrant owning such a tool. Of course, I'd love to have one anyway.
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You may be able to get somewhere by looking at the chip data sheets on the daughter board, following the traces to chips on the mother board and looking up the data sheets/schematic info for those.
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I'll give that a try, but somewhat doubt my ability to decipher this from the circuit boards. If I had the circuit diagrams, I'd have a fighting chance.