I think the A520 is a very crappy piece of hardware. Only the minimal components in order to the MCP1377 do its job.
Converting the unit to S-VHS out is a very clever hack, it gives you an infinite better quality and sharper image and it's an inexpensive hack. Only 9 resistor, a ceramic and an electrolytic capacitor, some wire and solder and you are in business again. :-D
The necessary
link!:rtfm: