I've already done that & yes, all components check out right up to the video driver. I thought you were talking about video signals.
Anyhow, some other forums have suggested that it may be caused by corrupted bios. The bios is proprietary so there's no way to reflash unless you're an authorized service center, which have all but vanished.
well put simply, if the AB line goes from high to low when you select modes,
thenit's good.
and if the 3 inputs on each channel look similar then they are probably o.k.
leading to the question - where does the signals for the fms6418 come from?
There's no mode select; the Composite (yellow RCA), S-Video, and Component run simultaneously so I can't do any selection or on/off except for power. But you gave me a good idea to look at the output pins.
BTW, another guy has one of these and thinks his has a bad L2. He says if he touches it, it intermittently works. I guess it could be a bad coil, but not likely. I'm fairly sure it's the blob of crap underneath it that went conductive - or even a cold solder joint.
Any reason to change out any of the non-electrolytics? What about the dual Schottky rectifiers or the TOP249Y Switcher? Do they get weak over time?
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