Posted By
TLC
on 2009-10-14
16:50:56
|  Re: No Video Output?
I suggested using the monitor because most modern TVs (...better said, those with digital controls) most probably disable the screen if they're fed by some nonstandard videosignal... so he won't see practically anything but the TV's message about no valid videosignal... "old" monsters usually don't do that  . It should somehow be determined if the computer produces absolutely nothing, or if it produces "something"... For PAL machines that's usually way easier... In a PAL machine, if you have a working oscillator and an at least partially working TED, that's already sufficient to get a black screen on a perfectly valid videosignal. As it seems it's not the case with NTSC machines (a bad coincidence of the TED defaulting to PAL mode and the machine providing an NTSC crystal... I hadn't remembered that first), so at this moment we don't know exactly "where" the problem is... not being in tune with the RF-modulator's channel, absolutely no RF signal provided by the computer, or all these are O.K., but the computer is "dead" in a digital meaning, with varying reasons but usually from a processor failure.
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