Posted By
JamesC
on 2003-03-15
|  TED -->
is the graphic-producing chip. It is inside the metal cage on the motherboard. It has numbers 7360 or 8360.
TED also produces clock signals for the CPU (7501 or 8501), produces sound, and refreshes the RAM (memory) chips.
Of course, with a completely black screen, you could have a deceased CPU or a bad video cable. TED is most likely the cause, though.
The only known source for replacement TEDs and 8501 CPUs is from other Plus/4s, C16s, and C116s. Commodore did not use them in any other equipment, and they were not sold for wide-scale use outside of Commodore. You might come across them in hobbyist products but that would be a rarity rather than a common occurance.
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