On Tue, 23 Nov 2004 15:41:56 -0500, "Radford"
wrote:

The display will only show in Black and White. No color! The user said that
the unit would not turn on but when we got the unit it did turn on. The
only schematic that we have is for the CTC176 which came from the
Electronic Servicing & Technology magazine. (PROFAX 3108 CTC176) Do not
know how close the schematic is with this unit. We check the Color kill
pin on the T-chip and is was at 3.6V. We do not want to invest in the
repair manual because this is the only unit that the University has. Have
not check yet for the 3.58 MHz reference osc. Any thoughts on what could
cause this problem would be greatly appreciated.

I think the schematic will be pretty close overall, but who knows if
it is close with the circuitry in question. Did you check the
crystal's solder connections? What about the capacitor in the crystal
circuit? Freeze the T-Chip? Do you have a crystal tester, or one to
swap in?

Tom