[1] IIRC the colour montor had RGB inputs each one of
which could be
pulled hihg. pulled low, or left floating giving a rather unuusal 27
hardware colours.
On the subject of the Color Monitor that was used with the CPC464, I am
looking for a replacement EHT transformer.
The monitor is the color one with the 5v cable to supply power to the
CPC464.
The unit had a failed LOP Transistor (Which I have replaced), but the
160V rail is still being dragged down, and I have no EHT on the anode
cap - I have removed all the secondary loads from the EHT, so I am
confident that the fault is within the transformer itself. At this
stage, I am suspicious of one of the HV diodes within the transformer,
but everything is epoxied.
Doug