Troubleshooting guide

Cinematronics Vector Monitor Repair Guide v.1.0
Page 22 of 53
HV ‘Upgrade’
If you have the discrete HV monitor it should be possible to fix it unless it’s a fault of the HV
transformer itself. I’ve never had to repair one of the ‘old’ style displays. The Keltron supply is the
gold box that is mounted on the side of the chassis, Keltron was the manufacturer. There is no
write-up on how to retrofit a Keltron box into the older style chassis although it is do-able. You
would have to remove enough components from the discrete Hi-V supply so that it’s completely
disconnected from the rest of the circuit. Then a connector for the Keltron would have to be wired
into the monitor PCB as it is in the newer version. A working Keltron would have to be mounted to
the chassis then connected up. Probably sounds easier than it is. Since the Keltron supplies a lower
voltage than the original HV, the overall brightness of the picture will be greater.
[Include image with replacement points]