Troubleshooting guide

Cinematronics Vector Monitor Repair Guide v.1.0
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THEORY OF OPERATION
To understand what goes on inside the Cinematronics monitor, we will first examine large general
groups of circuits. This will help avoid confusion and aid in a basic, concrete, knowledge of what
makes up the Cinematronics vector monitor. Having a good understanding of how the monitor
operates will greatly assist the reader in diagnosing and repairing their problems.
Unlike other vector monitors such as the Electrohome G05, or Wells-Gardner 6100, the
Cinematronics Vectorbeam monitor is comprised of a single PCB that spans the width of the
monitor frame. The Cinematronics monitor, while initially looking like a large mess of
components, can be divided into two basic sections: one is the deflection amplifier and the other is
the voltage and cathode drive circuits (the HV) – just like other vector monitors. Some of the
descriptions herein may be a bit confusing at first. Hopefully after reading the entire document,
things should become clearer. Grab some schematics and follow along.