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8: Troubleshooting
Use the following guide to help solve issues you may encounter while
using the TPG with an arcade monitor.
The monitor will not sync.
•
Try both sync polarity combinations. It is recommended to first use
-H/-V, and if the monitor will not sync, then try +H/+V.
•
Check your sync connection between the TPG and chassis to ensure
that the polarity matches (-sync connected to -sync input on the
chassis, +sync connected to +sync input on the chassis). Most chassis
follow the standard Wells Gardner input pinout (from left to right) of:
R, G, B, GND, +V, +H, n/c, -V, -H
•
Some chassis will not sync properly if V is connected when being fed
composite sync. If your test cable has a separate connector for sync
(recommended), try turning the sync connector so just the H pin is
connected.
•
If you are sure the sync is connected properly between the TPG &
monitor chassis, then the hold/sync pot on the chassis may need to
be adjusted slightly to lock in the picture. If there are two adjustment
pots on the chassis, start with vertical, then horizontal hold.
No picture.
•
Check that at least one of the three R,G,B Dip Switches=ON.
•
Check battery voltage with a multi meter, a reading of at least +6.5v is
needed for stable operation of the TPG.
•
Check that the resolution DIP switch matches the monitor type you
are testing (Standard or Medium resolution).
