Troubleshooting Chart – Seidel Version
Problem Probable Cause Remedy
Upper displays not
functioning properly.
a. Cable problem.
b. 4 Wire jumper from
main board
unplugged.
c. Main ST8 eprom bad.
d. Circuit board faulty.
e. Note: Sometimes a
faulty display board
will damage the ST 8
eprom.
a. Check for proper
connection to main board.
Check continuity.
b. Check jumper for
continuity. Ensure wires
are not frayed as they
solder into main board.
c. Replace eprom – AAMC-
ST.
d. Replace tickets owed
board.
e. Replace both the Display
and the ST8 eprom at
same time.
Wheel not rotating. a. Motor unplugged.
b. Blown fuse in power
supply.
c. Loose or broken wires.
d. Motor faulty.
a. Reconnect motor to top of
power supply.
b. Replace fuse.
c. Check for loose or broken
wiring at connectors for
motor and main circuit
board. Check continuity
from plug to crimped ends.
d. Replace motor –
AAMO2700.
No coin
up sound
a. Switch bad in coin
mech.
b. Disconnected, loose or
broken wires.
c. No game sounds at
all.
a. Replace switch –
AASW2700.
b. Check connectors. Check
for continuity.
c. Go to No Audio section to
restore sound.
Game doesn’t
score.
Check for
coin up
sound –
Yippie Yahoo
At coin drop
Yes –Coin
up sound
a. Coin taking too long to
get to sensor board.
b. Slot sensor board not
seeing coin.
c. Slot sensor board bad.
a. Clean ramp.
b. Green LED should be ON
only when sensor is
blocked.
c. Replace chip – ULN2803
Replace board –
AABD9616.
Game scores wrong values
a. Game is scoring too
soon – before coin
reaches Slot sensor
board.
a. Slot sensor board is bad –
Align/clean sensors,
replace chip, replace
board.
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