Los Angeles, CA
Lack of the 7th flash is usually indicative of a blown solenoid fuse on the rectifier board (in the lower cabinet). The lack of 43 volts that powers the solenoids will result in no 7th flash.
(Topic ID: 198510)
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Fathom uses the AS-2518-54 rectifier board. 43 volts should be present at TP5. If no voltage is present at TP5, double check F4. If F4 is good and you have no voltage at TP5, there is either a cold solder joint on the rectifier board, a bad bridge rectifier (BR2), a bad varistor (VR1), a bad 600 ohm resistor, or a problem with the transformer.
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