The only time I've had a TEC go dead was leakage on the circuit board inside. Some machines may not light up if they have printer failure, so check that the printer is not jammed. Otherwise, it may need to go to a dealer to have the board tested.
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If anyone is looking for a TEC MA-1350 manual, try here:
http://the-checkout-tech.com/manuals2/cashregisters/tec1.php
Mark
February 2010
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