Question about Stairmaster 4400 PT Stair Stepper
Check the voltage output of the power supply. It should be over 12 Volts DC. The following link will take you to a video explanation of how to use the required meter on your power supply.
Video about Multimeter Testing
Posted on May 21, 2014
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Posted on Jan 02, 2017
Unplug dc power connection then remove right side panel check for loose connections on on alternator, check distance of speed sensor to speed sensor disc you should no more than 3 credit card distance between them. Next remove the black wire from the B+ terminal on the alternator, then remove the brown wire from the field terminal on the alternator.Place a short wire with alligator clips between B+ and field terminals start stepping for about 10 to 15 second you should full resistance in that case its the upper console that if not replace alternator
Posted on Mar 14, 2010
Remove console knobs form the back of the console, lift the up, and disconnect the 20 pin cable from the console. Get a multi meter go to dc volts 100v range. On the connector you will be testing for 12 to 19 volts. When Looking at the connector the connector nipple should be pointing left starting form the bottom left odds numbers right bottom even you will hunt for pin 1 Neg pin 10 Pos. If all voltage readings are within 12 to 19 volts and the console is not powering up , then either replace or have the console repaired.
National Gym Parts can help with process go to http://www.gympart.com/
Posted on Apr 11, 2010
Investigate the battery on this unit. The machine uses a 6volt battery. If there is no power, there cannot be any resistance.
Posted on Oct 06, 2010
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