My Apex 4100I treadmill tries to start, and I can see barely the belt turning with a sound coming out from the motor, but it stops (very seldom it actually turns and works). Is this by any chance a capacitor problem on the main board? Is it replaceable?

1) Faulty sensor speed try to adjust it face to face magneto motor
2)Sensor speed try to tight the connector very well.
3) Replace if neceesary.4) Main motor faulty or burn. Test 115vac for input measure without load fore easy running.
5) Test the main motor controller board for 115vac input and output for +5VCD,
6) Adjust the deck bel for 2-3" for lift max.
7)Lubricate the deck bel.
8) Test the transformer for input and secondary voltage.
See the block diagram for illustration how the main motor controller has 90% aprox of function of any treadmills.

sincerely. Merry Christmas.

ernesto cuadra
managua, nicaragua. c.a.

Watch this videos tips:
http://www.youtube.com/watch?v=qgb2TY3WCkg&feature=related
http://www.youtube.com/watch?v=-oeXTKqWECw&feature=related
http://www.youtube.com/watch?v=GPI6dFJCUA4
http://www.youtube.com/watch?v=bF3OyQ3HwfU&feature=related
http://www.fixya.com/support/r10724803-measure_voltage_in_transforme_fitness
http://www.fixya.com/support/r10786838-test_procedure_dc_motor

Please see carefylly this videos +Tip for instructions. Normally the voltage is main terminal for motor will be 110-115Vac, but carefully in other case will be 220Vac-230Vac, I recomend that you measure the Outlet( receptacle from the wall) if there are 115 or 230Vac Single Phase.

sincerely.

E.CUADRA

hi,
To adjust the treadmill belt just watch the following video. It will help you for the same.


ok

You can try and do a re-calibration on the treadmill (Its listed in the Users Manual) but it sounds like the console has gone bad. To repair this you would have to replace the entire console.

hold down stop and speed + then put safety key on
hit stop once
push incline+
let it go up and down
take key off and reattach
try
if it still doesn't go the incline motor is bad

# get a 12-18 volt dc battery fully charged(like one from a cordless drill)
# Make sure it is fully charged, because it won't work if not
# attach the + and - to the motor red is + and black is -
# If the motor turns slightly your motor is ok, if not the motor is bad and would need replaced
# if the motor is ok then your motor controller(the board with the metal) is malfunctioning and would need replaced.

If the console lights up but the buttons don't work, then unfortunately it's probably the console and they're not repairable that I know of. You may want to check the wiring harness and the connections at the console and at the controller under the motor hood. Pull them apart and check for bent pins. If they look good, the console is most likely bad.

You need to have the power supply board rebuilt with larger Caps and resistors. Look on the internet under treadmill repairs. The board is easy to replace yourself so don't have someone come in and overcharge you. I think about 4 screws and two plugs.

try caibrating it.

Go to Nordiactrac.com and enter your Model number from the sticker on the frame. It should read NTL or NTTL then 4 or 5 number. Folow the instructions and ask for the Part's List. You should be able to find it there.