Proform 400GI Treadmill making a very loud noise, which is worse when using speeds between 2.7 and 3.1, noise is so loud can't hear tv when turned up to full volume. It makes the noise without anyone walking on the treadmill.Is there anything I can check, is it the motor? Thanks V

Good information, you said enough, a lightening storm does the greatest harm to electronics ever. You probably need the manufacturer to help you. https://www.proform.com

A filtering capacitor may be failing.

adjust the REED switch see the diagram attached m clean it+test for open or faulty with DVOM, tight the connector very well,However try to RUN the software calibration and fix it. see the diagram attache too for speed sensor, adjust it and test it , clean it, and tight very well the connector.God bless you

see the video and do it inmediately+ roller bearing Too. God bless you

You must LUBE the deck belt first, this happen because you do not lube maintenance schedule, Do it every week from use.Maybe you have a WORN deck belt.

2) LUBE the rollers bearing front and end, use WD-40

3) Test the drive belt motor, for cracking or worn, and replace.

God bless you

tight a little the drive belt, and test and replace the belt if necessary.
2) test the bearing motor and repair.
3) LUBE the deck belt and rollers bearing and replace if necessary maybe you have a WORN deck belt with noise!
God bless you

Dear Sir:
If it sounds like metal rotating on metal then it could be roller bearings or motor bearings. Most of the time the bearings will have to be pressed out and the new ones pressed in. May be you must go the treadmill to workshop. sincerely. God bless you.

ernesto cuadra
managua, nicaragua. c.a

http://www.youtube.com/watch?v=zXeHMWTcLUY&feature=related
Watch this video.
1) observe if the main motor is running, be carefull with you hands.

2) See the drive belt motor is o.k or is broken and replace+ or flywheel is loosen or broken too.

3) Test if the motor is turning with good speed adjust speed. Test the speed sensor.
http://www.youtube.com/watch?v=23ZgWaVEQjA
http://www.youtube.com/watch?v=-oeXTKqWECw&feature=related

If the colse buttons make a chirping noise when you push them the console should be Ok. If there is no chirping noise with the push it is a bad console. If everything but the speed works it will probably be your motor controller that is bad.

1. When walking on the treadmill the belt abruptly stops.
2. As the speed increases so does the noise. Is this associated with the belt tension? Tightening the belt causes the belt not to move at all. What might be the solution to 1 & 2?