How about a shorted armature? Kevin Wilks Kevin's TV & Video Repair Penticton BC Canada kevintv@xxxxxxx -----Original Message----- From: techassist-bounce@xxxxxxxxxxxxx [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Al Gutz Sent: Sunday, February 01, 2004 7:25 PM To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: OT Any treadmill experts out there? John Most of those use a DC motor. Check the voltage to the motor with a load if you cant walk and measure at the same time get a helper. If motor voltage is dropping possible bad rectifier or caps. The only thing likely bad in motor could be brushes. Speed is controlled using a SCR vary volts to the motor. On the types with AC motor the speep is usuall controlled with a tirac. Al G Al's TV-Electronics Pembroke Ont. Canada John Myers wrote: > > Hi, > > I'm trying to fight off dunlaps disease (my stomach's about to dun lap > over my belt. Someone gave me a Proform treadmill a few year ago. A > connector in the positive line to the motor which turns the belt had > burned open. > > An easy fix, I thought. The treadmill now works, but it appears to > have reduced torque. The tread moves OK, but the minute I step on it, > it slows to a stop. > > OK, guys, I know what you're thinking. I'm only up to 233 pounds. :-) > > It seems to work OK, if I crank the speed up high, and then step on. > For now, I'm going to check the caps in the power supply, hoping > that'll fix it. > > I'm not a treadmill tech. I'm hoping for some advice. > > Thanks, > > John Myers > Myers TV Service > Alliance, OH 44601 > 330-821-6545 > > ------------------------------------------------------------------------ ----- > Jokes, complaints, off topics, general chat. Everything other than repair > help problems can be found at this new list. No archives and posts will not > be found on Google or any other engine!To remove or join, click: > mailto:ecartis@xxxxxxxxxxxxxxx?subject=subscribe%20chat > Send to the list at chat@xxxxxxxxxxxxxxx once subscribed. > ------------------------------------------------------------------------ ----- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ ------------------------------------------------------------------------ ----- Jokes, complaints, off topics, general chat. Everything other than repair help problems can be found at this new list. No archives and posts will not be found on Google or any other engine!To remove or join, click: mailto:ecartis@xxxxxxxxxxxxxxx?subject=subscribe%20chat Send to the list at chat@xxxxxxxxxxxxxxx once subscribed. ------------------------------------------------------------------------ ----- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/ ----------------------------------------------------------------------------- Jokes, complaints, off topics, general chat. Everything other than repair help problems can be found at this new list. No archives and posts will not be found on Google or any other engine!To remove or join, click: mailto:ecartis@xxxxxxxxxxxxxxx?subject=subscribe%20chat Send to the list at chat@xxxxxxxxxxxxxxx once subscribed. ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/