Home exercise bike issue: tension control not working.

W

WhatInThe

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Attempting to repair an old home exercise bike. The tension control isn't working. Took it apart it seems that the small motor that pulls the cable to increase or decrease tension isn't working. The magnet is stuck in one position. Loosened the tension cable to no avail. The digital display lights up and it pedals at one speed so in theory the motor should be getting commands from the control panel. Wires and wiring harnesses look good. I did notice for about 2 minutes after done pedaling the tension motor still seems to be running or buzzing.

Is it a digital programming or control panel issue or a tension motor issue? A square motor smaller than a baseball costs $100, trying to avoid that and it's after market and might not work-looks completely different
 

It's about a 20 year old Keys 560. Youngest part stamped 2002. Checked online it's seems to be a common set up and is also used on elliptical trainers for multiple manufacturers. Can't find the exact match using numbers on motor. Person said they last used it about 15 years ago. They said they don't want to put money into a 2 decade old item unless really cheap. The lockdowns depleted a lot of fitness equipment inventory all over. I'd like to try and fix it first. My guess with over a decade of no use all the components were completely drained of power, things like capacitors which affects the controls and motors. Would the components re-energize after regular use?
 

My guess is that if the motor is still running after you finish peddling then it would probably be the control panel and not the general power motor
 
Keesha said:
My guess is that if the motor is still running after you finish peddling then it would probably be the control panel and not the general power motor
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Could be because even after turning off the panel completely you can still here the noise after for several seconds.
 
Keesha said:
Not if they are rusted and seized up. You’d be best off getting another used one than paying to get it fixed. Just my opinion.
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I checked for rust on all the wiring,connection points and motors/components themselves and they're rust free on the outside anyway. I'd buy a new one at this point since even the expensive after market motors that come up on the internet don't look the same and might not even work. The problem is the closing of gyms caused a rush on fitness equipment, even online or mail order.

Working on the bike is a pain too because the parts I'd have to put a meter too are at the very bottom of the bike so unless I get it up on a table or bench I'll wind up on my belly trying to take readings.
 

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