I have this ongoing saga with a Smooth 5.25 treadmill that I've been trying to fix.
The motor control board is bad and replacement costs $300.
So in another thread I read about using a
4000W AC 110V 120V SCR Voltage Adjustable Regulator Motor Speed Control (available for less that $10 on ebay)
plus a bridge rectifier to drive the treadmill motor bypassing the original control board.
I got the parts, wired it up, and - Yippeee - it started up just fine. However, as soon as I put resistance on the running belt (it was not running true, so I was trying to force the belt away from an edge, so I could then adjust the tension on the back roll) is stopped after about 2 minutes. Any attempt at starting it again ends with popping circuit breaker.
I checked the voltages: the regulator no longer regulates the voltage, it is 110V AC in and 110 V AC out, regardless of the potentiometer setting.
It is rated at 4000 W resistive load, the treadmill motor is a 2.5 HP DC continuous duty (Could that just be too much against 4000 W?.
I see the TRIAC on the controller is stamped BTA416008, which should be 40A, but the third line includes: 7A - could that be the problem? By the way, the controller itself is NOT stamped/labelled anywhere, so the 4000W is just a posted rating on ebay, nothing "official".
What could be the problem here?
The motor control board is bad and replacement costs $300.
So in another thread I read about using a
4000W AC 110V 120V SCR Voltage Adjustable Regulator Motor Speed Control (available for less that $10 on ebay)
plus a bridge rectifier to drive the treadmill motor bypassing the original control board.
I got the parts, wired it up, and - Yippeee - it started up just fine. However, as soon as I put resistance on the running belt (it was not running true, so I was trying to force the belt away from an edge, so I could then adjust the tension on the back roll) is stopped after about 2 minutes. Any attempt at starting it again ends with popping circuit breaker.
I checked the voltages: the regulator no longer regulates the voltage, it is 110V AC in and 110 V AC out, regardless of the potentiometer setting.
It is rated at 4000 W resistive load, the treadmill motor is a 2.5 HP DC continuous duty (Could that just be too much against 4000 W?.
I see the TRIAC on the controller is stamped BTA416008, which should be 40A, but the third line includes: 7A - could that be the problem? By the way, the controller itself is NOT stamped/labelled anywhere, so the 4000W is just a posted rating on ebay, nothing "official".
What could be the problem here?