Hi,
I have a pcb for a treadmill (reebok RT-1000), the treadmill motor vibrates rather than spinning...
It's a DC motor, 2.25HP, 9.5A, the motor i am certain works fine, in fact it was spinning fine until recently, the treadmill came to me with a possible controller fault, but seemed to be fine, using it, then leaving it sat a while till we used it again just seemed to make it worse (didn't like being ignored lol)
I've re-soldered all the connections with fresh solder, and intermittent and dodgy readouts on the display have now been cured, but the motor still wont spin up (it spun up to a stable speed then continued till the power was disconnected ignoring all controls prior to resoldering the connections)
so i now think the two capacitors maybe dead & the 5 transistors (D8020L thyristors & S8020L SCR's (TO-220))
anyone repaired one of these? any ideas?
The capacitors are not bulging, however there is what looks like glue or leakage around the bases (green/brown shiny but set like epoxy type substance)
the S8020L's just give me an NPN reading of 1 when i test them in a cheapo dmm... (E & B connected, no middle leg)
the caps are Rubycon 250vdc 470uF(m) (anyone know what the (m) signifies? 35mm x 25mm, the heatsink / metal casing states "Icon health & fitness, 1500 SO. 1000W. Logan, UTAH, Motor speed controller MC-66. Made in China"
there should be two S8020L transistors opposite the bank of 3 D8020L's, they're missing from the photo because i desoldered them to test them...
thanks
josh1e
I have a pcb for a treadmill (reebok RT-1000), the treadmill motor vibrates rather than spinning...
It's a DC motor, 2.25HP, 9.5A, the motor i am certain works fine, in fact it was spinning fine until recently, the treadmill came to me with a possible controller fault, but seemed to be fine, using it, then leaving it sat a while till we used it again just seemed to make it worse (didn't like being ignored lol)
I've re-soldered all the connections with fresh solder, and intermittent and dodgy readouts on the display have now been cured, but the motor still wont spin up (it spun up to a stable speed then continued till the power was disconnected ignoring all controls prior to resoldering the connections)
so i now think the two capacitors maybe dead & the 5 transistors (D8020L thyristors & S8020L SCR's (TO-220))
anyone repaired one of these? any ideas?
The capacitors are not bulging, however there is what looks like glue or leakage around the bases (green/brown shiny but set like epoxy type substance)
the S8020L's just give me an NPN reading of 1 when i test them in a cheapo dmm... (E & B connected, no middle leg)
the caps are Rubycon 250vdc 470uF(m) (anyone know what the (m) signifies? 35mm x 25mm, the heatsink / metal casing states "Icon health & fitness, 1500 SO. 1000W. Logan, UTAH, Motor speed controller MC-66. Made in China"
there should be two S8020L transistors opposite the bank of 3 D8020L's, they're missing from the photo because i desoldered them to test them...
thanks
josh1e
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