Hi everyone. I have very limited experience with electronics. I have a slight understanding of some things, but get easily lost when things start to get tricky.
Anyway, I was given a treadmill. It's a pro-form 400c. The control panel to adjust the incline, speed, and program selects works fine. The incline on it works fine too. However, the motor for the platform does nothing. I'm in Ireland where the standard voltage is 240 ac.
So I opened the cover and found the control pcb had a track burned out on it. I uploaded a couple of pics here nd you should be able to see what I mean from a couple of them. The best schematic I found is here .I tested the motor on a car battery and it spun up fine. I even opened it up and cleaned the brushes and armature in case there was a problem with dirt. It's a 130 vdc with the two brushes 180 degrees to each other
I changed one of the IGBTs. The one on the left of the two together, as I thought it may have blown. I repaired the track, and plugged it in. My soldering is not the super best, but it does work There was a pretty big flash, and the fuse switch in the house tripped. The little diode close to the burned out track had blown. Now, I'm just guessing that that little component was a diode. I'm sure someone here can tell me exactly what it is.
I tried a dc multimeter onto the wires to the motor, with the motor unplugged. Then I turn on the machine and I got about 120 v dc , but it dropped down to about 10 in the space of 60 seconds.
On the underside of the board, there is no components or any sign of overheating. But whatever is wrong, it's something I need your help with.
Anyway, I was given a treadmill. It's a pro-form 400c. The control panel to adjust the incline, speed, and program selects works fine. The incline on it works fine too. However, the motor for the platform does nothing. I'm in Ireland where the standard voltage is 240 ac.
So I opened the cover and found the control pcb had a track burned out on it. I uploaded a couple of pics here nd you should be able to see what I mean from a couple of them. The best schematic I found is here .I tested the motor on a car battery and it spun up fine. I even opened it up and cleaned the brushes and armature in case there was a problem with dirt. It's a 130 vdc with the two brushes 180 degrees to each other
I changed one of the IGBTs. The one on the left of the two together, as I thought it may have blown. I repaired the track, and plugged it in. My soldering is not the super best, but it does work There was a pretty big flash, and the fuse switch in the house tripped. The little diode close to the burned out track had blown. Now, I'm just guessing that that little component was a diode. I'm sure someone here can tell me exactly what it is.
I tried a dc multimeter onto the wires to the motor, with the motor unplugged. Then I turn on the machine and I got about 120 v dc , but it dropped down to about 10 in the space of 60 seconds.
On the underside of the board, there is no components or any sign of overheating. But whatever is wrong, it's something I need your help with.