Proform 765CD Treadmill Motor Control Board

The motor controller did not work 100% as expected. After connecting the new motor controller, I attempted to calibrate the incline of the treadmill. The incline motor direction was opposite of what it should have been. Up was down and down was up. I was able to correct this by reversing the wires that connected to the incline motor. When running my Proform 765CD Interactive treadmill through the tests, the actual speed was not displaying anything. It would show the speed as I selected it on the control panel, but after a few seconds, it would return to zeros. I contacted TreadmillDoctor and they informed me that this was normal for this board. The board transmits the speed data faster than the older Proform display can read. There was no way to correct this (other than to obtain an original replacement board instead of the upgraded replacement board). They informed me that the upgraded board is build to be more durable than the original boards, so I decided to live without the "real-time" speed indicator since everything else seemed to work just fine. They also informed me that the resolution I stumbled across for the incline motor was the correct fix for the motor direction being reversed. They actually have that listed on their website for troubleshooting/installation for this board (that I did not read ahead of time....whoops). The upgraded replacement board also does not need to use the old transformer (since this is now built into the board itself). There were a couple of other issues that I had with the replacement board (that I was able to overcome). The first being that there was a loud buzz on the speakers of my treadmill when the treadmill was running. I was able to resolve this by running a ground wire from chassis ground to one of the board mounting screws. There must have been a floating ground that this took care of. The buzz went away. The other issue was trying to calibrate the speed (since I no longer had a working real-time speed sensor). I was able to overcome this by placing a piece of tape at one spot on the treadmill belt, measured the length of the treadmill, and timed how long it took to make several revolutions. I then did the math to determine the speed (I used a formula I found on the Internet for calculating this). I kept doing this while making small adjustments to the motor speed until the calculated speed matched the speed I set the treadmill to. I used 5MPH as my target speed (since it was a midpoint for the range of my treadmill). I have been using the treadmill with the replacement/upgraded board installed for about 1 month now. Other than not having a constant real-time speed indicator, I have no other complaints. Hopefully it will last longer than the original board did. I would recommend this board if you don't mind losing the real-time speed indicator. It does display the speed you select (for a few seconds) prior to returning to all zeros.