Wheelers Paramill Touch Screen won't power on

I have a Wheelers Paramill (Treadmill for wheel chairs) and it is touch screen. The screen will no longer power on. We have tested the power supply into the unit and the switch and it is receiving the correct voltage. The Screen does have a faint burnt electronic smell after opening up the back of the screen. Does anyone know a repair tech we could ship it to to be looked at and possibly fixed. The original manufacture has gone out of business. I