We have the AF-351 plugged and ready to turn on but it doesn't turn on how do we turn it on.

Sorry we do not sell parts or do we have the means to locate them for you.

probably you have problem with the focus motor, i ever have same problem and need to replaced the focus motor.

Sounds like you need a new blower wheel. You would need to remove the drum and front panel.I think it is a reverse thread on blower wheel.

has it always done this if not wut has changed?

The firing order on the 351 that came in the 1995 Bronco is: 1-3-7-2-6-5-4-8
The spark plug gap should be on the emissions sticker under your hood, usually on the radiator support. It may also be on the underside of the hood.
If you cannot find the sticker, try a .044 gap, if that doesn't work go a little higher to a .052.

Simple test: the thermostat in your unit is electromechanical - unplug the unit from the mains, take it out and measure the resistance between the 2 electrical contacts, if it doesn't goes to near 0 when you turn it even a little bit then it's defective and it will have to be replaced.
If the resistance does indeed goes to near 0 then the defect is in the AC system. Another simple test: open the casing of the unit and put your hand directly on the compressor; now turn the thermostat button. If it doesn't vibrate then the starting capacitor of the compressor has failed and it will have to be replaced with a similar one.If it vibrates then the cooling circuit has got a leak and all the fluid has been lost. For that you will have to call a pro that will solder the leak shut and refill the circuit with the appropriate fluid - only he will have it, it's not sold on the customer market.

Toner level might be very low.replace toner cartraige.

Sounds like there is a problem with the power supply. Try unplugging the T.V. and hold the power button for 30 seconds. Plug the T.V. back in and see if that helps. If it doesn't try switching to another outlet, and if that doesn't work then you may need to replace the power supply which would probably cost anywhere from 140 to 200 for one.

lens need to clean throughly from inside and tight all AF unit and diapharm unit screws and try...

The only solution that I found is to take off the battery from camera. After I reconnect the battery, the camera starts without any problem (lens are moving, LCD is on, AF is also on). The battery status is full.