Hey guys!

My dfp is acting up. During self test it doesn't complete the 2.5 turn/900 deg. It turns right correctly, centres, but only does 1 instead of 1 1/4 turn to the left. It does this 3 times, no 200 deg test, then stops and both LEDS start blinking and it doesn't want to do anything. I've searched and tried everything I found, checked power, driver re-install, different usb port, tried manually switching between 900 and 200... no luck!
It's barely 6 months old. Can it be fixed or should I go and swop it out?

Any advice would be appreciated!

Thanks in advance!

If you remove power from the wheel while in 900° mode, can you rotate the wheel for a full 900°? Or is it also stuck at 810° this way?

Maybe something came loose inside and is blocking full rotation?

You could open the DFP's case and take a peek for yourself what happens. You can open the DFP very easily without doing any visible damage if you use good screwdrivers. You only have to remove the small sunken screws at the bottom (I believe 8 - don't have the DFP here at hand). No need to take the wheel off like with the G25.

Things to check inside:

- At the back of the motor you'll see an optical rotation sensor. Make sure there's no dust or dirt on the transmitter or receiver, or in the tiny slots in the larger black cogwheel.

- When you move the wheel you see the plastic toothed rack on the bottom move left or right. The 900° lock is done by a cam on the steering axle which gets stuck on either end on the toothed rack. When you move the wheel by hand lock to lock, do you see anything that can be obstructing the movement of the toothed rack?
The 200° rotation lock is done by the white plastic piece that can slide into the toothed rack. Does that still look ok? Can you move it by hand in and out (only possible with the wheel in the 200° range)? Is the spring still present? Are the 2 microswitches on the PCB still operated by the 200° lock?

- On the steering axle there's a large cogwheel, mostly covered by the gearbox case but at the top it's open. When you move the weel from left to right you see a small shiny metal strip mounted on the side of this cogwheel. It is used by the center detection sensor. Is it free from dust/dirt and when you move the wheel is there no dirt that could possibly fool the sensor?


Power up the wheel with the case open and connect it to the computer. There are no harmful voltages inside, so no worries. Do you see anything that doesn't seem right? If I recall correctly the calibration sequence of the DFP is as follows:

- If in 200° mode, move 200° lock out of the toothed rack to enable 900° mode.
- Turn all the way to the left.
- Turn all the way to the right (+900°).
- Return to the center position (-450°).
- Move the 200° lock in the toothed rack.
- Turn all the way to the left (-100°).
- Turn all the way to the right (+200°).
- Return to the center position (-100°).
- If the software is set to 900° mode, move the 200° out of the toothed rack to enable 900° mode.

The left LED should now light up continuously. If it blinks, something failed. The right LED lits up only in 900° mode.

Thanks for the great reply.

Was afraid to open the wheel without knowing what to check for.
Will try and sort it out over the weekend!

Thanks again!

P.s when power is removed I can rotate the whole 900° by hand but when self testing it does 450° right but only 360° left.