Scrapyard for G27, parts for sale ?

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nurburgring

nurburgring

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France
Dijon, France
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URBANCOCKPIT-1
In order to repair my G27, I would like to replace the parts one by one until the wheel works again normally. I think that the main circuit board is dead. Or maybe the one for the sensor, near the motor. The encoder wheel is in perfect shape.

Ready to pay for shipment of the parts until I found the solution. In that case, i pay for the part and ship back the other ones.

What do you think ?
 
nurburgring
In order to repair my G27, I would like to replace the parts one by one until the wheel works again normally. I think that the main circuit board is dead. Or maybe the one for the sensor, near the motor. The encoder wheel is in perfect shape.

Ready to pay for shipment of the parts until I found the solution. In that case, i pay for the part and ship back the other ones.

What do you think ?
Click to expand...

Also note that some of the parts can be repaired. For instance people have opened and cleaned the motors, or washed them in solvent with success. And on the circuit board, resoldered on new output mosfets. The mosfets are dirt cheap but are a challenge to solder on as they are very small. So you'd best have at least some experience with similar efforts.

If your motor gets conductive buildup in the commutator, this increases the load on the mosfets hence both can be a concern. A motor that is faulty can in turn lead to blown mosfets. So in that case simply loading in a new board can lead to a short up time before it blows again.
 
Here is a motor cleaning example. It's from one of my Fanatec CSR wheels, however Logitech motors are similar. In fact CSRs and Logis use the same motor drive mosfets. All I did was run the motor submerged in water/alcohol for a few minutes driven by a 12 volt battery. This is primarily brush/commutator debris. Submerging a motor like this is not bad for it, in fact RC racers used to do this all the time to break-in a motor. Nowadays they've mostly gone to brushless motors.

MotorClean_zps0a31e10f.png


Here is a clearer view of the Logitech Mosfets which drive the two motors, the 8 leggers in the picture:

LogiMosfets_zps1302209c.png


And FWIW a Fana CSR board showing the same exact mosfets to drive it's one motor:

Fanamosfets_zpsb1e32e71.png
 
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all very interesting posts.

Motors can work even if the Mosfets are dead ?

neema_t
What are the actual symptoms?
Click to expand...

when calibrating, turn to the full right then turns to the left but only one and half turn, do it again after 5 seconds exactly the same movement and after nthat, no steering, no feedback
 
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nurburgring
all very interesting posts.

Motors can work even if the Mosfets are dead ?

when calibrating, turn to the full right then turns to the left but only one and half turn, do it again after 5 seconds exactly the same movement and after nthat, no steering, no feedback
Click to expand...

No, if the MOSFETs are blown then the motor wouldn't move at all. Have you tried it on a PC/more than one PC/a PS3?
 
neema_t
No, if the MOSFETs are blown then the motor wouldn't move at all. Have you tried it on a PC/more than one PC/a PS3?
Click to expand...

This wheel was used only with PS3. Do you think i have to plug it on a PC to see what's going on ?
 
nurburgring
This wheel was used only with PS3. Do you think i have to plug it on a PC to see what's going on ?
Click to expand...

No, but plugging it into a different system might shed some more light on the problem, and running Logitech Profiler might let you see if the wheel is being picked up correctly.
 

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