hi guys im having a bit of trouble with a doosan b1.5t5. when i looked at the machine at first there was no code or information on the display after checking a few items i found the main controller had failed.I replaced the unit now i have steering and hydraulics but no drive. when you select drive the line contactor closes and the display shows that the machine is getting a fwd/rev signal but it just cuts out opens the line contactor and fault code F5 shows.
if there is anyone who can give me some information re this problem or even better a service manual would be a great help.
my mail is in my profile thanks guys