Liebherr R912 Litronic slow down

Hello to everyone I have problem with Liebherr R912 Litronic, it slow down, no electric curent on pump, once it burned fuse for pump angle regulation, replaced fuse but not working, check all wires and all good, RPM sensor also good, it works sometimes good, and than stop, than again work, and again stop, it make me crazy. On manual mode it sends 450mA only on one pump, and in automatic also it only send voltage and curent to one solenoid but works normal. Anyone have similar problem