have a problem with a 7FB15 (actually a 7FBL15-import) electric counter balance. Unit will not lift, sideshift or tilt with throttle actuated and direction selected. Also the units hour meter always reverts back to 0 as does the clock (after battery unplugged). Have replaced the memory battery under the lower control board in the dash which seems to have fixed the memory problem but the 'no lift while driving' problem is still there. I suspect the lower dash control board requires replacement but would like to hear other possibilties if anyone has one.