Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Truma Mover SE/TE caravan manoeverer, 2007

For manoevering in confined spaces, single-handed, via RF R/C hand unit
Assuming no one would happen to have the schematic for one. Would anyone
know what the safety logic/inter-lock around the swivel-out/in motor systems
is. I understand it makes sure the caravan cannot be driven off while these
drive units are positioned against the caravan wheels, somehow connected to
the caravan brake light wiring.
Also what to look for in the way of overcurrent to those motors (or even
the main drive motors) as there sems to be no predetermined positioning of
the swivellers but seem to move out until some sort of good contact with the
tyres is made.




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Default Truma Mover SE/TE caravan manoeverer, 2007

I suspect this safety/brake-light circuit that should return to the caravan
12V battery was returned to car battery at -12V, would that be possible ?.
So 1 amp rating diodes survived but 0.1x .45mm pcb track ruptured , which I
calculate about 3 amp fusing current.



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