fisher plow control shorting out/buring up board

azyfd

Junior Member
Location
medford
i have a 2000 ford super duty with a fisher mm1 plow.
the other night in the middle of a storm my joy stick control stopped working so figureing the control died i put my spare one on raised the plow and that one stopped working.took them both apart both green boards in side had the wires fried from the on off switch to the raise switch. once this happens all other functions stop working but red light stays on. i looked over my harness a few times cant find anything wrong. the next day i took wire to jump the conntection in the board to test it before burning another control worked fine all directions a few times each then burned up some more. any ideas as to what this could be? the plug to the solinoids seemed a little went maybe thats shorting it?
 

Flipper

PlowSite.com Addict
Location
CT
I went through 3 v-plow control boards on my 99 F-350 diesel. Boards used to blow right when starting truck. We tested all plow and truck wiring and voltages, checked the batteries and alternator. Still was blowing boards. We would actually start truck then plug in control to keep boards from blowing. On a whim, I tried a new alternator (again old one tested fine) and have not had the problem since. Alternator was cheaper then the 3 control boards.

Something to try.
 
OP
A

azyfd

Junior Member
Location
medford
haven't found any bad wires yet going to try a new plug from plow to truck for the solenoids looks a little shi**y. and going to try the alternator thanks for the ideas
 
OP
A

azyfd

Junior Member
Location
medford
tore the truck apart today. found some chaffed wires going to the control box and the plug from truck to plow wasn't so good looking. fixed the wires and replaced the plug along with looked over the rest of the harness all seems good picked up a control and so far its been good now i jut need his snow storm to pick up so i can make back so money
 

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