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JD 4230 cab electrical problems
| Ron Ketcham |
Where to start! My 4230 (Sound-Guard cab) 2-speed heater blower works fine (both blowers) in the low speed but when I move the switch to high speed, the left motors turns at high speed but the right motor cuts out comletely. I replaced the switch and no change. Also, the radio cuts out when I turn on the blower switch. When the radio is on and the motor is running, I get a whining noise thru the speaker that drowns out all but the nearest AM stations. There is no whine when the tractor isn't running but the whine increases with the RPMs. AC was working fine but now the compressor won't run and the dealer says the compressor is probably toast???? The two spotlights on the top rear of the cab wouldn't work, but when I cleaned the ground and the positive contacts, they worked for a while but then quit. Seems that when I jiggle the light switch they sometimes come on. All of these things kind of happened about the same time. I am guessing that I have at least one ground problem. Where do I start the problem solving?
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