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Post by Toronado3800 on Oct 2, 2018 11:23:10 GMT -6
My problem is my blower motor surges randomly.
I have two control modules for my HO scale trains. One puts out 0-17v DC and 20va, the newer one 0-15vDC at 18va so shouldn't my blower motor spin at full speed when hooked up to it?
What I get at max power with the older one is very low speed operation and my multi meter reads 3 volt output. The newer one surges like it is shorting and the fan surges as well. Output still reads a steady 3volts at the controller while plugged in and 0-15 volts unplugged.
I powered both through a 120w cheapier power converter hooked to my car. I don't think with the surging hooking up to house A/C is necessary.
Trying to use exposed metal in my Aurora's door jam or under the dash was actually worse. I got no reaction
I did insulate my terminal ends that I plugged into the blower to keep them from shorting.
The blower comes on full plugged into the car as normal.
What am I missing?
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Post by Toronado3800 on Oct 5, 2018 21:09:56 GMT -6
Welp, it died completely, no voltage running to the blower so it seems to be something in the control system. I'll probably junkyard a module and take apart a dash for and a dial or whatever time permitting when I'm there.
In the mean time I ran some power to it from the battery and the blower worked. I've rigged a system from the bolt on top of that first control module under the back seat to an inline 20 amp fuse to a toggle switch then the blower and the ground back under the door jamb to the battery ground.
So I have the blower available on a kill setting.
If I could find an inline rheostat I'd be in danger of never making it to the junkyard lol.
Curious, can I unplug the control module w/o making anything else malfunction? If so I'll take it down to my workbench and see what makes it tick, or not tick or diagnose what part of it failed.
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