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MG PS10AD power supply problem


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#1 Dallas Racer

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Posted 11 March 2018 - 02:28 PM

I haven't used this PS in years. I dug it out to break in some motors. The motors would frequently jump. I interpreted this as an intermittent loss of power. I ran several without incident, then 2 motors in a row quickly heated up and slowed way down. These were old KTM (Kemtron) motors. One melted the solder on the comm. 
 

Anyway, it dawned on me that the intermittent power loss was more like throwing on the brakes than just coasting from lack of power. So maybe it's intermittent AC? I don't know. I don't know much about electronics but I'd to try to fix it. Here's some pics. Any of you electronic whizzes have any suggestions?

 

MGsupply-1.jpg

 

MGsupply-2.jpg

 

MGsupply-3.jpg

 

MGsupply-4.jpg

 

MGsupply-5.jpg

 

MGsupply-6.jpg


Phil Smith ® ™





#2 Thom

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Posted 11 March 2018 - 07:53 PM

I have that same power supply for my three lane basement track. I have noticed strange things happening when I accidentally turned the switch to that same mid position (turning the power down for my grandkids). It has always worked fine at the 0-7v or 7-14v position,
and then using the other knob for fine adjustment.
Thom Asay

#3 Dallas Racer

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Posted 12 March 2018 - 03:59 PM

I'll give that a try Thom. It used to work fine on all settings though.


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