Author Topic: JDM-011 controller wont turn on after battery cables shorted  (Read 2604 times)

Offline sidgallup

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JDM-011 controller wont turn on after battery cables shorted
« on: November 07, 2025, 04:24:17 PM »
I was just replacing the potentiometers on this controller, replaced the 1rst one and put it back bare bones to test and it worked fine, then after i was done replacing the 2nd one, plugged my "testing" battery in, it didn't turn on when plugged the USB cable or pressing the PS button, then i realized one of the cables on the battery was lose from the soldering pad and im sure it touched the other pad causing a short, after that i grabbed the board and it was incredible hot at this particular spot i circled in red, specifically that 4 legged component was SO HOT it actually hurt my finger, i put a drop of alcohol on top of it and i even heard a "HISSSSSS" due to how hot that thing was, so i disconnected the battery and removed that component, tested the area around for any signs of other component shorted or hot and everything seems normal.

With that component out of the PCB i plugged the battery in and tested for voltages and on those 4 legs i get these values:

Leg 1 : ground
Leg 2 : 3.9 v
Leg 3 : .53 v
Leg 4 : 3.9v

However, when i test for voltages on another controller, that same 4 leg component reads 3.9v on Leg 3 in my picture, i dont know if this is supposed to be correct and that component has to be on the PCB to have 3.9v output in Leg 3, would like to know this before salvaging that 4 leg component from another board.




Offline sidgallup

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Re: JDM-011 controller wont turn on after battery cables shorted
« Reply #1 on: November 09, 2025, 08:31:48 AM »
Did some repair job but still controller is compeltely dead not turning on with either fully charged battery or connecting USB cable, ALL THESE VOLTAGE VALUES ARE WITH THE BATTERY PLUGGED IN, I CANT GET ANY POWER WITH THE USB CORD, ill try to get a brand new cable since im not sure this USB cable wotks 100%, it feels a bit wobbly, anyways...

All 3 fuses near the battery connector were dead, i jumpwired them all and now i have voltage going through that part of the circuit, tested some values and what i get is in the pictures, wondering if that squared IC on top of the board after the fuses is just dead, i dont get any readings on the caps located at the very top of that IC, only a low oscilating value from .90 to 1.2v on the right side cap shown in the pic.





on the front side of the board i swapped the A32  component and now im getting these values, on the other side of the board where the main ARM IC is located i get some 3.7v and some 1.3v readings but im not sure if these are correct, i havent been able to find exactly what values should i get on that side, any help appreciated.



 

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