Can you take a close up picture of it please?
Milwaukee M18 Rapid Charger Repair
- Thread starter JoeCK
- Start date
pirate-king studio on YouTube goes through the repair, start to finish, replacing the TOP261EN seen at 4:27.
The Rapid Charger draws much more current than a TOP256EN is capable of. The TOP256EN is rated
230VAC: 60 W Adapter (i.e. sealed in plastic case), 119 W Open Frame (i.e. as per the Milwaukee charger, which has heat sinks and vents)
85-265VAC: 40 W Adapter, 86 W Open Frame
The Rapid Charger can use at least 162W (M12 12V 4.5A = 54W, and M18 18V 6A = 108W, but to charge, the voltages is higher than 12V and 18V respectively; I've measured over 20V on the M18 side). So the TOP256EN is under-spec.
The TOP261EN is a better match:
TOP261EN/YN
230VAC: 177 W Adapter, 333 W Open Frame
85-265VAC: 118 W Adapter, 254 W Open Frame
Plus, Pirate King says it works.
The Rapid Charger draws much more current than a TOP256EN is capable of. The TOP256EN is rated
230VAC: 60 W Adapter (i.e. sealed in plastic case), 119 W Open Frame (i.e. as per the Milwaukee charger, which has heat sinks and vents)
85-265VAC: 40 W Adapter, 86 W Open Frame
The Rapid Charger can use at least 162W (M12 12V 4.5A = 54W, and M18 18V 6A = 108W, but to charge, the voltages is higher than 12V and 18V respectively; I've measured over 20V on the M18 side). So the TOP256EN is under-spec.
The TOP261EN is a better match:
TOP261EN/YN
230VAC: 177 W Adapter, 333 W Open Frame
85-265VAC: 118 W Adapter, 254 W Open Frame
Plus, Pirate King says it works.
Hi Joe,
Did you manage to fix the charger? Sorry for jumping that thread.
I have the same issue as you had in my Milwaukee Rapid Charger (no power, no lights) and I get the same values while I test the bridge rectifier (different value in and off the circuit board). I checked online and Its seems that the bridge rectifier should work like that, but on the board it's not multiplying its value to 1V as off the board. I wonder if it should work like that..
I also replaced the Top256e IC chip and the charger still dead.
I'm not sure what should be my next step..
Thanks ahead!
Did you manage to fix the charger? Sorry for jumping that thread.
I have the same issue as you had in my Milwaukee Rapid Charger (no power, no lights) and I get the same values while I test the bridge rectifier (different value in and off the circuit board). I checked online and Its seems that the bridge rectifier should work like that, but on the board it's not multiplying its value to 1V as off the board. I wonder if it should work like that..
I also replaced the Top256e IC chip and the charger still dead.
I'm not sure what should be my next step..
Thanks ahead!
