Hi peeps,
Not sure if this is ok but i need help fixing my makita twin charger i know there are a few wizards out there when it comes to electronics, one side works ok but the other side is not working i have power from the supply to the circuit board there is a slow blow fuse this has no continuity so i think its blown i did rest a 3amp house fuse on top of the 4amp slow blow fuse and turned the power on and it went pop straight away

 

Check the Mosfet and bridge rectifier for shorts,.

With the power off, on Ohms put your meter across the+/- terminals of the bridge rectifier, it should read around 200 ohms or above, check the Mosfet on diode function, across the D/S (middle and right terminals) and it should read open circuit one way and 650mV the other way.

 

Check the Mosfet and bridge rectifier for shorts,.

With the power off, on Ohms put your meter across the+/- terminals of the bridge rectifier, it should read around 200 ohms or above, check the Mosfet on diode function, across the D/S (middle and right terminals) and it should read open circuit one way and 650mV the other way.

View attachment 301920

Thanks buddy , which pins of the 3 on the bridge rectify are + and - ? I tested the mosfet and got 0.500 v and OL

 

The outer two terminals are+/-, but you can check also on diode test across the centre pins and +/-, it should read open one way and 650mV the other way.