Question about Makita 2 Bl1830 18v Battery,dc18ra Charger Lxt Fr Drill
CHECK POWER CHORD OK FUSE OK WHATS THE PROBLEM WHY WONT IT LIGHT AND CHARGE
THIS MAY OR MAY NOT HELP. THERE MAY BE SOME COMMON CIRCUITRY WITH THESE CHARGERS?
Makita 1850 battery charger FIX. A friend asked me to check his charger unit which had failed after it had been connected to a portable petrol generator that incorrectly generated 317 Volts AC and not the usual 240 Volt AC. On the charger circuit board next to the transformer wire connection is a component marked F2; this is a 2.5Amp fuse covered with heat-shrink sleeving. This fuse had ruptured/blown. Also blown was Transistor Q1, a ''P'' Mosfet labelled IRF9Z24N and Schottky Diode D9 labelled SR560. Replacing these 3 items got the charger working again. NB Resistor R31 is only 0.1ohm - don't assume it's gone short circuit! NB. I'd presume that most other Makita chargers will have this heat-shrink sleeving ''camoflaged'' fuse on the input of the circuit board and it would definitely be worth checking if the charger has stopped working. Regards Roy
Posted on May 16, 2010
Sorry to give you my opinion, but these chargers are very delicate, I have 4 and can barely keep 2 going.
Open it up and look for obvious shorts/loose wires, if no luck then buy another one and return the busted one as if it were the new one.
You will end up with two working chargers.
PS this is probably fraud...ha!
Posted on Aug 18, 2009
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Posted on Jan 02, 2017
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