Question about Makita 2 Bl1830 18v Battery,dc18ra Charger Lxt Fr Drill
Internal board fuse checked? This may/may not help?
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
If it's under warranty let them deal with it. But,more than likly, you have a problem with the circuit board ( you did check your power source ) and that's not a handyman fix unless you happen to have the tools to trace the system and find the problem. You can try to get a PDF break down on that charger by going to Makita's web site and entering the model # but unless your a tech. it might look like gibberish . Check ebay for a good used one.
Posted on Oct 24, 2009
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