NevC

Update A mate took the driver to his mate who is a repair technician at a large hardware chain. His tests revealed that the switch was ok, and it was the stator unit that was faulty. The windings smelt a bit, but it was unclear if the epoxied electrics or the windings were the cause. He had an old stock stator on hand which was fitted and the unit now works as good as new.

I used a DC18RA charger with new 6amp battery, Red light stayed over the 80% mark I just waited for green light and all was good

I got a Makita DTD154Z with 6amp battery to replace my BTD144 which has died. I am very happy with tool, has good torque and as yet have not needed to recharge battery, but have not really done a hard day with it yet.

Thanks for the replies. I believe it to be the trigger assembly even more so now after viewing the YouTube link below. I will order a new units and see how I go. https://youtu.be/A1NnHpIl9os I should have said that I am in Australia and parts are not so available here.

I have a BTD144 about 10 years old. It has started not working when trigger is activated, it just makes a clunks and does not rotate. Try trigger again maybe 1 to 3 times and its works like it should. Being brushless I am not familiar with trouble shooting. Makita agent is shut for 2 weeks so cant get it seen to. I am curious what you may think the problem is and can it be fixed. To keep working I bought a DTD154z and 6amp battery which is very good to use.