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I think this would be a new trade-in machine because of the brushless motor and the marketing technical change of the brand Milwaukee repair is in most cases if it has to do by this brushless tools not interesting anymore to repair or let it repair by milwaukee service only if there is garantee ,but for the end user only there are great new trade-in options and the garantee time should also be transparant and great.
Milwaukee will have repairs in ther own garantee and is not interesting in the between trade when its coming for repairs by others that likes it will ending by competition in service by garantee
as between the big brands mutually.
I believe you are asking about sparks in the motor. The sparks are from the carbon brushes. If there is quite of bit of sparks, or arcing, the brushes need to be replaced.
A faint burnt plastic smell is actually normal for these when brand new, but that normally disappears after a week or so. As for sparks, a thin trail of blue sparks trailing along the commutator (the uppermost part of the motor that can be seen rotating) is normal. However, if there are blue, orange sparks flying out of it its toast. The motor is dying in that machine.
I have never used that brand of impact, but I have used many others and I have never known an electric impact or drill to need oil. You need oil in an air powered impact because the air motor needs lubrication. The electric motors in electric impacts have sealed bearings and brushes that are meant to run dry. The actual impact assembly should be sealed as well, it should not need any oil.
The battery itself has a deep discharge protection .
Or the electronic or the battery its a new
phenomenon where you can have bought electronica and a triggerswitch and you have measured the electric field on 0.3 ohm on both 2x3 coils and the battery measured on maybe 15 Volt and it do not give nothing yes the lamps burned , but there was not an charger in my case delivered so i am also waiting for this problem by a Makita Jigsaw because a colleague has allready a electronic circuit and switch ordered and tried with that battery and an other battery but no life at all, so a new battery should may be working. or a broken or new damaged electronic part was delivered. that brushless tools are a young technical thing, many brands have.
the teething problems out, by the switches and the power mosnfets(panasonic) Makita is new for me this comparable problem a have also have yesterday.
next week i know more about a possible solution. Makita BTD144 Lithium Ion Impact Driver Brushless Motor Parts
Do not worry.This is quite normal. It is the metal driver hitting the head of the nail.There are no electrical components in a pneumatic nail gun so this is pure metal-on-metal strike sparks. You may find it is more visible on certain nails than on others. But do not worry. It is normal. You may find the sparks reduce after time as the driver wears a little or takes on a certain shape.
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