Panasonic ey7546 14.4v stopped working when i pull trigger

have it investigated by an appliance repair shop
the system is this
plug in --no noise
pull trigger -- blade spins and makes running noise
release trigger and blade stops -- no noise
anything else indicates a serious problem with the unit especially if it is smoking.

The pcb control can maybe defect ,when there are 2 flashing leds on the frontside of the battery holder.
If the tool was made before 2008 there where splitting brushes they where made to soft, after this years there was a modification WEY7440L2307 a hard brushes assembly the tool may have for 10 years warranty if there where hidden defects if youre machine was made before 2008 , the dealer must know about that problem. PANASONIC have mostly hidden defects and modifications on brushes or the brushless engines by other models.

This doesn't address the intermittent power cut offs...power cuts off intermittently and you have to keep recycling the power 'trigger' to get it to work...total PIA

The I.R. 2135Ti or TiMAX has some known issues with the trigger o-ring (item# 22A) swelling, the throttle valve (item# 28D) bending or breaking, and the throttle valve seal (item# 28E) wearing out or deteriorating. Procedure wise you should not be able to remove the trigger without first removing the inlet bushing assembly (item# 26) the reason is that the reverse valve (item# 24) keeps the throttle valve from tipping forward and releasing the trigger, there is a slot for the stem of the throttle valve to slide into.
Follow this link to the parts list:
http://manualarchive.ingersollrandproducts.com/ir_pdfs/Tools/Vehicle%20Service%20Tools/Air%20Impact%20Tools/45534070_ed3.pdf
When reassembling the tool first install the inlet bushing assembly and then install the trigger, make sure to lube the o-ring before inserting.

You might just need new brushes or the ones in it are sticky.

Look on the front pannel. thier should be a "latching Switch" indicated by "4 X 2" little arrowes. The 4 is " pull the triger -- the release the arc continues, the "2" is pull the trigger and the arc startes release the trigger the arc stops simplesssssssss
Ken

Check the wire feed does not become obstructed when the trigger is pulsed. The wire can become tangled on the roll if it is able to get loose. The reel tension must be adjusted as the weight of the roll decreases.

could just be the switch. while you have it apart I would check the condition of the motor brushes. The switch is around 40.00. Let me know if you need more help

The forward/ reverse switch is hanging up and the rotation of the drill is switching it, then it changes direction. The switch needs a little TLC and a good cleaning. Blow it out.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

This sounds like a faulty solenoid that may be intermittantly working. I would take it to a repair shop for evalualtion

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_b96ba3f038cf317c