Ryobi p251 hammer drill doesn’t run when trigger pulled and led flashes 4times

SOURCE: dewalt 18 volt cordless hammer drill

when it suddenly stop running probably the motor is seized.possible broken magnet. motor comes in assy

SOURCE: Chuck tines on Ryobi Hammer Drill Are Not Engaging Uniformly

home depot replacement chuck i beleive you can also us a keyless chuck. they usually come with instructions. most have a screw at the inside of drill chuck.

tom

SOURCE: I HAVE A 1992 RYOBI HAMMER DRILL MODEL ED-382P WHO

As per the Ryobi web Site, there is unfortunatly no repair centers in Dallas. Go to if you go to the Ryobi website look under "support". They list a bunch of centers for Texas.

SOURCE: Kawasaki 19.2 cordless drill

Re: Burned trigger switch: call the number on the drill (800.590.3723) and tell them what happened. They will offer to send you a new switch or have you send the drill in for replacement of the switch--although the person I talked with said they would probably just replace the whole drill.

SOURCE: my dewalt cordless drill stopped working in the middle of drilling a hole. is the trigger faulty/broken?

First before you open the tool ground yourself. The switch is probably static sensitive. Now open the tool and check for wires that may have come loose from the switch, or motor brush area. If no bad wires make sure the switch terminals are ok (not broken or bent and are tight enough to make contact with the batery terminals). Next check the brushes and make sure they move freely in the brush holders. You didn't state the model so it may not have brushes you can access. If all that is good disconnect the motor from the switch and secure the motor in a vise. Take wires with alligator clips and connect the battery directly to the motor for just a second to see if it runs. If the motor runs you have a bad switch assuming your battery is charged.