How to repair fix a Hikoki, Hitachi, Metabo HPT NR1890DC nail gun that won't fire.

Another Hikoki gun NR1890DC nail gun is in for repair. Another new problem was diagnosed and repaired.

This is a new one for me, havnet seen this fault before, so anyone having a problem like this, here is the solution.

This problem was the magnet on top of the contact probe. I only dismantled the gun yo find the fault. But if you have this problem, there is no need to dismantle. You can easily replace or repair the magnet with dismantling the gun.

If your gun is not firing like this.
Turns on, will go into service mode, is not showing any fault light, but will do nothing else. Then the problem will be one of only a few things.
This magnet on top of the probe.
The trigger switch.
Or the pickup sencor itself on the top.

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