Number 4 (JKL) button triggers repeatedly

Hi,

I appreciate that your post is from a couple if years ago but thought I'd drop a note as it may help others.

I am just about to replace my #5 tact button as it is not triggering at all. The carbon contact on the button wears out and the fix is to desolder old, solder new 2 or 4 pin tact button (sits under the plastic key pad button).

In your case it may be a bad solder joint that is connecting intermittently or the carbon contact may have fused togethet in the tact switch.

Either way replacing tact switch should work. It doesn't sound like a wider circuit board problem.

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