Electronic variable speed drill switch

[Ken1]

Hi, I have a Sears Craftsman 90 series model #315.220900 1/2" electronic variable speed reversing drill that needs a new switch. Unfortunately the Sears parts website does nor have any reference to this model. I cannot find any replacements for this on ebay or elsewhere. Is there another substitute available? The FA5-4/1BEK switches on ebay have the exact physical dimensions as mine but I can't figure out if the connections will work. My switch is made by Teccor and has T3 stamped on the side of it. I have attached a photo of my drill.

 

[MaxHeadRoom78]

Teccor makes SCR/Triacs etc, most likely a simple Triac circuit internally, if defective, it may be worth opening and check to see if simple Semi replacement could be possible.
Max.

 

[Tony Stewart]

The triac appears just below the left brush, so it will have a pot on brown wire and contact to bypass at max power..check.

 

[Ken1]

I should have mentioned that the drill works but the forward/reverse section of the switch is broken and is stuck in the reverse position.

 

[MaxHeadRoom78]

Just reverse the field leads and it will work in forward. Albeit, still stuck.
Max.

 

[tcmtech]

The trigger switch you have looks like the old version of the type that they use today in a lot of variable speed tools.

If I was you I would just look for a similar newer style trigger switch and refit it into your old drill.

BTW Makita uses a very similar trigger switch design in a number of their corded power tools and would likely be the best refit to use.

 

[darenstu]

Hi Very similar switch on certain black & decker drills with the reverse action being controlled by a lever rather than the newer push button switch regards Stuart