Hello,
I have an electric stapler that has stopped working. It's a Challenge Xtreme brand (UK cheapie)
When I pull the trigger it is completely dead. I've traced the 230V which is present on the board so it is not a fuse/wiring issue.
I know these are often simple devices (basically a solenoid), but this one has some sort of anti-latching circuit, and I'd like to keep it standard instead of modifying/bypassing it completely.
I think there is a component that switches the solenoid on/off as part of the anti-latching circuit, and may have failed. When desoldered and connected to a transistor tester, it is reporting it as an NPN transistor, but reading a Vbe/hFE of zero

My issue is that there is no model number or identifier whatsoever on the component, so I can't just buy a replacement to see if it fixes it.
The tool is rated at 720 watts on the label, and the voltage across the solenoid will be 230V.
Does this really look like an NPN transistor? Is it likely that it is switching 700+ watts? Maybe silly questions, but I'm a novice.
Thanks for any help!
I have an electric stapler that has stopped working. It's a Challenge Xtreme brand (UK cheapie)
When I pull the trigger it is completely dead. I've traced the 230V which is present on the board so it is not a fuse/wiring issue.
I know these are often simple devices (basically a solenoid), but this one has some sort of anti-latching circuit, and I'd like to keep it standard instead of modifying/bypassing it completely.
I think there is a component that switches the solenoid on/off as part of the anti-latching circuit, and may have failed. When desoldered and connected to a transistor tester, it is reporting it as an NPN transistor, but reading a Vbe/hFE of zero
My issue is that there is no model number or identifier whatsoever on the component, so I can't just buy a replacement to see if it fixes it.
The tool is rated at 720 watts on the label, and the voltage across the solenoid will be 230V.
Does this really look like an NPN transistor? Is it likely that it is switching 700+ watts? Maybe silly questions, but I'm a novice.
Thanks for any help!
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