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Old 01-20-2021, 01:30 PM   #41
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Join Date: Dec 2010
City & State: Alberta
My Country: Canada
Posts: 1,938
Default Re: KSGER STM32 T12 soldering stations

Check the handle and its wiring. The shake switch can be installed upside down or wired wrong and it picks up noise.

Here is the schematic for your KSGER 24V power supply at post #3.

I doubt anything is wrong with it (PSU), aside from grounding. The 24VDC(-) should connect to earth ground for safety and noise.
The newer OLED-V3.0, OLED-V3.1 controller boards have an extra GND pad where you can solder a wire to, and then connect to a GND on the metal enclosure and IEC connector.
That also might fix the shake switch problem, if it is due to noise.

Last edited by redwire; 01-20-2021 at 01:33 PM..
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