My Fluke 117 started showing an 'F11- Err' error when turned on. I think his firmware crashed.
It broke after I tried to measure the voltage of its own battery with it. When you touch the minus of the battery with the "-" probe, the display goes out. After several touches, the device began to show this error. (Does anyone want to repeat it?

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Is it possible to repair? Maybe replace the controller? They are available on Aliexpress. But it should probably already be programmed for this model?