Multimeter mishap caused dmres35v to die, next step?
My aunt upgraded her old machine and was throwing it away so i asked if I coumd have it. She said that the remote no longer worked with the unit and I determined that she was correct, the ir sensor wasnt responding in the unit.
Usually I research how to properly do a job but this time I didnt. I want to learn from my mistake and more importantly learn how to further diagnose the device to find out what was damaged by my actions.
I broke out my old multimeter and had no idea what I was doing, I set it to tbe settings pictured here (pic of the sensor + pcb) imgur.com/a/q6chb
With the device fully powered on I then probed the pins on the sensor. I probed 3 different combinations of the pins, the first probes gave readings but the two pins I probed last caused the unit to power down and no longer powered back up again.
I completely disassembled the unit to check all of the components and have not spotted any blown caps, heat marks etc. I also checked the fuse and it is good.
I now know that what I did was foolish and served no real purpose, I have learned how to properly use the multimeter now as well as safety precautions.
How can I go about trying to find what damage I caused? I assume since the ir sensor was isolated on its own pcb (which is plugged into what I believe is the power board) that I may be able to narrow down where the damage was caused?
Or am I wrong about this and it is likely not possible to fix/find the damage that was caused?
I am hoping that I may be able to learn valuable things from this which will help me track down problems in broken devices I encounter in the future.
Thank you for your time, may post more pics if deemed helpful.