Does the too much too little thermal compound rule apply to other electronics?

Does the too much too little thermal compound rule apply to other electronics?



I have damaged my LED torch earlier by leaving the copper wire exposed on both the negative and positive lead that connects between the PCB board and the board containing the LED, but now I'm just wondering if adding too much thermal compound between the board containing the LED and metal plate behind it will cause overheating. 

I now learned a lot from electronics where I was actually supposed to desolder the board containing the LED from the - + wires that connect to the PCB board and this LED before pulling it out, then reversing this step by pulling the 2 wires towards me a bit before aligning the LED board on the tabs and soldering the wires on the LED board.





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