@Bitmaxz, this is not possible with the new gen miners, the heatsink on the chip front is one whole large block attached with solder/thermal and screws, no way it would do anything like that.
If its different from the old s19 units then he can just point the blower or hotair on the front of the heatsink near on that chip just to give a bit heat because some parts is not fully soldered there some parts have cold solder joint. So giving them a heat can melt it and gives more contact from chips to the board.