Same problem here for A1708 Macbook pro. History: Macbook did not turn on at all and a repair shop diagnosed, that i needed the logic board to be replaced. I found it way too expansive. One year later I changed the logic board by myself. The spare part is a used but okish logic board. Now, the mac works and i could safe my data and make a factory reset. However if i close lid, the mac book turns off screen but does not go to sleep. If i turn it off and turn it on without closing lid, all is good. When i turn off and close lid I cannot turn on again. I always need to power on with smc reset.
Some guys said its a problem with battery cable, but i checked it and it does not make any sense. Maybe something with the display cable? Or lid sensor? But where is this sensor?