so I build a small pool automation, with 4 relays and 3 temperature sensors. I connected the sensors via a pcb board using the 3v3 from the raspberry and a 4k7 resistor as pullup. Everything works exactly as intended until one (and it normally does not matter which one of the three it is) goes above 60°C. As soon as that happens, all three sensors disappear after a few (1-2) correct readings (meaning that the files from /sys/bus/w1/devices are all gone except for w1_master) until I disconnect everything from the power (so full shutdown from the raspberry, then disconnect the whole system from the power, reconnect and startup, only shutting down the raspberry does not help). Any help would be highly appreciated, I do not really get what's going on, as those sensors are rated from -40° to 125°C. I read that a few other people had had similar problems, but those posts were very old and none found the underlying cause of failure.
Thanks in advance !