PLs we have a problem in RB912 , At the beginning of operation the health is abnormal !!
32.4 V
59 C - 65 C
we check more than one also same problem
Pls advice
Verify power supply voltage, unit is rated up to 30V and what you see is somewhat out of spec. Such supply voltage (if not killing your device) might explain high temperature as it keeps voltage regulators at their limit.
Hm yeah where is it getting 34v 
I use 24V when using PoE over more than a few metres, 12V normally’
or what is it really getting? Is it really getting 32V or is that the abnormal reading?
I’ve no idea what your RB912 is really getting. Some decent multimeter should tell.
Also inspect the power source, whatever it is … is it some PoE switch, is it PoE injector with some “weird” power adapter?
32 volts… :o :o) :o)
Unless you are sitting in a tent somewhere and have a truck batteri plus a car battery hooked up to it…