Guys, can high number of hw errors physically break chips / hashboard?
No, unless the chips get too hot and burn or get a sudden voltage spike and get fried. Just make sure they are cool and the power supply doesn't suddenly drop/spike.
+1
Sorry for being a bit late at the party, but it can be that one of the chips on your hashing board is just a bad chip. In case you can get the board running with the HW errors I would say just ignore those few HW errors.
Increasing / decreasing the voltage might help you out.