You do not lose the entire blade every time. Depends on how the chip was lost or what chip were lost, it could be a total loss, but not because you lost one chip doesn't make it automatically lose the whole hashing PCB. Yes it can be but based on your Miner Status Page, you did not lose the whole hash PCB.
From my 3 x S5+ working normaly only one, as it should be mine.
Last miner was with broken fan. and it turned out that there was a not working blade.
I took the fan from another S5+ and A broken fan-sided last blade is broken.
At first it was only 1 missing ASIC , like the the second miner.
So I already know that a single ASIC loss may be the loss of the entire blade.
Therefore, I paid 7500 USD and got
one just [non]broken miner, that can immediately break one blade
one just broken with transport ,
and one 100% working miner.
All they had mined for at least a month, if not more, before selling