PS, that chart has errors. I have never seen a permanently damaged board from a battery fault.
3 clanks is scrambled memory issue, but also means a software conflict. That is the problem MTH made the "Make PS" kit/chip for. Works on the board when original chip is used.
Occasionally, you can also get this when a chip has been swapped between boards but is not correct for top board software. The symptom here is a startup sequence followed 3 clanks. G