Nice find!
I especially enjoyed (translated) “The acid infiltrates everywhere and every time you use the soldering iron, an olezzo of burnt cat piss will come out.”
However, do note that the page mentions the same problem after replacing those parts;
“I am therefore replacing the following components under test:
CP4 = 47uF 25V
CP5 = 10uF 50V
CP21 = 6.8 nF (capacity value that varies greatly with heat)
These three components were joined by hot glue and you have to unweld them together.
IP1 = TDA4605
QP1 = CY17G-3
Once these last replacements have been made, the machine starts but with low voltages at the beginning, and then gradually arrives at stable voltages and the machine is fully functional.”
So the successful step seems to be this afterwards:
“
QP2 = IRFBC40
CP40 = 22KpF
Specifically, the CP40 was out of tolerance but still very changeable in capacity (it was enough to hold it in your hand to see the capacity vary greatly).
Once these last two components were replaced, the machine started at the first shot in the two days of random ignition attempts.”