Of course, since we are compatriots and we have the same problems, I will share all my knowledge with you here and I can contact you privately.
although I have a lot of problems so far, today I have solder chips with solder paste up to 138 degrees Celsius and got some positive signals for the first time in a month.
I heated the solder to 350 degrees Celsius on a low speed blower
First he gave me an error on chip number 36 which reported a bad RO which I measure the black pin of the multimeter I prick in the RO behind the chip and the red on the chip itself.
As far as I understand so far, the normal values ​​for RO are minus 1.8..v
So after checking all five signals I concluded that the RO signal is not OK on chip number 35, which I replaced but then I was told the same error on chip number 36 which I also replaced today, after measuring on both chips I later the same values ​​of 1 , 8v but now my problem is chip 34 which gives bad values ​​on CLK, CO, RSD by reducing the voltage by half than normal, after that I did not research more than I left the board to cool down until tomorrow.