Hello everyone,
This crazy board came with a shorted LDO's and very low resistances on PL8100 & PL8101...
found a dead PWM pu8100 "RT8239B", dead pu8300 "RT8202MZ" & PQ8300, and also dead IT8517E-HXS & W25Q64FV
all chips was replaced with exact models, all resistances became normal, when connecting LBP both LDO's went up, there is 3.3v on EC and flash and power button but there is no led lights or reaction to the button at all, consumption on the LBP is 0A
tried flashing the bios, tried replacing RT8239B with uP1589Q, tried replacing all PQ8100, PQ8101, PQ8102, PQ8103, PQ9101 & PQ9102... behavior not changed..
suddenly noticed that without soldering the flash almost all powers rises before pressing the button "except memory voltage" !
LDO's all up and PL8100=3.3v, PL8101=5v, CPU power PL8200=0.9v, memory voltage PL8301=0v.... LBP consumption became 60mA
noticed the lacking of 3VSUS_ON & 5VSUS_ON signals to enable ENTRIP if the flash was soldered "indicates a wrong dump"..
without the flash there is ENTRIP signals and pu8100, pu8200 is working normally..
tried multiple flash chips with multiple dumps, tried replacing IT8517E-HXS with IT8518E-HXS... but the behavior is the same
where to dig ?