hello friends, i am just working on that board, no watermarks to see but could be cleaned, that man bought it in ebay.
i figured out
PP3V42_G3H is there
SMC_BC_ACOK 0V
resistance c7020 c7050 is like expected
acin pin3 is 0V
replaced u7000
got now green light no fanspin
PPBUS_G3H is 12.22V, so i think a not working smc
replaced the smc i got now PPBUS_G3H 12.55V should be ok, still no fan spin
no PP3V3_S5
measured short to gnd
pulled l7260 out
short to gnd on pin 2
injecting now 3.3V on pin 2
voltage breaks down to 2.4V and coming 3.2A more ampere on that labor power unit not possible
nothing is warm on the board
need some help how to diagnostic now best way
i figured out
PP3V42_G3H is there
SMC_BC_ACOK 0V
resistance c7020 c7050 is like expected
acin pin3 is 0V
replaced u7000
got now green light no fanspin
PPBUS_G3H is 12.22V, so i think a not working smc
replaced the smc i got now PPBUS_G3H 12.55V should be ok, still no fan spin
no PP3V3_S5
measured short to gnd
pulled l7260 out
short to gnd on pin 2
injecting now 3.3V on pin 2
voltage breaks down to 2.4V and coming 3.2A more ampere on that labor power unit not possible
nothing is warm on the board
need some help how to diagnostic now best way