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MPMU_VREF_ADC is 0v PP1V2_S2 and PP3v3_S2 are floating... i've removed lc710 (and removing it i've broken it...) but still floating 0v on all u7700 ldo about lc710..it is 1.5UH-20%-3.9A-0.048OHM should i care about all specs? or for example only about uh? i cant find the exact type in my...

I don’t know WHAT NC Means… Is it normale that PP1V2_S2 is floating? However i will check other ldo and mpmu thanks

PP1V2_S2 is not 0 but 1,2 floating

what do you mean with "4"...there are a lot of ldo on sym 3 of 6 PP3V8_AON_MPMU_ISNS_VIN 3,8v PP1V2_S2 0v floating 1,2 PP3V3_S2_UPC floating 3v/2,5/1,6/0 PP1V8_AON_MPMU 1,7 PP1V5_VLDOINT_MPMU 1,5

hi to all, please help. motherboard is perfect, no signs of corrosion or anything else. both usb ports stays at 5v@0,04/0,05amps PP3V3_UPC0/1_LDO & PP1V5_UPC0/1_LDO presents PPBUS_AON 12.28v PP3v8_AON 3.8v PP3v3_S2 "bootloop" 2,8/3,0/3,1 PP1V8_S2 0V PP5v_S2 0v PP1v25_S2 0V any hints? thanks

how is it possible???'

u7700 changed: no luck

i recheck all voltage and i confirm them U7700: 17, 18, 5, 4, 24, 12. 12v, 5v, 5v, 5v, 0,3v, 3,9v i havent voltage on l7710....

i've found the problem of the short, i've removed it resoldering u7700 again.but still no voltage on l7750

i confirm i have 0v on both sides of l7710

i don't understand how is it possible....the line is full shorted except pin 1 of u7700

i have 2,4ohm resistence on r7726 (pm_pgood_5v_s3_reg) , 0,002 in diode mode

i've done a mistake: i have 3,8v on pin 12

U7700: 17, 18, 5, 4, 24, 12. 12v, 5v, 5v, 5v, 0,3v, 0v i have 0v on pin 1,2,14 of u6900 0,3 on pin 3

no voltage at all, line not shorted... compared with another board

already done with other motherboard of other thread....same values

hi! i don't know the history of this computer...it is completely dead, no status led at all..i already tried another good power supply without luck:.....any hint? thanks

In ohm mode scale, i have 0,8kohm with one probe on ground and one on l7750

i can't see anything strange