Macbook A2289 won't turn on

[PITERPENY]

820-01987
A cyclic reboot occurs on one of the ports. on the second hangs 5 V and 0.257-0.300 A
who faced such a problem? What to check ?

U3100

PP3V3_UPC_XA_LDO=3.299v
PP1V5_UPC_XA_LDO_CORE=1.58v
PPDCIN_G3H=5v


U3200

PP3V3_UPC_XB_LDO=3.290v
PP1V5_UPC_XB_LDO_CORE=1.58v
PP3V3_G3H_RTC=3.3v
PPDCIN_G3H=5v