Recent content by samstown

Hello, sorry for the delay, I was sick. I can get into DFU but revive give "AMRestoreErrorDomain error -1 - Failed to handle message...

I know what you mean, sorry, indeed it can not be right. so PPBUS_G3H at F6700 = 12.27V PP3V3_G3H_RTC_X at C3100 = 3.37

Thanks. PPBUS_G3H not shorted but 0V. PPBUS_G3H = .419 & 0V 3V3_G3H_RTC = .400 & 3.376V F8400 is ok F7000 F7001 ok PPDCIN_G3H_CHRG = .529 & 5.14V

Hello, No sign of life. I see big coil diode mode value is low... Could it be anohter chip than CPU shorted ? PPVBAT_G3H_CONN - Diode .817 PP5V_G3S - Diode .377 PVCCSA_S0_CPU Diode .012 PP3V3_S5 Diode .330 Big Coil L7410 .003 L7420 .003 L7211 .001 L7221 .001 L7231 .001 L7330 .001 LA340 .001...

I've repalce U7700, short is gone but it doesn't start, stuck on 5 V.With USB-C tool I see 5V, 021V then 0,06 amp then shutdown and start again with my thermal camera I see UF000 getting a little warm.

Are those value ok, .008 diode mode

ok, caps were ok, short still there. I'll try to swap U7700

DFU not possible. Actually, I have a short on CAP_PPSPMU_VLDO9, Diode mode = 0.001. As far as I see, there's only two capacitor connetec to this line. Should I try to remove both ?

Board behavior changed while I was measuring. As soon I measure C7835 CAP_PPSPMU_VLDO9 it stops turning on and off. Board stay on betwen 0.13 and 0.30 amp. I didn' made a mistake( I was always on Volt, no diode mode), not sure why. With thermal camera I see U7700 Pulsing. It's not clear if it's...

I've compare various points (15) around UF000/100, they have similar value. I am not sure about LDOs, I see PP1V4_LDO_PREREG at 1.39 V on L84E0/2 I see several connection for PP1V5_VLDOINT_MPMU under U8100 but i don't have a test point to measure. I've search around U8100 but i can't see other...

PPBUS_AON diode mode on F5200/2 = .515 and 12V and drop to 0 when restart PP3V8_AON_VDD_MAIN diode mode on CW10E = .191 and 3.8V stable

replaced UF000, UF100, UF400, UF500, UF115, UF40 and UF750 and all caps and resistor. When plug USC-C power supply, I get 5V 0,2 amp for 5 seconds then it drop to 0,06 for 2 seconds amp then it stop and restart and does that over and over.

Replaced L7800 and U7700 but the issue wasn't there. Problem was on the other side, it was a fautly capacitor on line that connect to U7700.

Hi, Macbook air suden death. It was stuck at 5v -0,4 amp. I found L7800 completely burned. I removed it, now it's 5V -0,004 amp. Now I have diode mode .464 PIN1 and .224 PIN2 where L7800 was. Can I replace it and try to power or should I check something else ? Thanks Claude

I have a pretty good IR camera. I see U6960 pulsing as well