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0,9 ohm...

ok! i have full short on c7620 pad ! it is pp3v3_s5_ssd!! if i inject voltage on this pad, i can clearly see the line near the ic that pulse....but i still have short even removing the ic!

Removed q8470 still short Removed u8490 still short

I’ve discovered something looking better with Thermal camera https://www.dropbox.com/scl/fi/gsqngzyaojcebicnaxz83/Video-10-04-24-11-29-19.mov?rlkey=377a5e4bb5pkzuigiqlunvfy9&dl=0 This is not the ic but the line that pulses ! I have full short on both side of this cap...

So in This picture https://www.dropbox.com/scl/fi/w6fx28t9pg3nrwdbzhjv8/Foto-10-04-24-11-11-16.jpg?rlkey=cx6z79jxa7ooaqzzvrvl62i1f&dl=0 On the left I have the ic (and it should be u8470), on the right, I have the mosfet (it should be q8470) On This picture...

00134 seems most similar https://www.dropbox.com/scl/fi/750byon2el454fx62fhy7/Foto-10-04-24-09-45-41.jpg?rlkey=uqjjc97fqjafzpoupplk0v4kd&dl=0 In the white circle There is not the component that I have in my motherboard. I’m assuming it is q8490 or u8490…how to understand? But now? What...

how can i change them if i don't know anything abouth them?

Like I said before, I have only small light on led 2 and nothing else This is what I have found under Thermal camera https://www.dropbox.com/scl/fi/dzstjk8it3srqa6q174qe/Video-09-04-24-23-04-50.mov?rlkey=u95d7dvk8n1628hj0pmg1y9fv&dl=0...

Hi to All! I have an iMac 27 2019, motherboard 820-01236 Dead. When i Connect power supply, I can barely see a light from the second led Nothing happens if i try to to boot the system I’ve Tried to Connect my power bench supply directly to the motherboard and I have this behaviour...

Could you help me please?

i'm pretty sure that usb ports were changed....so i would like to check in diode mode each pin of both usb soldered on the mothgerboard...but i have not other motherboard to compare

any hints?

yes i mean Thunderbolt controller !

I’m 100% sure that they have changed usb ports….because i have found t2 shield resoldered…..so I Think there must be an hardware problem….but i have not diode mode readings for usb port

i've tried to connect an usb mouse...it doesn't work at all

i've flashed this https://drive.google.com/file/d/1LG3gKv3fU1177Qq-quX0FJbkpxxnFEwD/view now i can't here the boing sound at the start up.,,, still no ssd, and no usb till wifi frozen

edit

I have not medusa! I have downloaded your rar, and There are 2 bin inside I have used the one with the name 820-00840 8hv22 medusa clean ME + pram.bin

I’m not able to flash 820-00840 8hv22 medusa clean ME + pram.bin I have this error https://www.dropbox.com/scl/fi/yk6h8icxv4exdjvwnewog/Foto-21-03-24-21-29-59.jpg?rlkey=o3l7nxbucr0qrln1l3mpeqk1l&dl=0 No problem flashing my dump

Is it better to clean MY bios?