A2289 820-01987 Liquid damage around U8400 - Cleaned turned on for a second and now 20V 0.02A T2 heats up only

[it-solve]

Cleaned corroded traces and retracted. Replaced R8431. Turned on for a second saw loading logo. Switched off to test further, stuck at 20V 0.02A. T2 warms up, but pretty much stays only on it.

Tried DFU restore fails repetetivly. Can't detect any shorts.

 

[2informaticos]

It doesn't try to start anymore now?

 

[it-solve]

Nothing on the screen. Just t2 heats up.
I can push in DFU mode, but fails with error

No liquid or corrosion around cd32s

 

[2informaticos]

Something else affected by corrosion.

What error do you get on DFU?
Tried restore, or only revive?

 

[it-solve]

Need revive as its a data recovery case.
Haven't seen this error before. Some places says bad cable, changed the USBc socket, cable has been serving me well with other restores.
logi.wiki says its = 75 - T2 booted in recovery mode (Revive wont work). - https://logi.wiki/index.php/DFU_Mode_Restore_(Macs)
Not sure that means t2 moved from DFU to Recovery due to time out or DFu capabilities are broken? But happens after awhile and as seen from the photo, the DFU sign behind the loading bar changes to an Apple Controller

 

[2informaticos]

Force the machine off first; press power button 5s.
Then try to put in DFU again.
External jumper method may help you.

 

[it-solve]

This is board on its own only with power and usbc to another mac scenario. Each time I pull power out it switches off as no battery.
Using FORCE_DFU pads I can reach DFU mode, just failing with that error.

 

[2informaticos]

Try with battery connected too.
Some boards can't complete DFU without battery connected.