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Hello. Im working on a 820-00164 board it will not power on.
I have green light in magsafe.
When measuring PP5V_S4RS3 it is unstabel and gose from 0V - 3V - 0V - 3V
Same with PVCC_S0_CPU its go from 0 too around 1,5V then drop again
working on a old 820-2533 with no pictures, no backlight and no chime.
I don't know history off board but found some a little area with water damage (around u6990 replace u6990 and the capacitor straight with and cleaned area)
Still no pictures no chime no backlight.
When I remove the ram it...
Hello. I'm sitting with a 820-3536 board with keyboard issue. 9 O L . and @ dosent respond.
I have replace new keyboard connector and tried know good working keyboard with same result.
Question dos anybody know witch pin on j4813 or U4801 that create signal for those.
I have a liquid damaged 820-3462 board here, it's liquid damage around smc I have cleaned up all nasty resistor and capacitors.
The board is not always powering it's like depending on witch day it is..
Could it be bad smc?
Have a 820-00875 board with out pictures on screen. any idea where to start? i have backlight. smc reset dosent fixit.
no sign for water damage. i dont know any history except that the customer mean that screen working on extern screen.
have a 820-3437 Logic board with short on ppvrtc_g3h. I removed u1900 still short. Try to inject voltage (3V) but it only draw0.190A so around 0.58W. Any tips to next step?
Ppvrtc only give 1,3ohm.
it is liquid damage. Good cleaned before I got it..