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SMC_RESET_L 3.3v

3V3_SUS 0.382v in diode mode Q7802 Pin 1 0v 2 0v 3 3.3v 4 0v 5 0v 6 3.3v Q7820 not sure about pin positions, boardview dont show correct 1 0v 2 0v 3 3.3v 4 3.3v 5 6 7 Using PSU to power board

Measurements earlier was with board alone, PPBUS_G3H 12.3v SMC_ADAPTER_EN 3.3v PM_BATLOW_L 0v S5_PWRGD 3.3v PM_DSW_PWRGD 3.3v PCH_DSWVRMEN 3.22v PM_SLP_SUS_L 3.3v 3V3_SUS 0v

Im working on a 820-3332 and cant really understand whats going on. With keyboard attached its starts up, but no green light and fans going full speed. Cant find ssd but boots into efi and pass. Without keyboard I get green light but no fan spin Measurements without keyboard PPBUS_G3H...

never power applied when measure resistance =) and no corrosion at r5185 and shorted even with r5185 removed as said

I need a clean bios file for 820-3476 Mid 2014 and Late 1013. Anyone who have files to share?

SMC_ADAPTER_EN 0v and seems to be shorted to ground 3.2 ohm. Removed R5185 still shorted. Replaced SMC but measured SMC_ADAPTER_EN without SMC in place and still short. Anything else then PCH that can short this line ?

Im working on a liquid damage. Corrosion around U1950. Replaced components in the area. Some measurements so far. PPBUS_G3H 12.59v PPBUS_S5_HS_COMPUTING 12.6 PPBUS_S5_HS_OTHER5V 12.58 PPBUS_S5_HS_OTHER3V3 12.6 PP5V_S5 5.01 PP5V_S4 0v PP3V3_S5 3.3v PP3V3_S4 0v PM_SLP_S5_L 0v...

After searching the board I found R2193 missing. Put it back and have fan spin. Really hate this messed up boards. Have to test everything else now, seems to be some bad soldering around U7400 and lcd connector area and no chime.

dont have any history on this one. got it in seems to be washed already and just started with this board. R7402/R7403 150K and 12.6V on pin2

no vcore at all. pp5v_s3 going up and down. shows short to ground after tryin to start but after a some minutes the short is gone

Im back with another 820-3115 board. First time I tryin to fix quarter fan spin repeat so not sure where to start. No sign of water damage. PPBUS_G3H 12.6v PP5V_S5 4.95V PP3V3_S5 3.3V PPVCORE_S0_CPU 0V

ok then its just continue with my other boards in the pile of shit boards =)

Just have my multimeter to test with and All_SYS_PWRGD pulsing at start PPVCORE_S0_CPU pulsing at start

WIth R5923/22 remowed I have some new values scl 0.710V sda 0.646V

scl 0.519v sda 0.445v already tested without iSight cable attached without any result

After changing chip again and still 4v I started to measure all resistors around U7200. Find R7270 was a bit off value, changed and now I have a steady 3.3V =) Happy this is a board im working on when I have no other to do. Good training on soldering chips =) Still no start. Have quarter spin...

Im back with a 821-3115 board. No sign of water damage. Fans spinning at full speed. Test in ASD EFI shows error in: Sensor - Temperature (Ts0P) Palm rest Test in ASD OS shows error in: Thermal Interface - Processor Error 255 heatsink Temperature (Ts0P) Palm rest Error 13005 SMC can not read...

tryed change U7200 and Q7220 at the same time and still 4.02V =) Cant understand why. voltages U7200 pin1 0 2 0 3 1.189 4 4.0 5 2.04 6 0.777 7 4,0 8 4.0 9 8,28 10 4 11 4 12 0.04 13 3.378 14 1.989 15 0 16 12.6 17 4.95 18 0.062 19 0 20 0 21 0 22. 4.49 23 0 24 0 everything seems messed up

shouldnt it be L7220? and I have 4.027V on both sides