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The board looks ok, no fan, power supply gives 20-30mA with pulses at 120mA every 3-4 seconds as if it wanted to start but cannot PP3V42_G3H=3.44V PPBUS_G3H=8.6V PP5V_S5=5V PP3V3_S5=3.3V PP3V3_SUS=3.3V PP5V_S4=bursts every 3-4 seconds no readable PP3V3_S4=bursts every 3-4 seconds at 3.3V...

The board looks ok, no fan, power supply gives 20-30mA PP3V42_G3H=3.44V PPBUS_G3H=8.6V PP5V_S5=5V PP3V3_S5=3.3V PP5V_S4=0V PP3V3_S4=0V SMC_S4_WAKESRC_EN=0V PP1V2_S5_SMC_VDDC=1.2V SMC_BC_ACOK=3.4V SMC_RESET_L=3.4V What should I check next?

No history on this board, got it from a repair shop. It draws 0.11A from power supply, no fan PP3v42_G3H = 2.6V After checking some components around I thought it was U7090 (it was also slightly warm), replaced it and same result. SMC is also quite hot, PP1V2_S5_SMC_VDDC =2.6V too Does that mean...

Hello, This machine had a dead keyboard, dead battery, but the board seems ok. Test ASD144 is ok, but sometimes CPU temperatures are above 80º due to a "coreduetd" process using all the CPU time. I found a solution on the net, namely: In the Finder menu choose Go -> Go to Folder… Type...

This is a board that had water damage at trackpad level. No light on charger, battery not visible, fan full speed, ASD test showed: - SMC: 0x0 SMC Critical Sensor Check [FAILED] -- SMC is unable to read sensor - THSP Thunderbolt Proximity [FAILED] -- SMC is unable to read sensor -...

Hello, This board in good conditions, no liquid damage visible. Green light on charger, fans run, chime, USB activity on pendrive, but no display backlight and no video, no video also on external display. PPBUS_G3H=12.57V DP_MUX_EN=0V PP3V3_SW_LCD=0V PP3V3_S0=3.36V LCD_PWR_EN=0V PP3V3_S5=3.36V...

Hello, This board in good conditions, no liquid damage visible. Green light on charger, fan starts and runs 5 seconds then stops. No display backlight, no chime, just very short flash on USB pendrive. When fan runs I have: ALL_SYS_PWRGD=3.42V SMC_LRESET_L=3.3V PPBUS_G3H=8.43V...

Hello, I have this board in good conditions, no liquid damage visible. Green light on charger, a battery charges, but no fan. SMC_RESET_L=3.44V PPBUS_G3H=8.4V SMBUS_SMC_BSA_SCL=3.43V SMBUS_SMC_BSA_SDA=3.43V It manages to charge a battery, current 0.8A, with BATT_POS=8.4V SMC_BC_ACOK=3.43V...

Hello, I have this board with a graphic issue, see examples attached. When I play a video it's worse, I see just a blinking white display with some colour spots. Do you have by any chance A BIOS which use only the internal graphic? Maybe the internal is still good?

Hello, This board was water damaged. - green light ok, fan spins (after a while fan spins high even with trackpad connected) - no chime, no display, no USB activity with a mouse PPBUS_G3H=12.3V SMC_RESET_L=3.44V SMC_PM_G2_EN=3.48V PM_SLP_S5_L=3.31V PM_SLP_S4_L=3.31V PM_SLP_S3_L=3.3V So it is...

Hello, I have this board which had originally a short on PP3V42_G3H. I injected 3.4V on L6995, put alcohol everywhere and found an issue with U6400. For the moment I only removed L6400, I don't have a spare to replace U6400 yet. Now the board boots, internal display is ok, but very very slow to...

Hello, I have this board which was water damaged, I restored pp3v3_s5 which was 0V because of a shorted capacitor. Green light is ok, but no fan. pp3v3_s5=3.3V pp5v_s3=0V SMC_RESET_L=3.45V pm_slp_s3_L=0V pm_slp_s4_L=0V pm_slp_s5_L=0V smc_pm_G2_EN=3.49V So I understand the board is in deep...

Hello, Another board which looks fine, no visible water damage, but it is very very slow, and finally switches off by itself. It takes 2 to 3 minutes to boot, then after entering the password another 2 minutes delay, with the beach ball appearing from time to time. I put this board in a...

Hello, Here is board which looks fine, no water damage, but it has issues when displaying some graphics, or colors are not good, and later it freezes. See photos attached. It is able to run partly Heaven test, but look at the image... What can be the issue here?

Hello, Here are the symptoms: - green light on charger ok, current 1.15A - fan spins ok - red light on mouse ok on one USB port, off on the other. USB Link LED with OSX permanently off (any USB) - no chime, but beep if no RAM - nothing on LCD, nothing on external display I know this is the...

Hello, Here are the symptoms: - green light on charger ok, - fan spins ok - chime ok - red light on mouse ok - nothing on display. Sometimes grey screen one second or two when booting, sometimes no. Sometimes it lights on a second time for one second, sometimes no. - no video - current around...

Hello, Here are the symptoms: - green light on charger ok, current around 0.7A - fan spins ok - no chime, no long beep even if no memory - pulse of red light on mouse when starting, then nothing - nothing on display Measures: ALL_SYS_PWRGD=3.32V PPBUS_G3H=12.6V PP3V42_G3H=3.48V PP3V3_S5=3.33V...

Hello all, This board works but it has no audio, not even the chime at start up. Prohibitory sign is displayed when trying to change the audio level. No beep sound also if no memory installed. In system preferences > sound: there is nothing for output or input. If I plug a audio USB adapter...

Hello all, - Green light on charger OK, I=0.65A with U=18.5V - Fan spins OK - No chime, no backlight - Mouse in USB: pulse of red light when starting, then off All rails are ok Measuring - I put () for the theoretical values on the schematic: S0 rails: PPVCORE_S0_CPU (1.25V):0.99 PP1V05_S0...

Hello all, This is my first post! Don't hesitate to tell me where I can improve. So, I have a board A1286 mid 2012, 820-3330, with no video - Green light on charger OK, I=1.85A with U=18.5V - Fan spins OK - Chime OK - Backlight OK - Grey screen also on external screen, but no image - Mouse in...