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  1. R

    820-00045 not turning on

    the little led lamp on the board lights up but and that's it, no image no sound.
  2. R

    820-3437 the PP3V3_S4SW_SNS is missing

    a 820-3437 board has orange light on the charger, all the S5, S3 and S4 rails are present except PP3V3_S4SW_SNS U8050 gets PP3V3_S5 but PP3V3_S4SW_SNS_FET_R and SMC_SENSOR_PWR_EN are missing there is alsono short on the line
  3. R

    820-4924 not turning on

    the board has orange light on the charger and these rails are present: PPBUS_G3H PP5V_S5 PP3V3_S5 PP3V3_SUS but there is no sign of S3 and S4 rails I've already checked for a short to ground on them and there is no short nor a burned or damaged prob point. ,
  4. R

    820-3476 macbook pro RAM issue

    the board beeps 3 times and the fan spins I re-flowed the ram but didn't help. how can I find out which one of these 16 peaces is the actual problem?
  5. R

    820-3476 macbook pro

    a 3476 macbook pro it has the orange light on the charger and all the rails are present except SMC_SENSOR_PWR_EN.
  6. R

    820-000165 No SSD

    the board looks fine but it doesn't read SSD on U3740 pin P3V3SSD_VNOM is 0.9v I replaced the R3741 and R3742 all the other pins are fine I get 3.1v. any suggestions?
  7. R

    820-3437 turns on and chimes but no green light

    820-3437 board which it turns on for a few seconds turns of and again turns on and stays on but there are two issues 1: even thou there is no green light on the charger the board stays on after second time. 2; second time that it turns on and stays on the screen lights up for a second and after...
  8. R

    820-3437 backlight fashes

    a 820-3437 The voltage on the back light booster D7701 gradually drops from 33v to 8v. the logic board turns on after 2 second turns of and than turn on ans stays on. any suggestion?
  9. R

    820-3115 doesn't recognatize the LCD.

    My 820-3115 doesn't recognize a known working LCD assembly. LCD_IG_PWR_EN is missing. I have cpuvcore, USB mouse gets steady light even after reconnecting it. Any suggestions????
  10. R

    820-00045 where is PP5V_S0 created?

    could you please tel me where is PP5V_S0 created please?
  11. R

    820-00045 PP5V_S0 is missing

    the little led lamp is burning but the PP5V_S0
  12. R

    820-3115 turns on and cpuvcore is present but no image

    Hello, Would any one be so kind to help with this issue that i'm facing, please. A logicboard 820-3115 has green light on the charger and it turns on but there is no video. I measured : U9000 pin 2 and 3 have 3,42. and LCD_IG_PWR_EN on pin 1 is missing. L7510= 0.84v L7520= 0.84v, L7550 = 0.35v...
  13. R

    820-3115 LCD_IG_PWR_EN is missing

    Hello, Would any one be so kind to help with this issue that i'm facing, please. A logicboard 820-3115 has green light on the charger and it turns on but there is no video. I measured U9000 and LCD_IG_PWR_EN on pin 1 is missing. pin 2 and 3 have 3,42. pin 4 5 and 6 are 0. (Sorry for my bad English)
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