Search results

Board with liquid damage. PPBUS_AON = 12.29V PP3V8_AON = 3.78V PP5V_S2 = 0V (pulsing) PP1V8_S2SW = 0V (pulsing) PP1V8_S2 = 0V (pulsing) PP1V2_AWAKE = 0V (pulsing) PP1V2_S2 = 0V (pulsing) PP0V95_S2SW_VDD2L = 0V (pulsing) PP0V855_S2SW_VDDCIO = 0V PPVDD_ECPU_AWAKE = 0V PPVDD_DISP_AWAKESW = 0V...

Cant see any corrosion. PPBUS_AON 12.19V 3V8_AON 3.79V Both CD3217 have correct diode mode values and voltage. Any idea?

Board had small liquid damage on C8101 (PPBUS was shorted, replaced cap and there is no short). U7210/30 are affected by liquid as well. Detected in DFU and restore done without any errors. No chime, no light on caps lock. Board only connected to charger have 20V and 0.08A (CPU get lettile...

Cant find and corrosion on the board. At the start I had 5V from charger. Tried to "revive" in DFU and had error 21. Tried restore and had error 4014. I reflashed SoC ROM and have 20V from charger but still cant restore it. Error 4014. Looks like faulty NAND?

Cant find any corrosion on the board. Tried three batteries and on all of them have the issue. Mac drain battery when in sleep or even turned off. In the evening battery level around 60% and in ther morning battery is 0%. Same issue will three batteries. I removed the board, connected battery...

Customer tried replace battery on his own. I found one of the UB400 had short on PP3V3_UPC_TB_LDO. Replaced UB400 and it boot now but no KBD/TPAD Tried with known good TPAD with flex and same issue. I found there was no diode mode readings on J6701/17 (TPAD_3V3_SPI_EN). Replaced U6855 and...

Board with heavy liquid damage for data recovery. Every couple of seconds there is tiny amp spike on charger. U3100/200 LDOs have correct voltages. PPBUS 12.26V PP3V3_G3H 3.30V U7000: P_IN 5.14V AUX_DET 1.28V SMC_RST_IN 0.0V (0.586 in diode mode) VDDA 5.12V VDDP 5.12V AMON 0V BMON 0V...

Got 5V on charger and 0A, every few seconds it go to around 0.25A (so should switch to 20v) and then back to 0A. Cant find any corrosion. PPBUS 0.02V (0.440 in diode mode) Removed F7000 and still on F7000/1 got 0.02V. All diode valus on LDOs around all CD3215 are correct. Voltages are correct...

Cant find any liquid damage. Have 20V on charger it charge the battery. At the beginning after power button press there was no chime and after 2-3 minutes there was short max fan spin and the same issue in loop. Entered in DFU, tried restore and had error 10. PP2V5_NAND_SSD0/1 have correct...

No liquid damaged. Found fried U8209, U7650 (P5VS4_SW had short and pad was fried), U8400 and there was short to ground on F7000/2. Then found U7600 was getting hot. All of that has been replaced. Short on PPBUS is gone and there was 5V from charger and then it switch 20V for split second...

MacBook works fine when powered by battery. When charger connected board get hot (battery is charging), fans on max and after minute or two it switch off. When charger connected mosfet get very hot - used thermal camera. So depends what port is connected then QB400, QB300, Q3100 or Q3200 gets...

Small liquid damage on C9092, U8600, U9580. Three USB C ports have 5V 0.28A One have 5V 0.02A in cycles/loop. Found faulty DB529 but still same issue. Replaced CD3217 (UB300) and still the same issue. Any idea? When ccharger connected 'OK' ports only T2 get warm. PP2V5_NAND_SSD0/1 not shorted.

No liquid damage. Removed F7000/1 and when connected charger have 12.27V on pad 1 of F7000. Pad 2 (PPBUS_G3H) is shorted to ground - 0.9 Ohm resistance to ground. Big coils: LA950 27.5 Ohm LA870 44 Ohm LA860 43.8 Ohm LA850 40.4 Ohm LA750 6.4 Ohm L7231 3.4 Ohm L7330 17.3 Ohm L7221 4.3 Ohm L7211...

Cant find any corrosion. There was 5V on both ports and both CD3217 chips was getting hot under thermal camera. Both replaced and now got 20V and 0.05A-0.1A from charger. Only T2 chip gets little worm. PPBUS_G3H 12.28V PP5V_G3S 0.018V PP5V_S5_LDO 0.012V PP3V3_G3H_RTC 3.28V PP3V3_G3H 3.22V...

With battery 20V 0A from charger (MagSafe 3got no light, tested on MagSafe and USB C) PPBUS_AON = 11.05V Board only: 5V and 0.24A from charger, after few seconds drop to 0.06A. PPBUS_AON = 11.99V Diode mode on PPBUS_AON is correct. PP3V8_AON = 3.79V Removed F5200 and F5200 and F5201/1 got...

Audio board was affect by liquid. There was webcam connector on display board badly damaged and LP670 melted (client don't care about webcam). Replaced audio board, it boots but there is no audio from internal speakers. When pressing vol UP/DOWN I see on the screen volume change. Audio input...

Cant find any liquid damage. One port charge only on one side, nothing on another side. 'Mac USBC & EDP meter" shows correct diode mode readings of JB500. Replaced CD3510 just in cases and no progress. Diode mode values RB630, QB630 are correct. When plugged on the faulty side got 0V on FB200...

After liquid damage. Connector on Display board was burn out. Testing with know good display assembly and flex cable. PPVOUT_LCDBKLT = 51V PP3V3_SW_LCD_CONN = 3.27V PP3V3_SW_LCD = 3.28V EDP_PANEL_1V8_EN = 1.78V PP5V_SW_LCD_CONN = 5.1V PP5V_CAM = 5.1V Any idea?

No corrosion on board. At the start there was 5V and 0.1A from charger. One of the CD3215 had burn mark and then I found PPV3_UPC_XA_LDO was shorted to ground. I replaced that IC, short gone and then I found other CD3215 got short as well on PPV3_UPC_xx_LDO. At this stage PPBUS at F700 was 0.1V...

Cant find any liquid on board. PPBUS_AON (pin 2/F5200) got 0V (.473 in diode mode) PP3V8_AON 0V and .340 in diode mode FF200/1 both got 5V on both sides. PP3V3_UPC0/1_LDO correct diode mode and voltage when charger connected PP1V5_UPC0/1_LDO_CORE correct diode mode and voltage when charger...