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I got fully working A2337 and swaped board and the same issue so for sure something wrong on the board. Compared JE900 in diode modes and only on one line got strange reading: JE900/3-6 PP3V3_AON_VDDMAIM .320 (good board .178) "Also check around U600." Cant find U600 but I think you mean...

JE900/11 .383 JE900/13 .320 (boardview says 0?)

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...

Tried DFU revive and restore with the same error. libusbrestore error:21 [com.apple.MobileDevice.MobileRestore - 0x15 (21)]

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?

Forced method works. Did 'Revive" during 'Installing System' around in 1/3 process with error: "Gave up waiting for device to transition from DFU state to DFU state. [com.apple.MobileDevice.MobileRestore - 0xFCA (4042)] Tested with know good battery with 60% of charge. Data is the most...

L7810 0.78V L7812 0.82V L7811 0.84V L7809 0.75V L7808 0.75V L7807 0.75V L7806 0.76V L7815 1.09V L7814 1.10V L7816 0.90V L7817 0.89V L7813 1.79V L7819 0V | .240 in diode mode L7820 0V | .240 L7822 0V | .133 L7821 0V | .133

Cant enter DFU.

No luck

"Check resistance (ohm scale) between PPBUS_G3H and L7702." 3.97 kilo ohm "Remove R6900 and check again diode mode to ground at PPBUS_G3H." When was checking R6900 I found crack on U6903. After U6903 has been replaced I got high value in diode mode on PPBUS_G3H. With soldered F7000 I got 12.26...

""F7000/1 got now .050 in diode mode" Isn't that pin 2 in fact???" Yes, pin 2 - sorry for mistake. L7600 401 L7660 265 L7702 040 L8100 082 L8102 091 L7270 018 L7210 004 L7410 003 L3500 473 LB700 479 L7030 470 L8410 840 L6900 190 L9080 299 L9020 239 L9030 286 L7806 011 L7810 270 L7812 030 L7813...

OK, today there is 5V and 0.35A from charger. Removed F7000 and on F7000/1 got still 12.55V and F7000/1 got .022 in diode mode. During comparing coils in diode mode found short to ground on L7660. Injected low voltage to PP3V3_G3H and U7800 was getting warm. Removed U7800 and short on...

Will check rest of coils soon. With battery connected got 20V and 0A from charger with short spike to 0.025A. Got 9.60V on PPVBAT_G3H_CONN so will test with charged battery soon.

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...

Sorry. Yes, machine is working fine with new U5200

P_IN 5.15V AUX_DET 1.28V SMC_RST_IN 0.16V VDDA 5.1V VDDP 5.1V IRQ* 0.1V EN_MVR 5.1V AUX_OK 1.24V AMON 0V BMON 0V

C5250 had 0V. Checked input voltage on U5200 and there was 5V so replaced U5200 and all working fine now. Thanks for help.

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...

Hmmmmm all works fine now.