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NOT AVALAIBLE HISTORY DFU MODE IS NOT RECOGNIZED PP3V3_G3H=3.3v PP5V_G3S=5.1 PPBUS_G3H=12.35 PP3V3_G3H_RTC=3.3 PP1V8_SLPS2R=3.3V PP1V2_S3=0V PPVCCEDRAM_S0_REG_R=0V

l3401 pin1 a pin 2 there is continuity; pin3 pin 4 not continuity mode dido pin 3 0.40 and pin 4 0.66 wifi connected

does not detect any network, shows hardware not installed

hello, this board does not detect my wifi, I already tried with another wifi card, it remains, can you help me what measures to take for this damage

no story, SMC_TCK=3.4 SMC_TMS=3.4 SMC_TDO=3.4 SMC_TDI=3.4 PP3V3_S5_AVREF_SMC=0v PP1V2_S5_SMC_VDDC=0v SMC_EXTAL=0v SMC_XTAL=0.85 a veces varia de valor SMC_CLK32K=0v SMC_WAKE_L=3.1 WIFI_EVENT_L=0.27 GND_SMC_AVSS=0v

ok, What brand of solder paste and flux do you use?

I did reflow and it did not work, I am using solder paste and flux of not high quality. Do you think it has to do? do I reballing smc with a high quality solder paste?

Is there any test for this reference similar to the ASD? What do you use?

I did a u9300 reflow ensuring good soldering, I got u9300 coil voltages again, I assemble the equipment but when I connect the battery flex cable the equipment does not detect a hard disk, I remove the battery flex cable and if it detects a hard disk, it is possible

change smc it worked fine for a while, then it didn't turn on again, it only turns on bypass mode but without video. It is possible that the battery is causing it or another component

you mean bad solders underneath u9300

I changed U9300, voltages appeared in all the coils, the equipment entered the system tested several times, I assembled the computer and started and came back with the same problem question folder and voltages no appear again in coils u9300

ok, ok change other card with vram in good condition and it worked, however do ASD shows hard drive fan error, is it necessary to change it? imac have original hard drive

I already did smc reballing, this problem persists fan restarts constantly, ¿change the smc? no story available

hello this board not green light,not turn on this measure, test good i/o board. PPVRTC_G3H=3.4 PPBUS_G3H=8.19 PP3V42_G3H=3.4 PP3V3_S5_REG_R=0v SMC_RESET_L=3.4v SMBUS_SMC_5_G3_SDA=3.4 SMBUS_SMC_5_G3_SCL=3.4 mode diode SDA =0.545 SCL=0.553 macbook is that it came with a generic charger

excuse me in bybass mode fan spin to max these are measurements when board fan restarts constantly SMC_PBUS_VSENSE=2.1 y baja 0 si se mantiene ciclicamente SMC_DCIN_VSENSE=2.8 y baja 2.7 ciclo SMC_CPU_VSENSE=1.16 y baja 0 ciclo SMC_CPU_ISENSE=0v SMC_GFX_VSENSE=0v SMC_GFX_ISENSE=0v...

Can you get it into macOS in SMC bypass? yes AVREF_SMC voltage=3.3v when plugged in charger it restarts constant fan; without giving video. just power on with video and enter system bypass mode and fan rotate normal

I don't have a good board to check:(, I was checking resistors and r9350 on the board has a OL multimeter other times megaohms, and the voltage PICCOLO_IUVD=1.1v I don't know if it is a normal value.

estos son algunos que pude medir, otros van solo a cpu, y hay otros que van a unos condensadores debajo de una tapa metalica u8600, esa tapa metalica se puede quitar facilmente? Pin1= 5.1. pin2= 5.1 Pin 3= 1.78. pin 4= 1.78 Pin 5= 0v. Pin =6 0v Pin 7=3.3 pin8=3.3v Pin 11...

ok,check continuity in points left/right and they are fine, others are only cpu I could not check these points