Fan mocups of 2017 mac pro
- #FAN MOCUPS OF 2017 MAC PRO SERIAL NUMBER#
- #FAN MOCUPS OF 2017 MAC PRO PRO#
- #FAN MOCUPS OF 2017 MAC PRO FREE#
The measured value of Pin 3 is 533, which is normal. The measured value of Pin 1 is 437, which is normal. Then run diode mode measurement of three pins on D6905 one by one. Clean with PCB Cleaner after the logic board has cooled enough. For better soldering, add some low-melting point tins during the soldering process. Apply some BGA Paste Flux and solder with Hot Air Gun at 430℃. Next thing we do is to solder a new D6905. The measured value is 531, which is normal. Then run diode mode measurement of D6905 Pin 3 again. Let's start with U6990 replacement.Īpply some BGA Paste Flux and solder with Hot Air Gun at 430℃. Also, we need to replace with a new U6990. We can conclude now that the faulty condition is related to C6990. The measured value is 593, which is normal. Apply some BGA Paste Flux and detach C6990 with Hot Air Gun at 430℃. The faulty condition might be related to C6990 and C6991.ĭetach C6990 first. Yet U6990 might has been damaged as well. We can conclude that the faulty condition has nothing to do with U6990. The measured value is 0, which indicates short-circuited condition. Run diode mode measurement of D6905 Pin 3 again. Detach U6990 to check if the short-circuited condition can be solved.Īpply some BGA Paste Flux and detach U6990 with Hot Air Gun at 430℃. The circuit consists of U6990, C6990 and C6991. Confirm relevant circuit of D6905 Pin 3 power supply with drawing. The measured value of Pin 3 is 0, which indicates short-circuited condition. The measured value of Pin 1 is 444, which is normal. Run diode mode measurement of the D6905 detached bonding pad. Apply some BGA Paste Flux and detach D6905 with Hot Air Gun at 430℃. We can conclude that D6905 has been damaged. The measured value is 526, which is normal. Run diode mode measurement of D6905 Pin 2. Run diode mode measurement of D6905 Pin 1. The measured value is 98, which is lower than normal value. Run diode mode measurement of D6905 Pin 3. The measured value is 0, which indicates short-circuited condition. Then locate the corresponding position of D6905 on the logic board. PPVIN_G3H_P3V3G3H is converted from compound diode D6905. Locate D6905 with bitmap. The measured value is 342, which is normal. Roll out the drawing and locate the Pin 2 SUP of U6990 main power supply (also known as PPVIN_G3H_P3V3G3H). Switch to diode mode and run diode mode measurement of L6995. Confirm the working condition circuit of U6990 with drawing. Traces of damage can be found on chips around U6990. Then locate the corresponding position of U6990 on the logic board. PP3V3_G3H is outputted from U6990 via L6995. Then confirm the power supply source of PP3V3_G3H. =PP3V3_G3H_UPC_XA is converted into PP3V3_G3H via R3000. Confirm U3100 main power supply Pin H1 VIN_3V3 (also known as =PP3V3_G3H_UPC_XA). Confirm L7030 relevant circuit PPDCIN_G3H (also known as =PPHV_EXT_G3H).Ĭonfirm the working condition of U3100. Roll out the maintenance drawing and bitmap. Normal voltage value should be around 13V. The measured voltage value is 0V, which is abnormal. Plug in AC adapter and measure the voltage of L7030. The measured value is 348, which is normal. Run diode mode measurement of main power supply inductor L7030. Then confirm the board number of logic board. Then remove the lower case.ĭisconnect the battery and detach the logic board. Pull the lower case away from the hinge area to separate.
#FAN MOCUPS OF 2017 MAC PRO FREE#
Pop free the clips securing the lower case to the chassis.
#FAN MOCUPS OF 2017 MAC PRO SERIAL NUMBER#
Confirm the serial number on the lower case first. Press power button, and the MacBook won’t turn on. This time we will share with you a complex MacBook won’t turn on repair case caused by multiple faulty components like capacitors, inductors, etc. Which also increases difficulty of its repairability - it scored a 2 out of 10 on ifixit repairability scale (10 is the easiest to repair).
#FAN MOCUPS OF 2017 MAC PRO PRO#
As the latest MacBook model in 2017, Macbook Pro 13" (A1708) is different from previous models in exterior design and interior logic board circuit construction.