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The Macbook came in for no video issue.
I was able to get external video.
I got 0V on backlight and screen voltage.
When took out the board and connected to start measuring one the ICs on the Jack got burned, no sure why. I am testing with another jack now...
Now I am not able to test the...
Hello.
I have replaced both CD3215 that had liquid damage but same issue.
The USB ICs that I replaced loop on 5V. The other USBC port (assumed ok) turn on and then off the USB C Metter.
Any idea?
Hello
I have this clean board stuck on 5V
-USBC1 takes 0.165A
-USBC2 takes 0.145A
Not sure how to start with this M1.
What is the equivalent to PP3V3_G3H?
PP3V8_AON: 0V
Same issue
-All "SPI Bus Series Termination" resistors in page 47 are ok. (All 22ohms)
-tried this bios your provided and same https://drive.google.com/file/d/18m-YhIlNhX4Uf5njH8KHmRGZelvEXnD_/view
Any idea? Thanks!
I replaced the SMC for one of the same model board but same issue.
-No video on screen
-No external video
-Takes 800mA
-CPU gets hot
-Tried other BIOS (from the donor board) and same
-No USB activity detected.
Any idea?
Hello
iMac 2011
Reballed the GPU 1 year ago, today returned because of distorted video so I reballed the GPU again.
Now the imac wont boot, no video.
LED501 is on.
Fans spin super fast.
Is there a way to know if the GPU is working?
Thanks
Hello
iMac A2115 2019 with board 820-01236-A,
A few months ago i received this iMac, wont turn on.
It was a BIOS issue, so I reflashed the BIOS with a file found online. I just changed the Serial number section on the file and the iMac worked okay.
It came back and wont boot. This imac has...
I am waiting the CD3215 chips to replace them but my customer wants me to replace the complete board.
How can I know whats the capacity of the SSD on these boards? What is SSD chip?
I was able to find a marking on the board saying the speed the CPU and VRAM but I cannot fin the specs for the...
I replaced the SMC (from a 820-3476 ) and now I get the:
-PP5V_S3: 5V
-All big coils voltages (including CPU ones)
-PPVIN_S0SW_LCDBKLT: 0V
-TBTBST_BOOST: 0V
-the board takes 300mA
-power button responds
-no video
Do you think this can be an issue of the SMC no beign from the same model?
I do not have a known good battery to test at the moment.
Customers battery seems to be charging but no power.
Tested with Original 85W and customers battery and no power.
SMC Bypass same problem.
Should I try ultrasonic cleaner? (Since I found some corrosion around SMC)