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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?

Could I use one from a 820-3476?

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)

I reballed the SMC and same issue. Should I try with another one? (If so, could I use one from a 820-3476?)

Always worked with these boards with PS, but confirmed with known good 85W MS and same issue. R1410: 9.98KOhm (out of the board)

PP3V3_SUS: 3.4V PM_DSW_PWRGD: 3.6V SMC_ADAPTER_EN: 3.6V PCH_DSWVRMEN: 3.3V PM_BATLOW_L: 560mV RTC_RESET_L: 3.4V PCH_SRTCRST_L: 3.4V PCH_INTRUDER_L: 3.12V PCH_INTVRMEN: 3.44

PM_PWRBTN_L: Drop Pulse ok PM_SLP_S4_L: Nothing happens, always 0V.

Hello Little corrosion around smc, cleaned and reflowed. GREEN LIGHT: OK PPBUS_G3H_R: 12.8V SMC_ONOFF_L:3V PP3V3_S5: 3.6V P3V3S5_EN: 3.6V PP5V_S3: 0V P5VS3_EN: 0V PM_SLP_S4_L: 0V Any idea? Thanks!

Hello 820-00928-A -Stuck on 5V -Water damage around: UB400, UB300 and UB000 -PP3V3_G3H: 3.3V -No short to ground on big coils. Any idea? Thanks!

Also, tried known good bios and same issue

Hello. I have this board doing 3 beeps. Costumer mentioned 1 memory slot died first. (Same issue on both slots) GPU is dissabled with GMUX programming. PP0V75_S0_DDRVTT: 0.75V PPDDR_S3_REG_R: 1.6V Thanks!

Will check. What is AC2?

I cant get it in DFU mode, do I need to have the battery present to enter DFU?

Hello guys! 820-01700-A stuck at 20V 0.05A originally liquid damaged, other store cleaned board (no corrosion) and reflowed U7800, U1200 and U9580 PPBUS_G3H: 12.55V PP3V3_G3H_T:3.3V PP5V_G3S: 5.1V No short to ground on any other coil. No voltage on any other coil Any idea? Thanks!!

Hello guys, Need to replace microphone on one iMac A2115 2019 with board 820-01236-A, the PN is: "821-01072-A MFC0919" Everything I found, says "821-01072-A MFC2217" for A1419 2017 iMac. Do you think/know if they are compatible?

Hello I received this A1708 (820-00480-A), the screen shows image, it shows the login screen por a moment and then only some lines. This looks like screen issue to me but I do not have one good to test so I would need to other the replacement. You think this is screen problem? The computer...

It seems it was BIOS issue...

This IMac turns on but wont boot (no video and no caps lock), customer mentioned there was a electrical problem on his house. I know there are not schematic or boardview (if I am not wrong). Any idea?

macbook fixed