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Hello! I have a problem with 2 machines, exact same model same issue.
They are HP ENVY 27-b100 All-in-One Desktop, Model No.27 B210
On bootup, they give both led and speaker beeps together, 3 long and 4 shorter beeps.
The power supplies are original HP 200W, and i bought 2 replacement PSU's...
Ok idk how i did this, but i messed up with the measurements.
I retook diode mode for these, here's the results :
PP2v5_NAND_SSD0 0.390
PP2v5_NAND_SSD1 0.413
PP1V8_SSD0 0.348
PP1V8_SSD1 0.403
MacBook Pro 2019 A2141 820-01700 NAND Issue Stuck in DFU
Ok, here's an issue ive got on a A2141 820-01700 MBP 16' 2019. No signs of life, 5.06v 0.0a on usb-c meter, on each 4 usb-c ports.
Nand voltages are missing.
I've found no shorts at all so far, no signs of heat via thermal camera...
It oscillates from 1.6 to 1.8vdc and the magsafe light goes from green to amber by itself constantly with a few seconds delay.
How can i press the power button and at the same time poke on the board with both meter leads ? there's some tricks i don't have it seems.
Hello ! Ok, what do i need to be able to flash this bios ? I haven't tried to boot it in windows or linux, but the hardware still has an issue since i have to hold the power down no ? It also goes dead and comes back alive for no apparent reason - some day it powers on - next day it's dead and...
Hello, i have this macbook air here 820-00165 which was dead, clean no signs of water anywhere. Found out with some help that smc_reset_l was low (0.9v) and replaced U5110 and this voltage got back to it's normal value. Got green and orange light on magsafe, it booted but was sluggish to death...