A1466 820-00165-A no boot

[hgoncalves]

Hi,

I have an A1466 820-00165-A that dosen't boot.

I get green light, fan spin, CPU gets hot, all voltages in the big coiils are present, but don't have internal or external image, nither usb acivity.

Can you help?

 

[2informaticos]

Any fault history available?
PLT_RESET_L comes high?
Did you try known good BIOS?

 

[hgoncalves]

Hi,

I have no history, and it has no signs of liquid or corrosion.

PLT_RESET_L has 3.3V.

I didn't try known good BIOS. Should I?

 

[2informaticos]

Try it.
Also check all SPI Bus Series Termination resistors and their traces.

 

[hgoncalves]

Hi,
The BIOS update worked. This is my first sucesseful CLEAN ME sucessuful upgrade. I believe that there are some extra configuration steps needed, but because it is my first, i don't know exactly what they are. Should i change the serial number with medusa? What steps are needed now?

 

[2informaticos]

You can change the serial number with HxD, or other hex editor.
Reflash the BIOS and finally fix Fsys checksum with Medusa.

 

[hgoncalves]

It worked.
TKS!