Ok, I've seen that SPI flash is read through PCH with a clock from 20 Mhz to 50 MHz; this is why I cannot see a nice signal with my 8Mhz oscilloscope...
I will search for an (at least) 100Mhz logic analyzer and will check again.
Is this a good way to go, or do you have better hints on how to proceed to find the issue?
Thanks again
megcox
New Member
Last Activity: 10-19-2024, 07:47 AM
Joined: 09-27-2024
Location: Veneto
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ASUS PD551LA REV2.0 not booting after one week power off
[FONT=Calibri]Hi everybody[/FONT]
[FONT=Calibri]My ASUS PD551LA (REV 2.0), after a week powered off with power adapter disconnected, is not booting anymore.[/FONT]
[FONT=Calibri]If I plug the adapter, the battery is charging, the power led lights but after pressing the power button there is no sign of life.[/FONT]
[FONT=Calibri]I've found the Boardview file of the motherboard and the schematic of PU551JA (that looks 99% compatible).[/FONT]
[FONT=Calibri]I've disconnected the battery and all devices except screen (I removed also the RTC battery, hope it's not... -
Hi everyone,
I loved electronic since a was a kid (50 years ago). I'm now an electronic engineer and I builded and repaired electronic devices for several decades of years.
Nowadays, components are getting berely visible and beloved DIP is almost no more used so I decided to update my soldering skills on SMD components too.
Now I'm challenging myself by trying to repair my son's laptop so I landed here searching for help.
Thanks for your support.Leave a comment:
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