Prime broken main board bad

[Han]

(04-20-2017 04:49 PM)Bipman Wrote:  Hi all

I picked up a bricked HP prime calculator and found the issue. The main board has been zapped at some time and it looks like someone opened it with a metal screwdriver. I've included the photos from DropBox in case you've seen it before. Is there a main board document somewhere describing component details?

Bipman

https://www.dropbox.com/s/ltjdzj0cht30ti...e.JPG?dl=0

https://www.dropbox.com/s/8iqqdjd4xz8x8e...3.jpg?dl=0

I can't tell if that was just a bad job in terms of cleaning up rosin. Are there other clues that suggest it was "zapped"? Have you tried cleaning that spot with rubbing alcohol? If it's just rosin, then it will clean up very easily with alcohol.