hi.
I have a problem with my Model 3 board, so I need help.
When I turn it on, I see strange patterns all over the screen and the text is messed up. And I can't proceed any further on that screen in the attached screenshot.
The graphics board is fine. If you swap it with another CPU board, the screen comes out without any problems.
So I confirmed that it was a problem with the CPU board, and I visually confirmed that there was no damage to the PCB.
When I enter the test menu, it crashes and I cannot do a memory test.
I suspected the scroll memory and replaced IC17 and IC18, but the symptoms are the same.
If anyone has experience fixing these symptoms or knows of an IC I should be suspicious of, please let me know.
I have some spare Model 3 boards, so I can get ICs.
I have a problem with my Model 3 board, so I need help.
When I turn it on, I see strange patterns all over the screen and the text is messed up. And I can't proceed any further on that screen in the attached screenshot.
The graphics board is fine. If you swap it with another CPU board, the screen comes out without any problems.
So I confirmed that it was a problem with the CPU board, and I visually confirmed that there was no damage to the PCB.
When I enter the test menu, it crashes and I cannot do a memory test.
I suspected the scroll memory and replaced IC17 and IC18, but the symptoms are the same.
If anyone has experience fixing these symptoms or knows of an IC I should be suspicious of, please let me know.
I have some spare Model 3 boards, so I can get ICs.
