Electronics > Repair

What more i can do?

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Harry_22:
Have you checked them from both sides? SW2 also has different positions

222Lab_Test222:

--- Quote from: Harry_22 on November 26, 2024, 07:02:16 am ---Have you checked them from both sides? SW2 also has different positions

--- End quote ---
SW2 is fine, SW2 3rd PIN is HIGH other are LOW.
Whereas SW4 all PIN are HIGH. BUT if there is beep i need to turn off so 4th PIN is set LOW.

Harry_22:

--- Quote from: 222Lab_Test222 on November 26, 2024, 07:13:12 am ---
--- Quote from: Harry_22 on November 26, 2024, 07:02:16 am ---Have you checked them from both sides? SW2 also has different positions

--- End quote ---
SW2 is fine, SW2 3rd PIN is HIGH other are LOW.
Whereas SW4 all PIN are HIGH. BUT if there is beep i need to turn off so 4th PIN is set LOW.

--- End quote ---
Don't trust your eyes.
Have you measured them?

Harry_22:
Resume
Tracing the Q0 (Data) signal you can see that the no-good (NFG) board goes only through seven identical clock cycles with the good board. Please see below all the traces from NFG and the Good boards.

I suspect that one Data or Address signal is corrupted.
To clarify this please measure all the lines of Address (0...17) and Data (0...15) buses (sorry I have no ideas for today).
I suggest you do a manual reset to make measurements easier.
Please see the attached picture.

If you doubt the shape of the signal, look it on the working board.

Poroit:
G'day All,

It looks like the fault finding is Bogging Down. :(

I have attached a summary of Replies that I cannot see were resolved. Kindly review and advise.

I emailed Jotrin yesterday for a WE001BF Datasheet after chatting to WACOM but I won't hold my breath waiting.




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