Electronics > Repair

What more i can do?

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Sorama:

--- Quote from: fzabkar on November 23, 2024, 08:02:01 pm ---
--- Quote from: Sorama on November 23, 2024, 07:40:23 am ---
--- Quote from: fzabkar on November 23, 2024, 04:51:43 am ---The BIOS was tested on a working board. In any case, the OP is waiting for a chip programmer. Hopefully a dump will tell us something.

--- End quote ---

And did the bios of non working board worked fine in the working board?
--- End quote ---

Obviously, yes, otherwise we wouldn't be here. ;-)

--- End quote ---

If it is that obvious, why are we measuring signals if we know the bios chipset is the culprit ?

Harry_22:

--- Quote from: 222Lab_Test222 on October 29, 2024, 11:09:12 pm ---
--- Quote from: Sorama on October 29, 2024, 08:17:22 am ---the only issue is that it beeps constantly (but works apart from that) , or are there other issues?

--- End quote ---
Yes the power supply is good, There is long beep no break, I even change MSDOS as well as RAMs with new working one to check if they are fault BUT still same.

--- End quote ---

222Lab_Test222:

--- Quote from: Sorama on November 24, 2024, 12:30:39 pm ---
If it is that obvious, why are we measuring signals if we know the bios chipset is the culprit ?

--- End quote ---

BIOS is fine, I even put the working board BIOS to non working board, it still beep on non working one.

fzabkar:

--- Quote from: Sorama on November 24, 2024, 12:30:39 pm ---
--- Quote from: fzabkar on November 23, 2024, 08:02:01 pm ---
--- Quote from: Sorama on November 23, 2024, 07:40:23 am ---
--- Quote from: fzabkar on November 23, 2024, 04:51:43 am ---The BIOS was tested on a working board. In any case, the OP is waiting for a chip programmer. Hopefully a dump will tell us something.

--- End quote ---

And did the bios of non working board worked fine in the working board?
--- End quote ---

Obviously, yes, otherwise we wouldn't be here. ;-)

--- End quote ---

If it is that obvious, why are we measuring signals if we know the bios chipset is the culprit ?

--- End quote ---

If the problem is in a WACOM chip, then it's game over. AIUI, Harry_22 is trying to home in on the exact point where the problem occurs, presumably in the hope that it is caused by a support IC.

222Lab_Test222:

--- Quote from: Harry_22 on November 24, 2024, 12:07:16 pm ---
By the way, check IC23 Pin10 and Pin11 at the same 5us/div scale. As usual, working and non-working.


--- End quote ---
ok here, i see changed signal from pasts one.

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