Electronics > Repair
What more i can do?
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fzabkar:

--- Quote from: smaultre on December 02, 2024, 12:00:13 am ---Does it trying to read BIOS? than MS-DOS from ROM? How long ? Compare with working board. Check adress&datalines.
--- End quote ---

These questions have been addressed in numerous scope traces.
smaultre:
I think that's the wrong switch config or after battery replacement or draining.
Or something like that. Topic starter have several boards with same issues..   
222Lab_Test222:

--- Quote from: smaultre on December 02, 2024, 03:44:12 am ---I think that's the wrong switch config or after battery replacement or draining.
Or something like that. Topic starter have several boards with same issues..

--- End quote ---

Can you clarify more on it?
222Lab_Test222:

--- Quote from: Harry_22 on December 01, 2024, 09:27:04 pm ---Ok, heat it and try to reset.
Please measure the Data and Address bus as agreed.

--- End quote ---

I spend more than 8 hours on heating different parts of PCB, with 100 degree and air blow of 2( Full air blow is 8.). I tried to figure out whats going on BUT i do not see any changes with my naked eyes.

The same results on non working as well as working board.
222Lab_Test222:

--- Quote from: smaultre on December 02, 2024, 03:44:12 am ---
Or something like that. Topic starter have several boards with same issues..

--- End quote ---
Same issues board like beeping has many solutions in this board,
1. The first is CMOS Battery, When beeping if i change this CMOS battery, it stops in some cases.
2. Second is RAMs, If there is DRAM or SRAM issues, or its been placed in wrong slots it also beeps.
3. The EPROMs damaged, if they are damaged it also beeps.
4. If there is issues in CPU, like some power faults it also beeps.

In Maximum cases, the beeping is solved by this above any cases, BUT in recent boards, the problem is not solved.
Every above things is fine BUT still no work...
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