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Intergraph TDZ 2000 mainboard post code 2F/2E
Hi,
I try to repair an old Intergraph TDZ 2000 from 1998. It is a dual Pentum II machine based on Intel 440LX chipset. There is a non-removable bios chip named PhoenixBios B1787840. I cannot see any physical damage to the board. All caps look OK.
It shows no picture and POST stops with code 2F/2E regardless whether or not any graphic card is plugged in. If memory is removed, it stops on previous code 28/17 and stars beeping. I tested both CPUs in another machine and I also use RAM from another machine.
When I recorded video of POST card and played it in slow...
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OPTI-495SLC 386 WB mainboard fails to POST but not after reset
Hi,
I'm repairing OPTI-495SLC 386 WB manboard: [url]https://stason.org/TULARC/pc/motherboards/U/UNIDENTIFIED-386-OPTI-495SLC-386-WB.html[/url]
It has some damage due to battery leak that I have cleared. I measured affected wire patches and they seems to be OK. The damaged part is shown on the attached picture.
The board often fails to POST when I turn the PSU on. Most often POST card gives AMI BIOS 12/13 error codes but no code or different codes are also shown sometimes.
When I reset the board while the PSU is running or if I switch...
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