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 motion, the sequence of post codes is: E0/E8, 88/E6, 0C/0E, 80/0E, 28/17, 3A/28, 2A/3A, 2E/2E and finally 2F/2E.
The POST code table says that code 2F means: "Enable cache before system BIOS shadow". However, as I tested both CPUs in another machines AND the cache is located on the CPU cards, I wonder what the given post code indicates. Any other ideas?
Jan
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 motion, the sequence of post codes is: E0/E8, 88/E6, 0C/0E, 80/0E, 28/17, 3A/28, 2A/3A, 2E/2E and finally 2F/2E.
The POST code table says that code 2F means: "Enable cache before system BIOS shadow". However, as I tested both CPUs in another machines AND the cache is located on the CPU cards, I wonder what the given post code indicates. Any other ideas?
Jan
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