Below you will find a detailed description from him, which I translated into English
In fact, the cause of your troubles can be seen in the picture - a liquid was spilled on the mainboard, and he caused several paths to be cracked under this PCI slot. When washing it was green, I have no idea what it is.
In addition, the 74F280, 74F125 and 74HC123 were similarly flooded and soldered by somebody, so I replaced them all with new ones.
In conclusion, the reason for not having PCI is the interruptions that caused the following problems:
- parity check error on all slots
- ADD8 address missing on PCI1 slot
- No Target Ready signal on PCI1 slot
In addition, one pin was soldered in the socket under the XC7372 and XC7354, So I replaced all the socket under the Xyllinx.
I also decided to replace all of the 74F245 and 74F543 intermediates (simplified to be called buffers) between Xylinx and PCI and ISA connectors.
You understand that distance advice is like fortune telling.
It is hard to say
If I understood correctly, it has a white screen with so called. The bar code (in the attachment you have what it looks like on your Hades), the reason I was looking around in the XC7372, just take the NVRAM to get such effect. Most likely it has some breaks in the area, but it is a must to find the meter. As for the RAM sockets, it can be replaced, but it's a tedious and difficult job, the plate is difficult to soldered.
He told me that, If he wants, You can send a mainboard + graphics + memory to him.
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