Made some pics maybe someone sees something I clearly don't. http://imgur.com/gallery/QdSQC I've set all as marked on the board it self. It seems to not quite line up with both this: http://stason.org/TULARC/pc/motherboards/T/TMC-RESEARCH-CORPORATION-486-PAT48PG-VER-2-0-PAT48.html and this: http:// …

My PAT48PG4 1.2 doesn't seem to recognize both the CPU and RAM properly. The DX4 CPU's I've tried are all recognized as enhanced DX2's at the right clockspeed. How can I fix that? And does that even matter in the first place? As for the RAM it sees the amount of RAM very inconsistantly, sometimes it …

Update, Zida board still isn't funtioning. But think I've got a breakthrough on the second. I started noticing that literally every 3.3V CPU didn't work and didn't become warm. Which got me thinking, maybe it doesn't get the right voltage (and at this point I was praying it wasn't always 5V and near …

On the Zida, yes. But not on the new board, just keeps cold. Jumpers on both boards are fine, triple checked. Although I don't understand the DRAM settings here http://stason.org/TULARC/pc/motherboards/T/TMC-RESEARCH-CORPORATION-486-PAT48PG4-VER-1-2A.html (but considering the seller used the ram I …

Sorry for the double posting, got another motherboard from the same seller as a replacement from the 4DVS one, the new one being a PAT48PG4 (VER. 1.2A). It seems to have the exact same issues... I also bought a diagnostics ISA card from ebay (those super cheap ones) and that doesn't give any sort of …

The proper approach to dealing with busted traces is to use a multimeter on the continuity setting to check for them. Find a trace that looks busted, test it, and if it's broken, try to solder a wire from one point to another. Since these are multi layer boards, you might have to get a bit more …

http://imgur.com/gallery/E0x4J/comment/1070463503 Yea, under the bios there is a lot of corrosion...

I've checked the corroded traces, non of them are faulty (although far from pretty). That's the first thing I checked when I noticed that corrosion.

I recently bought this board of Ebay as working, but when I tried testing it it didn't do anything except in rare occasions give a beeptone about "CMOS Shutdown Register Read/Write Error". Could someone help me get this board running or is it dead? It's a Zida 4DVS (also called Tomato 4DVS, …

I know a NiMH pack will work, but I want something more future proof like the AAA packs. (not to mention working away those packs look a lot neater)

Not that I know of, my other motherboard does has one of those external battery headers but those don't seem to be directly connected to the battery. So I was wondering if it was possible to connect that up, maybe even with some added circuitry to compensate for it's non rechargability if that is …

I was wondering if you could add an external battery pack to motherboards that don't support it. So is there some way to add one to a board that doesn't support it? (I had ordered a Zida/Tomato board 4DVS but that does't seem to have the headers to support an external battery, which led me to this …

Hey, I'm new here and found this forum when looking for info after I found a 486 and decided to build my own in that case. My first question is this: Can someone identify this GPU/IO board and tell me a bit about it? It's named TK 85C418GVIO 4J D08 and the only info my google fu can find is …