Required motherboard model C3M266-L for VIA connection
Required motherboard model C3M266-L for VIA connection
Daniel P.S. Sorry for the poor English, it's not my first language.
Hi everyone, I'm looking for a VIA C3M266-L Mainboard. I'm working on a German non-profit sailing ship whose radar system stopped working about two weeks ago. I've been trying to find a replacement but haven't found any suitable boards. The makers of both the radar and the board don't have spare parts in stock. Also, another board won't fit into the radar's housing. Reinstalling the Windows XP OS will be tricky since we don't have the software and the manufacturer won't provide it because it's an old system. I'm considering used options but prefer new ones if possible!
Daniel P.S. Sorry for the poor English, it's not my first language.
Skewald980
06-25-2022, 07:38 PM #2It seems you're asking about a particular issue with a microATX Socket370 board. The question highlights confusion over its specifications and functionality.
FireBrand2000
06-25-2022, 08:39 PM #3You likely have sufficient funds for different purposes. It’s better to invest in verified hardware rather than wasting time on distractions. Regrettably, you’ll receive limited assistance, mainly due to NGO concerns and widespread skepticism about certain claims.
The mainboard is original hardware, no longer sold, so acquiring one isn’t just a casual search—it’s a necessary fix. It’s simply swapping faulty parts. VIA has sold it to other firms and private buyers, suggesting there might still be some left. The challenge with other boards is that their enclosures are tailored specifically for this unit, meaning components like coolers, rams, etc., must fit precisely: 
mercy192roks
06-26-2022, 09:41 AM #4We're not an NGO-ship. We're a three-masted vessel about 50 meters in length, sailing with young people across the Baltic Sea during the summer. In winter, we host around 35 students, some teachers, and a crew of several. Over the six to five months, they follow regular classes while learning ship handling, meal preparation for everyone, cleaning facilities, etc. Our journey follows Germany → Grenada → Panama → Cuba → Bermudas → England and back home. All personnel work voluntarily, which means we don’t rely heavily on funding. I’d rather invest in youth training than replace outdated equipment like our 14-year-old radar system. Back to the main point... The mainboard is original hardware, no longer sold, so acquiring one isn’t just a casual search—it’s a necessary fix. It’s simply swapping faulty parts. VIA has sold it to other firms and private buyers, suggesting there might still be some left. The challenge with other boards is that their enclosures are tailored specifically for this unit, meaning components like coolers, rams, etc., must fit precisely:
I've been browsing online a bit too, but it seems highly improbable you'll locate this precise Socket 370 board anymore. It's quite outdated by now. Still, if a perfect match isn't available, you might find something compatible with Windows XP and similar I/O ports. On the AMD side, check microATX boards featuring Socket A, 754, or even 939. For Intel users, early Pentium 4 models like Socket 423, 478, or possibly the LGA775 could work. Integrated graphics would likely be a better fit unless you had a dedicated card. With all these choices, it's unlikely to find a suitable board—though a cheaper CPU might need cooling in a tight space, which could be managed by using a weaker processor or lowering its clock speed. Have you thought about connecting a budget Pentium 4 or early Core laptop with an external docking station for extra ports? Or do you require specific PCI slots for radar equipment? Also, make sure you're certain the motherboard itself is intact; otherwise, it might be the power supply that's failed.
Yes, I believe the issue lies with the board itself. As you mentioned, we have a dedicated PCI card for the radar. The operating system is built on Windows XP, which has been specially adapted for this setup, making it incompatible to simply swap in another board and install Windows XP.
Ye I know I know, just waging possible options in case you won't be fortunate enough to find the board. It being an embedded XP is probably less important than drivers for the radar card, and as you said the manufacturer isn't providing you with any software... I also read on another forum that you don't even have access to the ship right now as it has sailed to America - quite a pickle >.< Do you know what exact radar is that? Maybe the software has been uploaded somewhere by someone, it would be a miracle but who knows, for sure it would make it easier if it were necessary to reinstall OS on new hardware. Edit: Also, is the type of damage on board known? On the german forum someone suggested trying to replace the capacitors on existing board. Looking through images it apperas the board is using all through-hole capacitors so they should be very easy to replace even for someone unskilled in electronics. Perhaps it's worth a try and they're all cheap, off the shelf components.
Faze_Dashix
07-10-2022, 11:57 PM #10They're unsure about the issue with the board. The onboard engineer checked it and didn't find any clear signs of damage. They examined all other parts and everything seems to function correctly, leading them to believe the mainboard might be faulty. When attempting to start the system, there was no response—no beep or signal. The power supply appears to be working properly.