Weird the p próbę on a Slot 1 motherboard. \ VOGONS

Weird the p próbę on a Slot 1 motherboard.

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First post, by flynth

Posted on 2022-11-16, 22:35

flynth Offline

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I recently bought a cheap "probably working/used to work years ago" Slot 1 PCchips M726 motherboard.

Of course it is 100% dead... However, I'm hoping to be able to fix it. As a first step I was going to wash it. Then I saw this:

The attachment Compress_20221116_232738_8729.jpg is no longer available

The attachment Compress_20221116_232738_8490.jpg is no longer available

It looks like a temperature sensor, but all photos of this board I found online don't have have it. So I wonder if it should be lying flat perhaps, or be somewhere else

Also I worry about breaking it off when washing...

So could someone let me know if this is something usual on such motherboards? Or did someone perhaps add it?

Reply 1 of 5, by pentiumspeed

Posted on 2022-11-16, 22:53

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Yes, a temperature probe. This started with socket 462 era.

Cheers,

Great Northern aka Canada.

Reply 2 of 5, by T-Squared

Posted on 2022-11-16, 22:54

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No, that's normal. It's for the CPU.

Reply 3 of 5, by Thermalwrong

Posted on 2022-11-16, 23:21

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From what I recall of that era, PC Chips did advertise that it had hardware monitoring for things like overheating - maybe to improve their reputation for reliability 😀 They're not the only ones to add it, Aopen added something similar with their slot 1 boards.
That chip next to the thermal probe is definitely a hardware monitor chip looking at its datasheet and I think the thermal probe in your picture is where it's supposed to be and oriented just fine to work for monitoring the CPU temperature. It'd probably work best touching the cpu heatsink but not exactly easy to do on slot 1.

From the M726 manual:
Hardware Monitoring
♦ Built-in hardware monitoring for CPU/system temperatures, fan speeds and mainboard voltages

Reply 4 of 5, by swaaye

Posted on 2022-11-17, 03:37

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The early Pentium II and Celeron chips lack an on-die thermistor.

AMD didn't have one until Athlon XP.

Reply 5 of 5, by flynth

Posted on 2022-11-17, 08:35

flynth Offline

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Good to know, thank you 😀

BTW, the subject should say "weird temperature probe", but autocomplete knew better 😒

I have cleaned the board yesterday and I managed not to damage that probe. Also I read the BIOS with a programmer and it reads fine (3.3). So it is not the cause of the failure.

Also I ordered a post code card I got for very cheap so hopefully I'll get that MB working at some point.

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