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Gateway 2000 Solo Laptop P3C questions

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First post, by scruit

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Just picked up a Gateway P3c. No ram and no power supply.

The power supply is a rectangular 4-pin thing. The label on the bottom of the laptop says "15v 1.7a, 18v 1a Battery Charge"

Anyone know where I can get a pinout for this power supply. I have the mobo out and I believe that p1 and p2 are the two voltages in, p3 is ground and p4 is some kind of sense line or something.

Also, no ram. It has a pair of 36 pin sockets and there's a complete P3c on ebay that shows the two 8mb memory sticks labeled "hb56tw132d-78l" but I can't find anything on that.

If anyone knows of a good repository of gateway laptop info (like ardent is for Ps2 etc) then that would be awesome.

(Under one of the ram slots of 4x MT4LC1M16C3TG-7, which are 1m dram. Maybe that's 4mb base memory, or maybe it's cache?)

Reply 1 of 2, by amigopi

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Hi! Does this 72 pin SO-DIMM memory stick look familiar? https://ram-co-shop.de/8-MB-FastPage-RAM-72-p … M332V213AT-L7_1

It seems to match the stick shown in a (not necessarily the) Gateway laptop manual here: https://www.manualslib.com/manual/56653/Gatew … ?page=25#manual

(According to the same manual, this laptop has 8 MB of RAM on board, which might explain the mystery DRAM you see.)

And re: the charger, could this one be correct? https://www.pchub.com/gateway-common-item-gat … cadapter-p19781 – I mean, it does have "P3C" in its name and it has 4 pins and is kind of rectangular... 😎

Into the eyes of nature, into the arms of God, into the mouth of indifference, into the eyes of nature...

Reply 2 of 2, by scruit

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Thank you for the response. Apologies it took me a week to see it!

Yes, that's the power connector! I was able to get the laptop started by figuring out where the power pins went to on the board. Knowing the pinout (at least, knowing the + and gnd) I can plug in solderless breadboard connectors from my arduino kits into the laptop and get it running from my bench power supply. I even tried 3d printing a sleeve that will hold the connectors in the correct place to fit, however the wall of the connector are too small to make sense in a FDM printer (0.5mm in many cases) and I think a resin printer is probably a better option.

Also, yes, there is some memory on board already so it was able to boot up to the bios.

I'll check the memory against the slots I have.

I appreciate you taking the time to respond.

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