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2 x R50e machines

R30/R40, A30/A31, G40/G50 and Z60/Z61 Series. NOT for AMD-Ryzen.
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solidpro
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2 x R50e machines

#1 Post by solidpro » Wed Sep 14, 2022 2:04 pm

Hi

I've got 2 x R50e machines. They're almost economically worthless but I feel it's my duty to get them to the best condition and spec possible. Both have smashed screens so I'm putting a Samsung Glossy screen in one (hate them but variety is spice) and an LG-Philips matte in the other.

However. One is an 1834-S9G machine with a crappy Celeron M processor. The other is an 1834-S5G machine with a much more macho Centrino CPU. Does anyone know if both machines have the same socket and if so what CPUs can I safely 'OEM' these up to?

Thanks!
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SAIYAN48
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Re: 2 x R50e machines

#2 Post by SAIYAN48 » Wed Sep 14, 2022 2:13 pm

According to the Psref, Celeron to Pentium should be doable and the Pentium M 735 seems to be the highest CPU.
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axur-delmeria
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Re: 2 x R50e machines

#3 Post by axur-delmeria » Wed Sep 14, 2022 8:55 pm

Yes, they have the same socket, since they're both 1834's.
Daily driver: X220 4291-C91 i7-2620M

Backup: X601 Core 2 Duo T8100
Toy: X60F Core Solo U1300
On loan: X220 4291-P79 i5-2520M
In pieces: two retired but working X61Ts
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solidpro
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Re: 2 x R50e machines

#4 Post by solidpro » Mon Sep 26, 2022 6:15 am

I thought I'd try and give this R50e one more crack of the whip. I'd learned recently that these motherboard have various tiny fuses on them, which can blow.

It's totally dead - no power whatsoever. Does anyone know where there are fuses to check on this R50e motherboard? FRU 39T5537

Thanks
WANTED: 130, 220, 300 ,240Z, 235, 300C, 310x, 315D, 320, 330x, 345x, 350x, 355x, 360x, 365x, 385x, 390X,
ANY 5xx Series, 700, 700C, 701CS, 720, 720C, 730TE, 750, 750C, 750P, 755x, 760x, 765x, 770x
ANY 8xx Series, A20P, A21p, A22p, A30p, A31p, R30, R50, R50p, R52, T40p, X2x, X3x, X40

SMA
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Re: 2 x R50e machines

#5 Post by SMA » Mon Sep 26, 2022 12:02 pm

I can only think of 1 fuse that could cause a totally dead machine.
That is the one located near the DC in jack.

Alternately you could try running it on battery or power it through a port replicator / docking station.

If it was me to deal with this, then I would go straight to the MAX1631 chip and measure dc voltages.
Download the datasheet so that you know it's legs.
The DC voltage from the AC Adapter should arrive as input to this chip and it should have 3 dc outputs.
Measuring the input and output voltages to/from this chip will tell you a lot about what to do next.

Also, if there is some short on that mb, then you may be able to identify an area getting hot. You can use your
fingertips to measure temperature. But careful, don't get burned.

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