R50 New intel mobo FRU 39T5510 Error 1-3-3-1 beeps

[760ED]

I have an R50 15" XGA , used to have ATi (M7 ?) GPU mobo, with the usual ati problem.

I have replaced the mobo with FRU 39T5510 listed as an R50/R51 Intel GPU mobo 10/100 & Sec chip (an equiv of 93P4201, can any one confirm ? not much info about on 39T5510, took 3-4 google pages to find out it's an equiv). It's a factory refurb and does not look like its been used since the refurb (still sealed).

I put the machine together today , no probs until I booted, where I got the 1-3-3-1 beep error (Dimm or System board). Power on and Battery status (green) lights are on (not running it on AC), screen is black (although I didn't attempt to up the brightness), there's no HDD in unit.

There are 2 x 256 Mb PC2100 SoDimms in there (1 Samsung & 1 Infineon , both have FRU numbers), both of these sodimms were working with the old Ati mobo. Really can't see both sticks failing at the same time (there were no bangs, pops or burning smells while the old mobo was on).

On the new mobo , the 2 sticks have been tried both separately and together in both the mobo and the expansion slots. Same result 1-3-3-1 beep.

So after getting so rudely beeped at, I went back and fore through the lenvo site and the HMM again.

I had always thought R50's had a choice between ati & intel Gpus. The HMM states intel gpu boards have type numbers 2883-2895 , yet on the lenvo web site the only R50 types are 18xx (ati gpu). Its the R51 that have type numbers 28xx. (and 18xx).

On the memory Compatibility web page http://www-307.ibm.com/pc/support/site. ... GR-55644#r , PC2100 & PC2700 is listed as being compatible in the R50, but only PC2700 is compatible on the R51.

So have I got the above right, and only the R51 had an intel gpu option and not the R50 ? (I now know the R50e had an intel option)

If so then do you think it's probably the PC2100 causing the computer to fail POST and not a duff mobo ? (Didn't want to go out and get PC2700 just find out it was the mobo after all)

Is there anybody on the forum running an (R50/51) intel GPU board with PC2100 ? If so, then that wrecks my little theory.........

cheers for any help.

[Harryc]

I checked the trwbook, and the R50 never had an Intel GPU option. All R51's take PC2700.

[ajkula66]

In addition to what Harry said, a machine that should run PC2700 would most likely boot with PC2100 in 99% of the cases, so it seems to me that the board is at fault...

Good luck.

[RealBlackStuff]

Borrow a stick of PC2700 RAM, before you return it!
The speed of PC2100 might be too low to be recognized! (yours may be in the 1% that Ajkula66 did not mention)

[A31]

at least if you borrow some PC2700 RAM and it works then you know your system board isn't dead!! Buying RAM is much cheaper than buying a whole new motherboard!!

[760ED]

Hi,

Thanks for the replies, glad it seems I got the R51 and intel GPU right, these thinkpads with all their closely related models and their various options, and options on the options can be a bit of a headfull when you first start.

When I wrote the 1st post I hadn't heard back from the mobo seller after I'd emailed him about the possible problem with the mobo. Until you get a reply you never know how they're going to be to deal with. Turns out they seem pretty decent, and offered a replacement straight away (only have Ati though). So I've asked them for a little more time to test this mobo with new memory.

A stick of PC2700 was ordered yesterday afternoon , should be here middle/end of next week, I'll test the mobo again then, Will update the thread with the results then.

Oh and thanks for the reminder in the trwbook HarryC , forgotten about it, hadn't looked at them since I was messing with the 760 a few years back.

[760ED]

In addition to what Harry said, a machine that should run PC2700 would most likely boot with PC2100 in 99% of the cases, so it seems to me that the board is at fault...

Good luck.

I was thinking about this at the time, it's all going to depend on what the default mem bus speed is set to in the BIOS.

If the default is 166Mhz (Haven't seen an R51 BIOS yet, don't even know if mem bus speed can be altered) , then I think it would need to be a good stick of PC2100 to be able to boot at that speed. From experience (mostly desktop 3200 and higher) standard DDR won't take much more than somewhere around a 10-15% overclock before becoming unstable, so running PC2100 @ 166Mhz, I think could be pushing standard DDR a little too far ?

I'll know for certain end of next week, so fingers crossed lol.

[ajkula66]

I've ran PC2100 in R50p with no issues regarding booting whatsoever.

YMMV

[760ED]

The R50/50p run PC2100 and PC2700 (and some T series). This PC2100 was from my R50.

There was a guy who posted in underclockers bluetooth thread (in the T4x section) who had a working R51 Intel gpu mobo transplant, then tried to put older mem (didnt state the speed) from his T4x into the R51 mobo, and it gave the same error I've got, was ok when he took it out.

So I still got hope

[ajkula66]

760ED wrote:

The R50/50p run PC2100 and PC2700 (and some T series). This PC2100 was from my R50.

Sorry, but this is incorrect when it comes to R50p. I've owned dozens of them and have never seen one that left the factory with PC 2100.

T40/p is the only T4 series model that utilised PC2100 RAM.

I've booted T41 and T42 with PC2100 RAM, so I stand behind my original statement that your board is most likely shot.

Good luck.

[760ED]

I didn't say they came from the factory with PC2100 , I said they're capable of running them. That goes for the R50/p, 51(ati), T40/p up to T42/p

Since early models came with PC2100 , I'd guess they're backwards compatible to keep bios updates simple ,1 BIOS covers all those ati gpu models. Like I said originally its the BIOS that determines what mem speed can and can't be used (within the MC's H/W specs).

R51 (intel gpu) models only ever had PC2700, so no need for backwards compatibility with PC2100, therefore no BIOS settings for PC2100, therefore no booty

..and yes the mobo may well be duff , but even a working one will not boot PC2100.

[ajkula66]

760ED wrote:

..and yes the mobo may well be duff , but even a working one will not boot PC2100.

I'd be more than willing to bet claiming the exact opposite, but since I'm obviously not getting my point across, and am NOT about to buy an Intel-based R51 just to prove you wrong, all I'm going to say is "good luck". Seriously.

[760ED]

Yes, well hand the cash over you just lost a bet Guess what I'm writing this on... (well trying to write I'm all over the place with this k'brd)



PC2700 installed , computer (Ex-R50 , now with a R51 Intel Gpu Mobo) boots no problem. Wish I'd bought more Dram now

Cheers for the help Guys.

[ajkula66]

No problem I'll buy you a pint (or two or seventeen) the next time I'm in Cardiff, or if you ever come around here...

All's well that ends well, said a fairly unknown bard...

[BruceDickinson]

Just a quick word to say I got the same error code on an R51 39T5510 mobo when I used PC2100 RAM.