R61 7738-A52 - Won't start, LED goes out when pressing power

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Insomniac1971
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R61 7738-A52 - Won't start, LED goes out when pressing power

#1 Post by Insomniac1971 » Fri Oct 28, 2016 7:18 am

Hi, I got an old 14.1" R61 which worked fine - but after being on the shelf for about 6 months it now has problems that it won't start. When attaching power cable I see power and charging LED's, but if I press power ON both LED's turn off.

I have been lucky to get it started by leaving it charging for 6 hours, and then it would power ON.

What is causing this and is it something I can replace myself?

Is it the 02K6572 CMOS battery that is drained? Normally that should just give an error on the screen.

I have 3 batteries, where one is less than 1 year old, and on all its the same thing.

Hope an Expert can answer this:)

JBJ
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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#2 Post by RealBlackStuff » Fri Oct 28, 2016 7:30 am

Switch it off, remove battery and charger, then hold the power button down for 20-30 seconds to discharge any capacitors and reset it.
Then just attach the charger and try to switch it on.
If OK, switch off, attach also the battery and try again.
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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#3 Post by Insomniac1971 » Fri Oct 28, 2016 7:43 am

Hi, Thank you for the answer but I already done this several times - to reset capacitors/remove static electricity.

The problem is that it will not work until the laptop has been charging for several hours. And next time it's on the shelf for a month or 2 I have to do these things again. I never had this problem with my T61 and my R500.

And can't remember having this problem before it were on the shelf for 6 months(1st time since I got it).

And if I turn it off and leave it for a couple of days then it work fine. Only over longer period it won't.

I left it here in the house(Denmark) when I were in the Philippines from december 2015 to end of may 2016(Cold period), and forgot to take out the battery. Then when I returned, I plugged it in(idiot) without letting it heat up to room temp first.

So question is if by doing so, I blew something?
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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#4 Post by RealBlackStuff » Fri Oct 28, 2016 7:51 am

Maybe you just "blew" that one battery?
Any problems with another battery?

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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#5 Post by Insomniac1971 » Fri Oct 28, 2016 7:55 am

It's the same with all my batteries.

Could it be that the CMOS battery got blewed and that is causing this? I had that on an Acer Travelmate, but here I got error on the screen and after replacing the CMOS battery it worked and it still working.
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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#6 Post by RealBlackStuff » Fri Oct 28, 2016 8:26 am

Remove the palmrest and keyboard, to get at the CMOS battery.
Remove it, then try again to start, it's a possibility.

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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#7 Post by Insomniac1971 » Fri Oct 28, 2016 8:31 am

I don't have time to do this now, so I will just take my hdd out and put in my external cabinet - Then on monday order new CMOS battery and then replace it - I'm pretty sure now, thats the cause.


Thank you for your input, sometimes its good to bounce ideas of someone else:)

I Will post update here when I get the new CMOS battery:) Should be thursday:)


JBJ
Live life to to fullest:) I do!
Thinkpads: T500, R500, X300 - (dead R61(intel), T61(Nvidia))
Other: Toshiba Satellite L40-139(dead)

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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#8 Post by thinkpadcollection » Fri Oct 28, 2016 11:59 am

I just had a generic memory module die while R40 was resting on shelf.

Cheers, thinkpadcollection

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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#9 Post by Insomniac1971 » Mon Nov 21, 2016 4:52 am

Ok, I had time yesterday:

Took it apart and changed the Cmos Battery with a new one - nope
Took it totally apart and changed thermal grease(fell of like dust) with artic silver - nope
Removed modem and wifi - nope
Removed the CPU and looked at it - nothing to see
Re-inserted CPU and tried to start - nope
Removed everything that could be removed from Motherboard tried to turn ON - nope
Removed and tried both RAM seperately - nope

Nope = no reaction except for the Power LED flashing and no reaction from the fan

Conclusion: Dead motherboard or CPU - don't have a CPU to try with.

@#¤%&"*§ :x :evil: :(

Anyone in Denmark that want to pick it up for spareparts can get it for 400 dkk incl. orig. charger and 1 year old 11.1V 6600mAh battery and 2 old ones - 14.1" Widescreen, 2GB Ram, DVD-CDRW, Danish keyboard, Touchpad, HDD caddy + rubber spacers(minus HDD).

I'm not shipping it unless buyer pre-pay and pay for shipping.

EDIT: I tried the above without the battery inserted, and later with battery but without powersupply - nope

Haven't tried without any of the 2 ram modules - as suggested by RealBlackStuff - will do so tomorrow
Last edited by Insomniac1971 on Tue Nov 22, 2016 11:04 am, edited 2 times in total.
Live life to to fullest:) I do!
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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#10 Post by RealBlackStuff » Mon Nov 21, 2016 5:41 am

One last question:
if you remove all RAM, but everything else is in place, then try to start, does it then beep 1-3-3-1?
If not, you have indeed a dead motherboard. :(

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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#11 Post by MikalE » Mon Nov 21, 2016 10:18 am

Could it be a bad switching circuit from internal to external power combined with a bad battery?
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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#12 Post by Insomniac1971 » Fri Aug 18, 2017 10:18 am

Tried without ram - nope

I sell it for parts, as I got my hands full with some nice machines: 15.4" R61, 15.4" R500, 15.4" T500 and last 13.3" X300:)

Thanks for the help guys:)

JBJ
Live life to to fullest:) I do!
Thinkpads: T500, R500, X300 - (dead R61(intel), T61(Nvidia))
Other: Toshiba Satellite L40-139(dead)

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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#13 Post by Insomniac1971 » Sun Sep 17, 2017 10:32 am

Hi guys, lets say I want to make a frankenpad, could I use a T61 motherboard in this R61 laptop?

Or use my parts from this R61 on a T61?

Qualified answer please, from someone who tried this or can read through the jungle of Lenovo parts.

Specs: R61 7738-A52

R61 and R61i Systemboards that fit physically in the laptop(according to my research):

Currently - without 1394 port
42W7842 P42X4682
http://i.ebayimg.com/images/i/281677638 ... -l1000.jpg
http://i.ebayimg.com/images/i/322299770 ... -l1000.jpg

Alternative
42W7868

with 1394 port
42W7843
42W7869
----------------------------------------

T61 systemboards mentioned in the HMM - I need to know if these will fit:

System board assembly, Intel GMA X3100 GM965 with 1394 for T series - FRU# 41W1487

For models:
6378-CTO, 1Xx - 6379-CTO, 1Xx - 6480-CTO
7658-CTO, 11x, 12x, 13x, 14x, 15x, 16x, 17x, 18x, 19x, X2x, X3x, X4x, X6x, X8x, X9x
7659-CTO, 11x, 12x, 13x, 14x, 15x, 16x, 17x, 18x, 19x, 1Ax, 1Bx, 1Cx, 1Dx, 1Ex, 1Fx, 1Gx, 1Hx, 1Jx, 1Kx, 1Lx, 1Mx, 1Nx, 1Px, 1Qx, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Qx, 2Sx, 2Ux, 2Vx, 3Ax, 3Bx, XAx
7660-CTO, 11x, 12x, 13x, 14x, 15x, 16x, 18x, 1Ax, 1Bx, 1Dx
7661-CTO, 11x, 12x, 13x, 14x, 1Nx, 1Px, 2Ax, 2Bx, 2Sx, XAx

System board assembly, Intel GMA X3100 GM965 with 1394 for T series FRU# 42W7866
For models:
6378-CTO
6379-CTO
6480-CTO, P1x, P2x, RSx
7658-CTO, N4x, N5x, N6x, N7x, N8x, N9x, NAx, NBx, NCx, NDx, NEx, NFx, NGx, NHx, NJx, NKx, NLx, RUx, RVx
7659-CTO, 2Tx, N2x, N3x, P1x, P2x, P3x, P4x, P5x, P6x, P7x, P8x, P9x, R8x, R9x, RAx, RBx, RCx, RDx, REx, RFx, RGx
7660-CTO, NWx, P1x, P2x, P3x, P4x, R1x, R2x, R3x, R4x, R5x, R6x, R7x, RPx, RRx, RTx
7661-CTO, P1x, P2x, P3x
Live life to to fullest:) I do!
Thinkpads: T500, R500, X300 - (dead R61(intel), T61(Nvidia))
Other: Toshiba Satellite L40-139(dead)

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Re: R61 7738-A52 - Won't start, LED goes out when pressing power

#14 Post by TPFanatic » Sun Sep 24, 2017 1:49 pm

R61 and T61 14.1" widescreen use the same motherboards and the same lids.
Daily driver: lenovo T500 P9700, WUXGA, 8GB
Ultraportable: IBM lenovo X60s
Home theater: lenovo T420

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