A20p

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Throttle Thumb · #1 Post by **Throttle Thumb** » Tue Feb 08, 2005 6:30 pm

I hope somebody can help me out here. I have a ThinkPad A20p. When I power up, the screen stays black. The drives cycle and the only light that is on after that is the circle with the Z. There are no beeps or sounds. I replaced the main board and the LCD power inverter card. I tried conecting to an external monitor and still get nothing. I am out of ideas.

Any help will be greatly appreciated.

Thanks

Deb Suran · #2 Post by **Deb Suran** » Wed Feb 09, 2005 8:39 am

Have you tried replacing the CMOS battery?

Throttle Thumb · #3 Post by **Throttle Thumb** » Wed Feb 09, 2005 9:20 am

I have not tried to replace the CMOS battery. I guess I could, but I thought the computer would still start even if it was dead.

JHEM · #4 Post by **JHEM** » Wed Feb 09, 2005 9:31 am

Throttle Thumb wrote:I have not tried to replace the CMOS battery. I guess I could, but I thought the computer would still start even if it was dead.

No, it can't/won't start with a dead CMOS battery and your symptoms are exactly what I would expect to see if that were the case.

Regards,

James

Throttle Thumb · #5 Post by **Throttle Thumb** » Wed Feb 09, 2005 2:06 pm

Changed the CMOS battery, and still does the same thing. I don't get it. Please help.

JHEM · #6 Post by **JHEM** » Wed Feb 09, 2005 2:23 pm

Time to open her up and reseat the memory and then the CPU if the problem continues.

Regards,

James

Throttle Thumb · #7 Post by **Throttle Thumb** » Wed Feb 09, 2005 3:24 pm

I gave reseating a shot. Just keep those suggestions comming.

Deb Suran · #8 Post by **Deb Suran** » Thu Feb 10, 2005 9:04 am

I assume you mean you reseated the RAM chips. Reseat the CPU chip next - it's a bit more involved.

Throttle Thumb · #9 Post by **Throttle Thumb** » Thu Feb 10, 2005 10:20 am

I have completely disasembled the thinkpad before. I again, took the CPU out and locked it back in place. I am running out of things to replace, and do. I know the hard drive is good, because I placed it in a USB enclosure and hooked it up to my desktop. The motherboard and LCD power inverter are new. I put in a new CMOS battery. All I have is a black screen and the fan running.

Any other suggestions?

Deb Suran · #10 Post by **Deb Suran** » Fri Feb 11, 2005 11:04 am

I'm sorry to be the one to tell you that your motherboard is probably toast.

AbsoluteRaleigh · #11 Post by **AbsoluteRaleigh** » Fri Feb 11, 2005 3:57 pm

Was the replacement system board used?

Which FRU board did you replace it with?

Throttle Thumb · #12 Post by **Throttle Thumb** » Sat Feb 12, 2005 10:24 am

Motherboard was new old stock

FRU 08k3317009

friedrich-eugen · #13 Post by **friedrich-eugen** » Sat Feb 12, 2005 2:51 pm

Hello,

sorry, to possibly add to the confusion, but ...

... are You sure, that the backlight/lcd is okay, have You tested Your nb with an external screen?

You said, it started, drives circling, but You did not see anything. I lived up to something rather similar (as symptom) while my A31P was some month old (!). I did not find out, until I happened to recognize, that the screen-lightning had died away...

...

AbsoluteRaleigh · #14 Post by **AbsoluteRaleigh** » Wed Feb 16, 2005 4:35 pm

Throttle Thumb wrote:Motherboard was new old stock

FRU 08k3317009

FRU 08k3317.

What is type # from the bottom of the laptop?
(eg: 2628-xxx)

A20p

A20p

Cmos Battery

Re: Cmos Battery

Battery Changed

Reseated Mem and CPU

Reseat CPU

FRU Motherboard

A 20p

Re: FRU Motherboard

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