Sony Vaio Z40UL MB Faulty onboard RAM

[DSpawnZ]

Hello to all.
I have a Z40UL mobo (MBX-278) with faulty onboard RAM (4Gb)
I can't find the schematic to see if it's possible to disable onboard ram.
What happens if I just remove all the onboard ram chips and install a memory module on the empty slot?.

Machine boots fine but gives blue screens.
Memtest86 confirmed the faulty ram

Any advise would be great

[caspian]

Re: Sony Vaio Z40UL MB Faulty onboard RAM

search youtube to find videos similar to your laptop's problem.

[JaroTech]

Re: Sony Vaio Z40UL MB Faulty onboard RAM

Hi, you have the RAM number written on the chip, why you don't change the chip for a new one instead of disabling the RAM on the board, it will be easier to do so.

[mcplslg123]

Re: Sony Vaio Z40UL MB Faulty onboard RAM

Dear Jarotech, Everyone dont own a rework station-So it does makes sense to findout ways to disable onboard ram.

[JaroTech]

Re: Sony Vaio Z40UL MB Faulty onboard RAM

Dear Jarotech, Everyone dont own a rework station-So it does makes sense to findout ways to disable onboard ram.

Sorry, he said he could take out the RAMs, I thought he might put some new ones instead.

[DSpawnZ]

Re: Sony Vaio Z40UL MB Faulty onboard RAM

Thanks for the replies. I have a rework station but no access to new chips.
Owner does not want to wait until I buy them in China, so I thought disabling onboard ram and using a sodimm would be fine.