Sony VPCSB (MBX-237) dead after bios flash

[Francisco.s]

Re: Sony VPCSB (MBX-237) dead after bios flash

Hello, my name is dani and also I have problems with this board. You speak of pu9 but I can not find it, I know it's the at5208-3.3ker, but I where they locate on the plate?
Thank you very much

Is probably, that this component had been removed, and manufacturer had substitute this circuit with another one. (it probably depends on the revision of motherboard)

[orientalsniper]

Re: Sony VPCSB (MBX-237) dead after bios flash

Here's another reference thread that can help the rest of you.

https://www.badcaps.net/forum/showthread.php?t=29549

[silvernadal]

Re: Sony VPCSB (MBX-237) dead after bios flash

He encontrado estas medidas del sn608098 y deberian ser las buenas, los pines que no salen a tierra miden 0v. :

pin 4- 3,29v
pin 5- 3,29v
pin 6- 19,4v
pin 9- 0,4v
pin 10- 0,4v
pin 11- 0,06v
pin 13- 0,05v
pin 14- 2,07v
pin 15- 0,36v
pin 16- 0,4v
pin 17- 0,19v
pin 20- 0,03v
pin 24- 1,82v
pin 25- 0,57v
pin 26- 2,08v
pin 27- 2,08v
pin 30- 0,5v.

[Francisco.s]

Re: Sony VPCSB (MBX-237) dead after bios flash

He encontrado estas medidas del sn608098 y deberian ser las buenas, los pines que no salen a tierra miden 0v. :

On pin 7 there must be +5VALW_LDO, as its name mention, ALW= always. (siempre)
Regards.

[silvernadal]

Re: Sony VPCSB (MBX-237) dead after bios flash

Hello.
Thanks for the help.
I can not have the 3.3v or 5v. Only I have 19v on pin 4 and 6 of sn0608098, which surprises me that the measure in dcbatout irfh3707 or in sir460dp is 0v, or the terminals that connect to docking db 0v too. This means that I have a short dcbatout or this later. I already change the capacitor from here that was in short.
Excuse me for my english.
Thank you very much.

[silvernadal]

Re: Sony VPCSB (MBX-237) dead after bios flash

http://i42.tinypic.com/2nlg2vb.jpg

Hello.
I have made this scheme sn0608098 of pin 3, 19 and 7.
You could say me if it´s okay?

Thanks.

[silvernadal]

Re: Sony VPCSB (MBX-237) dead after bios flash

Hello.
I let this plate stop and now I've started again.
I changed the mec1609, sir460 and a capacitor, they were wrong.
I have already tensions VALW +3, +5 VALW, + EVCC, pwrsw # _db, pwrsw, system_vref3.
In the power button I have 5v in mind 3v, is this normal?
The plate still does not start, it does nothing, it could be that I have the wrong bios or will be another failure?
Thanks, I hope not to be heavy.

[robrock1]

Re: Sony VPCSB (MBX-237) dead after bios flash

If the bios is wrong its possible that voltages are not generated so the laptop is dead, if you had an osciloscope you could measure at the bios pin that data is flowing.

[dspok]

Re: Sony VPCSB (MBX-237) dead after bios flash

can you please attach bios file.
i badly need it.

thanks in advance.

[hifihifi]

Re: Sony VPCSB (MBX-237) dead after bios flash

Try to reprogram this modded BIOS again.
There's no power-on secuence on the schematic, so it's difficult to follow voltages.

Can you share this BIOS file?

[orientalsniper]

Re: Sony VPCSB (MBX-237) dead after bios flash

Sorry I don't, I didn't have a programmer before. What I did was to download the original BIOS from Sony using the model number (VPC**** or PCG****).

[orientalsniper]

Re: Sony VPCSB (MBX-237) dead after bios flash

Try this maybe: http://translate.google.com/translat...121GL-%284M%29

[hifihifi]

Re: Sony VPCSB (MBX-237) dead after bios flash

it was not bios, it worked, and know it doesn't work anymore, bad contact in flex cable between mobo and powerboard?

[osama31]

Re: Sony VPCSB (MBX-237) dead after bios flash

I don't know, I can't see which connectors they are.

Yes, if you saw a flash or a blink, probably you made a short-circuit and burnt the SN0608098RHBR. you should change it.
Pin 7 is located near PC205, the one in the green rectangle.
Always check voltages in components connected to pins, not in the pin, it is safe.

hi
How did you know the name of the item PC205, which is not located on the main board
THANKS

[Francisco.s]

Re: Sony VPCSB (MBX-237) dead after bios flash

hi
How did you know the name of the item PC205, which is not located on the main board
THANKS

It is connected to pin 7 of PU121 (SN0608098RHBR) (page 62, MBX-237 Ver030)

[Learn2Day]

Re: Sony VPCSB (MBX-237) dead after bios flash

Hi,

I'm also trying to repair a Sony VPCSB in my own thread, and I noticed you people are also missing CNX-458 schematics.

Big thanks to atsio, who shared this with me.

Njoy!

[osama31]

Re: Sony VPCSB (MBX-237) dead after bios flash

It is connected to pin 7 of PU121 (SN0608098RHBR) (page 62, MBX-237 Ver030)

very thanks
but i need to know the names of the items on the mother board or how did you know it .
I am very sorry for my many questions

[blessedsan]

Re: Sony VPCSB (MBX-237) dead after bios flash

I get a sony MBX-237 motherboard from http://www.buymotherboard.net/sony-m...ard-p-957.html, but i don't know how to assemble it, anyone can help please. URGENT!!!!!!!!!

[trebo]

Re: Sony VPCSB (MBX-237) dead after bios flash

watch this youtube video, http://www.youtube.com/watch?v=IHmxg7VIx3Y
its not a easy one for a beginner, take extra care with ribbons, they are easily damaged, just go slowly, you will get there in the end
another that may help, http://www.youtube.com/watch?v=HbxFq-m6t40
and another, http://www.youtube.com/watch?v=mMfAzXeHaGU
there is plenty more on there

[orientalsniper]

Re: Sony VPCSB (MBX-237) dead after bios flash

Hi,

I'm also trying to repair a Sony VPCSB in my own thread, and I noticed you people are also missing CNX-458 schematics.

Big thanks to atsio, who shared this with me.

Njoy!

Thank you! I fixed mine thanks to your schematic, the power IC wasn't receiving any power in pin 6 (VIN) so I checked the power board and a fuse was open, I replaced it with a 0 ohm resistor and it works now.