SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

[degutji]

Hi All...

Here is my story....

SONY VAIO VPCCA15FG
M/B : MBX-239 ( See attachment )
Bios : See Attachment

Test power on with lcd only and MB + Heatsink Fan ( no hdd etc ) DOS mode only, it will shutdown randomly at 1 or 2 minutes, it can power up again just for 1 or 2 minutes, just like that. HM65 Chips and PL16 get hot when we touch it's about 45'C measure with my DMM.

1. Change PL16... Done
2. Reball HM65... Done
3. Change CPU... Done

Any suggestion on this case ? I don't have shematic or couldn't find till now and bios dump file too. I've attach original bios with pic of MB

Best Regards

[techman1025]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

Here is a different bios to test with ....if works i will fix me region meaning put a clean un used one. If still does the same thing see what voltage is falling out .... most likely core voltage .. alwon 3/5 should be present with just adapter plug in and not pressing power button..test point big square coils they should be the only one's with power with just adapter in. nexted CLK circuit 32.768 at crystal ? you could always check resistance in both circuit with no power to board and set meter to diode mode red probe on ground and black on +line .. also could be crack heat pipe ...have you tried one stick of memory in each slot one at a time? if one socket is bad just double up on good one. hope this helps
techman1025
Techman1025

[degutji]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

Here is a different bios to test with ....if works i will fix me region meaning put a clean un used one. If still does the same thing see what voltage is falling out .... most likely core voltage .. alwon 3/5 should be present with just adapter plug in and not pressing power button..test point big square coils they should be the only one's with power with just adapter in.
Techman1025

Thk's for your respond Techman..
Flashing bios with your file still does same, alwon 3/5 present for 20 seconds and missing alias no 3/5 after that ( but I still can power on even 3/5v missing on that coils ), here is I attach measurement on each coil

Regards

[techman1025]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

Hi
Ok what i need to know with just adapter in don't press power button. is the 3/5 stay there? it don't turn off ? also clk signal there 32.768 ? did you try a different power adapter maybe your's can't handle load? you could also check this by putting a dc 24V bus bulb as the load see if it stay's on.
if yes i say no clk single ?. Maybe also I say the SN608098 is dead(RT8206A/B=ISL6237=PM6686=SN0608098)
techman1025

[degutji]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

Hi...Thanks for you replay Techman,

Ok what i need to know with just adapter in don't press power button. is the 3/5 stay there? it don't turn off ?
Stay there for 20nd's

also clk signal there 32.768 ?
Dunno how to test it but I do have Frequency Counter

did you try a different power adapter maybe your's can't handle load? you could also check this by putting a dc 24V bus bulb as the load see if it stay's on.
Use a Workbench PSU 5A ( with charger still does same )

if yes i say no clk single ?. Maybe also I say the SN608098 is dead(RT8206A/B=ISL6237=PM6686=SN0608098)
techman1025
I'll give it tray that and let you know soon


Regards

[degutji]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

[ktmmotocross]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

"but I still can power on even 3/5v missing on that coils"

thats not possible.

[degutji]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

"but I still can power on even 3/5v missing on that coils"

thats not possible.

it happen on sony vaio I've normal sony vaio missing 3/5 after 20 sec but u can still power on without problem

[degutji]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

Finally Done !!

[meritosari]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

problem solved bro?

[storexxm]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

Finally Done !!

i think for other users it would be intressting... HOW ?

[degutji]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

i think for other users it would be intressting... HOW ?

problem solved bro?

Just put everything back and give it back to customer while saying this " Sorry can't help you, I give up " ( this sony have been 1 month in my table )

[mahmoud2561]

Re: SONY VAIO VPCCA15FG Shutdown randomly in 1 or 2 minutes..

hi how u could flash bios?
thanks