Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

[chrisrer]

hi everyone from greece this forum is great for fixing problems good job keep trying this.

i have this laptop and shutdown's, the work i have make is: clean cpu fan , reset bios (remove battery and soldering again),bios update, i put thermal paste cpu,gpu,etc,

i read for another mainboards to change capacitor nec-tokin but this mainboard haven't this peace near cpu and under from mainboard have 5 capacitors 330mf maybe i change this to fix the problem?

the hd is formatted disk,this laptop haven't battery, I am concerned when i remove the ram from one slot and put it another the latpop not start's but when i put it again to the other slot work's fine with the problem i mention..i 'll try with another ram to test it and the same problem again with slots.maybe the cpu fault with power managment and i say about capacitor's ... when the pc is power on and works fine about 3 minutes when shutdown i was install program for cpu diagnose an says to me the cpu is burning with 45 celcious temparture...i find it something else the output from dc power is 19V and 4,7 A but laptop needs 19V and 6,4A i must check this but the previous user told me tha laptop works fine ... i don't understand.....

here is some photo's from mainboard

[trebo]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

cant get pictures, or is it just me

[chrisrer]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

pictures it's ok to me.

[trebo]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

pictures it's ok to me.

Hello Chrisrer
I am getting a Greek site telling me that I need to log in to see pictures, after using translation

[chrisrer]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

axa....sorry.....maybe the link......i fix it

[chrisrer]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

[QUOTE=chrisrer;294817]hi everyone from greece this forum is great for fixing problems good job keep trying this.

i have this laptop and shutdown's, the work i have make is: clean cpu fan , reset bios (remove battery and soldering again),bios update, i put thermal paste cpu,gpu,etc,

i read for another mainboards to change capacitor nec-tokin but this mainboard haven't this peace near cpu and under from mainboard have 5 capacitors 330mf maybe i change this to fix the problem?

the hd is formatted disk,this laptop haven't battery, I am concerned when i remove the ram from one slot and put it another the latpop not start's but when i put it again to the other slot work's fine with the problem i mention..i 'll try with another ram to test it and the same problem again with slots.maybe the cpu fault with power managment and i say about capacitor's ... when the pc is power on and works fine about 3 minutes when shutdown i was install program for cpu diagnose an says to me the cpu is burning with 45 celcious temparture...i find it something else the output from dc power is 19V and 4,7 A but laptop needs 19V and 6,4A i must check this but the previous user told me tha laptop works fine ... i don't understand.....

here is some photo's from mainboard

[opamp]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

Find the schematic for the motherboard and check voltage and resistance on the ram slot that doesn't work.

[chrisrer]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

and how about cpu temparture and shutdown? i don't know to read schematic im newbie in electronics

[dj_ricoh]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

can you start up in safe mode?

[Lilman]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

I have same problem with this PC... can someone please tell me witch caps we have to change?

thanks

[jtamad44]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

neck tokin behind the cpu if u have.

[Lilman]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

u can see in photos that its not nec tokin...

there are around 15 or 16 smaller caps instead nec tokin

thats why i need help... dont know which ones replace

[spidey]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

on this mb, vcore mosfets are also overheating , use 0,5mm thermal pad between heatsink.

[kikodog]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

anyone solve this? same problem here...

[pmv]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

good, I solved a problem with this card replacing one of the 5 capacitors tantalum processor circuit desoldering all and check the ESR with a checker ESR capacitor.
good luck

[ok1gr]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

chrisrer.. miquel.. did anybody found a solution on this board?

[arielcom]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

test the adaptor connector someone the positive in the middle not adjust properly. adjust it whit a needle and test.
Sorry for bad english.

[Ramee]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

good, I solved a problem with this card replacing one of the 5 capacitors tantalum processor circuit desoldering all and check the ESR with a checker ESR capacitor.
good luck

Hi
What kind of SMD ESR tester do you got, can you post the picture or link where to buy?

[highpulse]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

Well i got the same laptop here , toshiba a200 , with the motherboard la-3481p , it was dusty inside , and my client complained it was shutting down inside , i was hopefully thinking could be the NEC , but th is machines is the one with the small capacitors , i know that some people here have replace some caps and the machine stayed ok , so now im a bit stuck , since i don't have a ESR meter to test all well tested to be sure with would be the fault here .
or anyone have a suggestion for this issue?

cheers

[highpulse]

Re: Toshiba Satellite Pro® A200 ISKAA LA-3481P shutdown where is the problem

alltough works well on battery , just like the bloody nec problem , meanwhile i replaced the 6 tantalum capactiros , as also replaced the vcores fet for news ones , since they were allready with a arsh color .
lets see later on the final test