Toshiba Satellite A300 keep rebooting itself ?

[bianchi77]

Dear Badcaps Members,
I have Toshiba Satellite A300 keep rebooting itself.
What 's wrong with it ?
It's on, I can access BIOS, but by the time inside OS, it's rebooting,
Could it be a bad caps ?

Thanks

[Romy2018]

Re: Toshiba Satellite A300 keep rebooting itself ?

if there is nec token caps replaced it

[bianchi77]

Re: Toshiba Satellite A300 keep rebooting itself ?

if there is nec token caps replaced it

now it's completely off after I plug out and plug back in the battery....
Any clues ?
Thanks

[piernov]

Re: Toshiba Satellite A300 keep rebooting itself ?

Yeah this one should have a NEC Tokin under the CPU so it may need to be replaced.

[bianchi77]

Re: Toshiba Satellite A300 keep rebooting itself ?

Yeah this one should have a NEC Tokin under the CPU so it may need to be replaced.

What do you suggest me for replacing it ? thanks

[Romy2018]

Re: Toshiba Satellite A300 keep rebooting itself ?

just replaced with 330uf 4 or 5 tantalum caps

[stj]

Re: Toshiba Satellite A300 keep rebooting itself ?

not tantalum, polymer.

[piernov]

Re: Toshiba Satellite A300 keep rebooting itself ?

Aluminum polymer I guess you mean?

[bianchi77]

Re: Toshiba Satellite A300 keep rebooting itself ?

just replaced with 330uf 4 or 5 tantalum caps

Now it's completely off,

And I can not turn it back on....
Any clues for hard resetting it ? thanks

[MJ-meo-dmt]

Re: Toshiba Satellite A300 keep rebooting itself ?

I'm also with the others. Remove that NECTOKIN shit under the CPU(underside of the MB) And put 4 330uF Aluminum polymer Caps in its place.

What it usually looks like SEE HERE

What it should look like after the fix, SEE HERE

Good luck

[bianchi77]

Re: Toshiba Satellite A300 keep rebooting itself ?

I'm also with the others. Remove that NECTOKIN shit under the CPU(underside of the MB) And put 4 330uF Aluminum polymer Caps in its place.

What it usually looks like SEE HERE

What it should look like after the fix, SEE HERE

Good luck

Now it can not start at all, before it can boot, but turn on and off,
is it only because capacitors ?

Thanks

[bianchi77]

Re: Toshiba Satellite A300 keep rebooting itself ?

what's the size of that tantalum 330uF ? what rating ? 3V ?

[bianchi77]

Re: Toshiba Satellite A300 keep rebooting itself ?

that one is good ?
https://www.aliexpress.com/item/10PC...b-8e8d22f8bafd

[bianchi77]

Re: Toshiba Satellite A300 keep rebooting itself ?

What's the size of that capacitor ? 7343 ?

[MJ-meo-dmt]

Re: Toshiba Satellite A300 keep rebooting itself ?

Look at the links i gave you... they contain visual info of the caps... they are 330uF Capacitance and Voltage should be more than 3V at least. CPU are 0.8 - 1.4V usually depending on make.... any scrap or spare board will have them on. if you dont have 330uf then just do the math and add whatever you have to make that up...

Here is another image

[ktmmotocross]

Re: Toshiba Satellite A300 keep rebooting itself ?

that is not for NEC TOKIN if he cannot start it

[ktmmotocross]

Re: Toshiba Satellite A300 keep rebooting itself ?

dont u have ATI northbridge?

[bianchi77]

Re: Toshiba Satellite A300 keep rebooting itself ?

I'm thinking using this :
https://www.aliexpress.com/item/10PC...30453c00slVmjS

How do you guys reckon ?

[mcplslg123]

Re: Toshiba Satellite A300 keep rebooting itself ?

Why buy for these caps. You can easily get them from scrap mb

[bianchi77]

Re: Toshiba Satellite A300 keep rebooting itself ?

I can not find any on my scrapped mb