How to replace nec/tokin OE128 in laptop motherboard?

[hitmen]

Re: How to replace nec/tokin OE128 in laptop motherboard?

He said there's 10.3v across the caps - if that's in the processor power section something is seriously wrong.

Honestly I would just ditch the board at this point.

U means, anyone couldn't repaire it now???
U means, i would foam it???

[hitmen]

Re: How to replace nec/tokin OE128 in laptop motherboard?

you just use 4 pcs of 330d (Not 330e or 330g or others). Must Work if there is only token problem.

I already checked but 2 of 330d already putted of the co, when i putt 4 more they become 6 of 330d, there is any harm???

[rievax_60]

Re: How to replace nec/tokin OE128 in laptop motherboard?

U means, anyone couldn't repaire it now???
U means, i would foam it???

You should normally measure voltages With Respect To ground.

[selldoor]

Re: How to replace nec/tokin OE128 in laptop motherboard?

Then i putt battery and place positive line of multimeter on positive of battery and negative line place on different places of PCB of motherboard. I find, current is vary on most places but where was nec tokin there current is same means if battery current is 10.31v, it show 10.31 on both sides( and -) of the capacitors, capacitors, which are putted in the place of nec tokin.

.

RIEVAX_60 has got something there - in the above it appears you are just
measuring the battery voltage. You will get 10.31vdc wherever you put the
meter black lead on ground.

[hitmen]

Re: How to replace nec/tokin OE128 in laptop motherboard?

friends!!! What i do now?????

[altcoms]

Re: How to replace nec/tokin OE128 in laptop motherboard?

thanks a lot ....

[altcoms]

Re: How to replace nec/tokin OE128 in laptop motherboard?

can i use not smd capasitor ?

[rievax_60]

Re: How to replace nec/tokin OE128 in laptop motherboard?

can i use not smd capasitor ?

Yes, it is unlikely to work.

[hitmen]

Re: How to replace nec/tokin OE128 in laptop motherboard?

Once again I opened the laptop and remove all caps including 2 already putted 330d caps and clean it by petrol.


Then i put 6 caps of 330d including 2 which are already putted near nec tokin by co.


And I fitt alll its thing but When i press pwr on button it show same problem means indicators light up for 1/6 second and off immediately.

What is the problem could ????
Please guess??

Thanks in advance.

[spidey]

Re: How to replace nec/tokin OE128 in laptop motherboard?

you may have another problem on the board. It looks, it is a clear Nec/tocin replacement.

[rievax_60]

Re: How to replace nec/tokin OE128 in laptop motherboard?

Once again I opened the laptop and remove all caps including 2 already putted 330d caps and clean it by petrol.
Then i put 6 caps of 330d including 2 which are already putted near nec tokin by co.

And I fitt alll its thing but When i press pwr on button it show same problem means indicators light up for 1/6 second and off immediately.

What is the problem could ????
Please guess??

Thanks in advance.

Are the two outer strips under the NEC/TOKIN connected in the PCB?

[rievax_60]

Re: How to replace nec/tokin OE128 in laptop motherboard?

I notice there are only a few vias in the copper area on the side with the two current shunt resistors.
I suspect the two sides are not connected.

[masud]

Re: How to replace nec/tokin OE128 in laptop motherboard?

can i use not smd capasitor ?

yes, you can.

[masud]

Re: How to replace nec/tokin OE128 in laptop motherboard?

desholder all the smd capacitors nearby the token and see what happens.

[hitmen]

Re: How to replace nec/tokin OE128 in laptop motherboard?

you may have another problem on the board. It looks, it is a clear Nec/tocin replacement.

Now, what problem could???

[hitmen]

Re: How to replace nec/tokin OE128 in laptop motherboard?

desholder all the smd capacitors nearby the token and see what happens.

I already checked it by removing all the smd caps nearby tokin and i pres pwr button it show same problm, in the absence of caps and in the presence of caps.

[sasser]

Re: How to replace nec/tokin OE128 in laptop motherboard?

Try another capacitor 330uf

[rievax_60]

Re: How to replace nec/tokin OE128 in laptop motherboard?

I already checked it by removing all the smd caps nearby tokin and i pres pwr button it show same problm, in the absence of caps and in the presence of caps.

This might sound like a stupid question. But I need to ask.
Have you ever tried having the four capacitors fitted and short wire links joining the outer strips on the PCB, all at the same time?

[hitmen]

Re: How to replace nec/tokin OE128 in laptop motherboard?

This might sound like a stupid question. But I need to ask.
Have you ever tried having the four capacitors fitted and short wire links joining the outer strips on the PCB, all at the same time?

Yes, but faced same problem. . . .

[rievax_60]

Re: How to replace nec/tokin OE128 in laptop motherboard?

That should have worked. Did you take a picture of that arrangement?