How to replace nec/tokin OE128 in laptop motherboard?

[hitmen]

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

plz indicat wich caps i can use frm abov pics?

[hitmen]

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

can i use anyone like these? Please indicat.

[jtamad44]

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

use the one from Bestsheng Elecronics.. its has 350uf value with low ESR 0.024.. the other black caps has only 315uf with ESR 0.025..
put 4x350uf ESR 0.024

[spleenharvester]

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

You want under 10mOhm ESR ideally. Like I said you're best recycling the 4 tantalum caps nearest the CPU on a dead board, they serve exactly the same function. Random caps found elsewhere on the board are almost definitely too high ESR.

[hitmen]

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

use the one from Bestsheng Elecronics.. its has 350uf value with low ESR 0.024.. the other black caps has only 315uf with ESR 0.025..
put 4x350uf ESR 0.024

How u find these charactrs of a caps by seeing its pic, but there is no writen esr and voltage? Im new in electrnics.
Plz detil me.

[jtamad44]

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

you can get it from here..

http://www.aliexpress.com/item/Free-...699744043.html

[hitmen]

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

you can get it from here..

http://www.aliexpress.com/item/Free-...699744043.html

U dont undrstand my question. I say how can we identify esr and v of a caps?

[jtamad44]

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

i got a lcr/esr meter, it tells you the value and esr.

if you are plannin to buy, buy this one with 100 khz frequency..

http://www.amazon.com/Precision-886-.../dp/B0000WTXF6

[hitmen]

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

thnx.

[selldoor]

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

How u find these charactrs of a caps by seeing its pic, but there is no writen esr and voltage? Im new in electrnics.
Plz detil me.

This may be more the answer you want

Ok You posted the picture
if you move the mouse over the image or copy the link from the picture
http://i01.i.aliimg.com/wsphoto/v0/1...pg_200x200.jpg
and paste it into notepad you will see among other things the part number 2R5TPE330M9 and the voltage 2.5v

If you copy the part number and paste it into google the first listed item I get is the electronics retailer digikey.
Click on that and you will see all the details of the item and also a link to a full datasheet for it.
http://www.digikey.com/product-detai...art_dkc_buynow

The second listing on google is Datasheet archive that will take you straight to the datasheet (may take time to download)
http://www.datasheetarchive.com/2R5T...datasheet.html

You can find details of most electronic components if you google the part number followed by datasheet.
Hard part is understanding them

In this case the member who answered you may simply have an understanding of the part numbering as you can see it contains the info 2R5 Must be the voltage TPE is the series 330 is the uf and M9 is the ESR

Actually I thought he may have mis typed when he said 350uf value with low ESR 0.024 as it is clearly labelled 330 but see his esr meter may not be accurate? though 350 may be within tolerance.

[dj_ricoh]

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

i got a lcr/esr meter, it tells you the value and esr.

if you are plannin to buy, buy this one with 100 khz frequency..

http://www.amazon.com/Precision-886-.../dp/B0000WTXF6

omg 835$
you can get a fluke for 250 gbp top of the line

[jtamad44]

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

i'am just kind of shy to recommend my lcr meter, its good but not too good..

yes, this is really high price, but some technician they can afford it, this one is better compare to mine.

[hitmen]

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

I hardly found 6 caps of 220uf and there is written word 'g' near the digits 220. Means, these are of 4vdc. Can i use these caps instead of 4*330uf. If yes, how many caps of 220uf and 4v i use?
I will upload pictures of it.

[hitmen]

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

I hardly found 6 caps of 220uf and there is written word 'g' near the digits 220. Means, these are of 4vdc. Can i use these caps instead of 4*330uf. If yes, how many caps of 220uf and 4v i use?
I upload its picture.

[jtamad44]

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

i think the value of nec 128 is 1200uf, you can put up to 1500uf.

[hitmen]

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

means, i can use 6 caps of 220uf and 4v.? In which order? Plz give me a simple diagram?

[hitmen]

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

plz urgently help me.
I want to fix it today,becoz today i am free.

[hitmen]

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

I hardly found 6 caps of 220uf and there is written word 'g' near the digits 220. Means, these are of 4vdc. Can i use these caps instead of 4*330uf. If yes, how many caps of 220uf and 4v i use?
I upload its picture.

[hitmen]

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

i think the value of nec 128 is 1200uf, you can put up to 1500uf.

means, i can use 6 caps of 220uf and
4v.? In which order? Plz give me a
simple diagram?
Plz urgent.
Thanks.

[innocentforeign]

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

check this

https://www.badcaps.net/forum/showthread.php?t=8991