CK = CM replacement? - Badcaps

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salawayon

Badcaps Veteran

Join Date: Nov 2012

Posts: 568

Country: philippines
#1

CK = CM replacement?

09-01-2013, 06:38 PM

i have this dell laptop with this CK = CM chip getting hot, and i want know what is the replacement ic for this one? and how can i know by its code (top mark) that this ic is the same with other ic? just like CK = DK is same with RT5205 and TPS 51125....

thanks...
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Momad

Member

Join Date: May 2013

Posts: 24

Country: ITALY
#2

09-01-2013, 11:05 PM

Re: CK = CM replacement?

Hi! Write your Model No. of the Laptop.
First search the schematics of the Motherboard (MOBO) of your Laptop with the code number of (MOBO), usually found under the sheet of protection under the Ram socket or other area on superface of Mobo, frome the schematics and after you identific the IC Model, type, Function. Search the Datasheet of your IC, look for model, type(Function), how many Pins and configuratione connectionand. If you not found the same IC, now you can searche anather IC with all these Informations.
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spidey

climbs

Join Date: Dec 2012

Posts: 644

Country: Cyprus
#3

09-02-2013, 12:41 AM

Re: CK = CM replacement?

Rt8205bgqw
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salawayon

Badcaps Veteran

Join Date: Nov 2012

Posts: 568

Country: philippines
#4

09-02-2013, 05:49 AM

Re: CK = CM replacement?

Thanks spidey. How about if i want to replace it with TI chip? Does TI got a replacement for this?
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masud

Badcaps Veteran

Join Date: Jul 2011

Posts: 317

Country: Bangladesh
#5

09-02-2013, 06:02 AM

Re: CK = CM replacement?

DT=CC stands for ??
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spidey

climbs

Join Date: Dec 2012

Posts: 644

Country: Cyprus
#6

09-02-2013, 06:21 AM

Re: CK = CM replacement?

Originally posted by salawayon

Thanks spidey. How about if i want to replace it with TI chip? Does TI got a replacement for this?

You must check from the schematics about pin 18. if it is N/C you can safely use TPS51125.
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salawayon

Badcaps Veteran

Join Date: Nov 2012

Posts: 568

Country: philippines
#7

09-07-2013, 05:25 AM

Re: CK = CM replacement?

Thanks. Btw, it's dell inspiron N4030... Do you have schematics? I can't find rt8205b on my junk boards.... And pin18 somewhat is in use because it has a resistance reading when Chip is removed....
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salawayon

Badcaps Veteran

Join Date: Nov 2012

Posts: 568

Country: philippines
#8

09-07-2013, 05:40 AM

Re: CK = CM replacement?

Sorry, i've measured pin24. At pin18 there's a small caps connected and no resistance reading with respect to ground....
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lezsimply

The Wanderer

Join Date: Jan 2013

Posts: 645

Country: Philippines
#9

03-07-2014, 10:50 PM

Re: CK = CM replacement?

@ salawayon

I'm having same issue, TPS51125 is getting very hot. Have you succeeded in replacing this regulator? Thanks
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Momad

Member

Join Date: May 2013

Posts: 24

Country: ITALY
#10

03-15-2014, 05:02 AM

Re: CK = CM replacement?

Where you found, DT=CC stands for ??
At the schematics o IC marked?
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khaahk

Badcaps Veteran

Join Date: Dec 2013

Posts: 760

Country: Estonia
#11

03-15-2014, 05:32 AM

Re: CK = CM replacement?

here
Attached Files

Richtek_Marking_Code.PDF (447.7 KB, 497 views)
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sanehdeep2012

Senior Member

Join Date: Oct 2013

Posts: 139

Country: india
#12

05-13-2014, 04:38 AM

Re: CK = CM replacement?

Originally posted by khaahk

here

thanks for your info this will help me lot

thanks again
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