hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

[alas3376]

I'm working on hp probook 4720s . I need your help for these codes of IC: cj=cl and cp=ck

Line1: CK=DC
Line2: H1Q
Line3: .

The third line is obviously a "pin 1" indicator. Plugging the codes into Google gives me nothing useful and I have never come across this chip before.

Anybody know what this little guy is?

[alas3376]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

hello guys!!! i'm waiting for ur answer. anybody know how to read these ic:
cj=cl and cp=ck???
thank u

[highpulse]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

mate , give us board model , for we can reach schematic , and near this CJ_CL CP:CK , there are maybe some ID , like U20 for ex..
so please give us board model , is writen on the board itself . and also wich is the ID related to each of does components...
meanwhile this ID on the chip represent regulators , but for we can be more precise in helping you out , give the the info i requested

[alas3376]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

Thank u for answer. here is : S_Intel M/B H9265-4

[Th3_uN1Qu3]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

Those are Richtek PWM IC markings. I know i had the PDF with the complete codes somewhere around here... I'll be back with more info.

Edit: CJ= is the product code for RT8205AGQW and the other two letters are the date of manufacture.
CP= is RT8207GQW.

Here is the list: https://cdn.badcaps-static.com/pdfs/...0c114d947f.pdf

[highpulse]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

thk th3_uniqu# , it will come in handy

[alas3376]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

thnx th3_uniqu#. very useful . thnx u very much

[highpulse]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

ine1: CK=DC
Line2: H1Q
Line3: .

your info is bit fuzy

when u mean lines u mean about pinout of the followig IC ? right ?

[alas3376]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

i got satisfaction with th3_uniqu# answer. I thnx u very much

[dellxps15]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

do they blow after replace them ?

if not , they blowned just once , try replace them

if yes, remove them and see if short is in VIN or in the output capacitors rail.

[dj_ricoh]

Re: hp probook 4720s not powering up. CJ=CL and CP=CK chips burning

yeee
I went today to the shop and I had to do the same but it was critical like it burn my finger(that mother^%$£") nvm sry and in order to fix it fast I did not have any time to do it properly I found out the short was for battery line.

if you don't know what side is F*** up and if your lucky like me with bat line cut it off and put a new charging chip.

the client was happy it was running on AC only and was surprise it was done in 50 min.

and ofc the charging port change and new thermal compound.



"I won`t forget you Samsung R60 for burning my finger; I won`t"