hey guys need l755 toshiba schematic

[highpulse]

Hey guys , got here a toshiba l755 dam have some components damaged , the board number and rev are the following.

BS_R/TK_R Main board
REV : 2.1

PN 08n1-0na1j00

need this , i see mosfets blow on the 3.3 and 5 volts line but also the main regulator .. for what i know is a richtek since its name is JD=GD

cheking the richtek list thata th3_uniqu3 shared on the forum . is a bit confused , since they are several possibilities for the richtek controler .. so if anyone can help in advance wit the schematic would be nice.

[highpulse]

Re: hey guys need l755 toshiba schematic

no one O.o ?

[p1muserfan]

Re: hey guys need l755 toshiba schematic

Welcome to my hell, have a similar board BS AS Rev 2.1 p/n 08n1-0n93j00. Mine is also marked as a Hannstar MV-4 94V-O. Can't even come close to finding a print. Very few markings on the board too

[hansie55]

Re: hey guys need l755 toshiba schematic

Maybe this one is of use?

[highpulse]

Re: hey guys need l755 toshiba schematic

not even close , and its a intel board with discrete gpu .

but thk anyway mate

[ala_borbe]

Re: hey guys need l755 toshiba schematic

try this one, its UMA but closer than other

i keep digging for other

[ala_borbe]

Re: hey guys need l755 toshiba schematic

end more, maybe they help

[highpulse]

Re: hey guys need l755 toshiba schematic

nop none of does works , mine have a main regulator of 20 pins
JD=DG (thats mi still trying to understand wich richtek is it on the richtek list

[highpulse]

Re: hey guys need l755 toshiba schematic

but thk for the schematics

btw the regulator is a RT8239C must get one or a similar

[ala_borbe]

Re: hey guys need l755 toshiba schematic

from all i see, this should be BLBD mother board

can you see for any other markings, and maybe you could post bios dump, may be useful in identifying motherboard

gl

maybe this could be it?
http://www.yifix.com/thread-3275-1-1.html

[highpulse]

Re: hey guys need l755 toshiba schematic

monday , once i arrive to the lab i will give more info about this motherboard , and main principal components.

[atsio]

Re: hey guys need l755 toshiba schematic

That's a Pegatron BS_R/TK_R. There is not a schematic available yet.

[highpulse]

Re: hey guys need l755 toshiba schematic

shitttt :S well at least if someone help me out , figuring wich richtek is the main regulator is all what i need for i can start the fix , since after lifting the mosfets , i notice no shsort on coils ,. and only the 2 mosfets are burned and the main regulator, the richtek is a JD=DG

[Ramee]

Re: hey guys need l755 toshiba schematic

JD=DG=RT8239 is the Main Power Supply Controller that gives 2v to 5.5v output voltage.
Like LDO3 and LDO5.

[highpulse]

Re: hey guys need l755 toshiba schematic

ramee that i know is the main reg ehehh i just wanted to know wich is the exact richtek since on the richtek list it gives me a few options .. and like this it becomes fucked up to know wich one to use. thk for the tip mate , btw wich code you use from the full code on the chip to know wich richtek is the right one ?

[highpulse]

Re: hey guys need l755 toshiba schematic

not even showing up on the richtek list this RT8239

[highpulse]

Re: hey guys need l755 toshiba schematic

RT8239 is usualy for JC not JD .

but google is saying the same . well will try orderig or find out a compatible

btw it must be RT8239C for the JD code

[Ramee]

Re: hey guys need l755 toshiba schematic

RT8239A, B or C has the same function.

I could not find the site where i found it;(

[highpulse]

Re: hey guys need l755 toshiba schematic

well its bit different on the pin 13 , meanwhile al the outher function , EN and ldos and Pgood are in same position

[spidey]

Re: hey guys need l755 toshiba schematic

richtek marking codes :