hp g62 help disable DSC vga

[ala_borbe]

hello fellas

recently i acqouired hp G62-b63eg xf235ea# with no backlight problem (it has backloght untill windows is loaded, then dim)
another lcd did NOT solved the problem, so i did reflow and it worked
its i5 + onboard intel + descrete vga

motherboard foxconn star federer
pn: 01013Y000-575-G
PM_I_HPC_S_MV_MB_V3
BY FOXCONN
E253117

two days ago VGA stopped working again, caps lock blink... since i do not need performance and i do not own rework station, i was wondering could you help me disable discrete ati vga on this motherboard and switch only to intel uma vga and like youve done with that dell

https://www.badcaps.net/forum/showth...ghlight=n50%2A

here is a schematics

any guidance wold be helpfull
this is my personal laptop, not work

[ala_borbe]

Re: hp g62 help disable DSC vga

does anyone have board-view?
tracing components with magnifier is kinda slow... :/

[meritosari]

Re: hp g62 help disable DSC vga

https://www.badcaps.net/forum/showpo...21&postcount=2

link photo HD:
http://rusfolder.com/30340730

the boardview, open it with asus tsic

[highpulse]

Re: hp g62 help disable DSC vga

hey Donald , remove the main mosfet that feed the discrete grafic , like this is will only work with intel grafic card

[ala_borbe]

Re: hp g62 help disable DSC vga

ive done some work, placed some components (pics will come later), flashed bios and laptop came back to life... but i still see ATI DSC vga in device manager... :/

moded bios with unlocked features and menus (it was working before), now does not work, caps lock blinks
i had to restore bios by eeprom tool (not problem for me...)

now comes testing

@highpulse
did not remove mosfet, my solution worked before you post, so... in future i will test your method as well, seems simpler

[dj_ricoh]

Re: hp g62 help disable DSC vga

hey Donald , remove the main mosfet that feed the discrete grafic , like this is will only work with intel grafic card

so you leave the coil there and remove only the FET?

and if they are 2 there?

[highpulse]

Re: hp g62 help disable DSC vga

if you kill the main line , it will disapear and no longer bug you
chek pic

[teknikbursa]

Re: hp g62 help disable DSC vga

ive done some work, placed some components (pics will come later), flashed bios and laptop came back to life... but i still see ATI DSC vga in device manager... :/

moded bios with unlocked features and menus (it was working before), now does not work, caps lock blinks
i had to restore bios by eeprom tool (not problem for me...)

now comes testing

@highpulse
did not remove mosfet, my solution worked before you post, so... in future i will test your method as well, seems simpler

Waiting pics

[ala_borbe]

Re: hp g62 help disable DSC vga

if you kill the main line , it will disapear and no longer bug you
chek pic

tnx for help, yep your solution worked as a charm.. you are true magician, hope i will learn this stuff too.. temps go down as i disabled desc ati, it no longer appears in device manager

its nice to have a toy to play
i managed to upgrade ME frimware and unlock hidden menus in bios... so far so good.... (other moded bios did not work for me cos i dont have second vga, machine did not boot with them so i unlocked it myself )

next i will try to put me7 (insted factory me6) to see will it have any advantages or will it work at all

i will post results as usual

[rs232killer]

Re: hp g62 help disable DSC vga

wondering if anyone found Acer 5xxx and toshiba l850 c850 ati disable

[rs232killer]

Re: hp g62 help disable DSC vga

----- Samsung RC530 RC530-S02
Remove Nvidia Chip --- works with intel HD

HDMI port disable

[dj_ricoh]

Re: hp g62 help disable DSC vga

Can I only take the coil out?

Or I need to take fets out instead of coil?

[ala_borbe]

Re: hp g62 help disable DSC vga

if we are talking about this hp only remove PU320

[highpulse]

Re: hp g62 help disable DSC vga

dj ricoh i was wrong , not the fet , you must remove DGPU output ic , usually pu320


donald im happy i helped you out , you helped me a lot as well my friend

thk in advance

[highpulse]

Re: hp g62 help disable DSC vga

well anyone have this boardview , having big issues with a bloody white screen .
so if someone can share this boardview i apreciate it

thk in advance

[highpulse]

Re: hp g62 help disable DSC vga

well this , one its a bitch ..
machine was giving image after a short grafic reflow , my coworker replaced chip and he noticed that machine started to give white screen only .. so we have removed pu320 to disable discrete , but STILL SAME with ibtel grafic .
So therefor we tought some problems with mux or cpu or pch , possible problem , before replaced does cheked pin 40 39 38 , -19 volts ok pins 1 and 2 vccLCd 3.3 , +3.3vs as well present , so all voltafges are present on the lvds connecctor.

so replaced both mux , same issue white screen , replaced cpu and ram , same issue . replaced pch same issue . replaced screen assembly same issue ... got always white screen .

cheked bios , same issue ... even replaced the amount of transistor from Backlight to lcd enable all the 13 transistors were relaced just in case , even the good ones that i tested. stlll same issue .
so it only can be a signal issue .. but who send the signal to LVDS is pch among with the mux ..and both replaced and still same issue !!!!!
really dont know what else to go !! if someone have an idea that want to share , im all hears !

[highpulse]

Re: hp g62 help disable DSC vga

well thats what i call bad luck after all , if you remember i mentioned i had replaced screen assembly 2 times , but after all both assemblys were wth dmaged panels .....

somethimes the fix is just there ,but we trust to much in stupid basic instincts , ehhe
fixed

[ala_borbe]

Re: hp g62 help disable DSC vga

to fully convert form DSC to UMA either remove PU320 or disconnect PJ19

then switch resistors like in pic

RI53 RI56 and RI51 RI55. -> SKU ID UMA


works 100%

sometimes you need to reflash bios after conversion

[highpulse]

Re: hp g62 help disable DSC vga

hehe nice , thk anyway mate

[abbas_govani]

Re: hp g62 help disable DSC vga

hey guys can this work on da0ax1mb6h1 board this is hp62-361tx.
there is no pu320. i had locates ic but not sure for that am sharing the photo below. in this board i think that ic is pu11. and m also not having schemantic. too