help HP 4720s dsc to uma convert

[ala_borbe]

hello guys

can you help me
i have 2x HP4720s with H9265-4 48.4gk06.041
one spins fan but no image, no reaction to caps lock
other starts and respods to caps lock or restart with ctrl+alt+del but no backlight and no image on screen

one has i5 other i3 first gen with uma vga

i have reballing machine and i know that problem is ati chip but can you help me to convert it to uma, cos it will last longer then reball?

i tried on page 46 signal GFX_SEL to change resistors from R498 to R497 but it all remains the same

any help please... at least to push me in right direction

[MOD EDIT] Link to Schematic -> https://www.badcaps.net/forum/troubl...v-sd-schematic

[caspian]

Re: help HP 4720s dsc to uma convert

only the second laptop seems to have graphics problem.

[imranromi]

Re: help HP 4720s dsc to uma convert

I try 4530s and 4540s only remove graphic supply convert uma try this laptop maybe work.

[khaahk]

Re: help HP 4720s dsc to uma convert

I think you need to check every part of schematic where DIS to UMA marked bold green. Meaning removing for example RN35 and installing it to RN31, R375 to R374 position and so on. Thats a lot of work to do.

[mcplslg123]

Re: help HP 4720s dsc to uma convert

I try 4530s and 4540s only remove graphic supply convert uma try this laptop maybe work.

NO . For 4520s it doesnt work by removing gfx coil. I have never found any info regarding conversion for this model-might be -not possible to remake in uma.

[ala_borbe]

Re: help HP 4720s dsc to uma convert

i allready tried removing L44 but it did not work, after that it would turn on but no reaction to caps lock, no image
i will take closer look to componenets marked UMA to check are thay there

[Francisco.s]

Re: help HP 4720s dsc to uma convert

NO . For 4520s it doesnt work by removing gfx coil. I have never found any info regarding conversion for this model-might be -not possible to remake in uma.

I agree, this motherboard seems not to have a pch strap to switch to uma mode, like BOARD_ID0 (R836 & R837) as in quanta R23 or other capable mobos.

[Stantechs]

Re: help HP 4720s dsc to uma convert

I don't agree with you, on page 46 it has its "gfx sel", switch from dis to uma

[stefanbs]

Re: help HP 4720s dsc to uma convert

I confirm the successful conversion to UMA or HP 4520s (Wistron-S 48.4GK06.041).
There are a bunch of components that have to be aded\moved\removed acording to the schematics. Firmware also has to be flashed with the UMA version, ATI and Intel graphics has different BIOS files on HP site. Unless the firmware is correct, there is no picture on LCD after conversion to UMA, only backlight.

[abdulhalim933]

Re: help HP 4720s dsc to uma convert

great
can you post convert info
thankyou

[Jamescl]

Re: help HP 4720s dsc to uma convert

Thans a lot

[datodati962@gmail.com]

Re: help HP 4720s dsc to uma convert

Please can you send conversation for 4520s,need to enable Uma,if you have schematic to make conversation please forward,thakns

[mci]

Re: help HP 4720s dsc to uma convert

Hi,

Was anybody able to perform the conversion?
This is what I found so far but didn't test them.




Thanks

[mci]

Re: help HP 4720s dsc to uma convert

Hi,

Was anybody able to perform the conversion?
This is what I found so far but didn't test them.

Thanks

+Files

[mohamedbalwe]

Re: help HP 4720s dsc to uma convert

follower

[mohamedbalwe]

Re: help HP 4720s dsc to uma convert

+Files

Thanks for help
Did you check it out?

[mci]

Re: help HP 4720s dsc to uma convert

Thanks for help
Did you check it out?

So far no, there are a few instructions that I am unclear of
- Add (what?)
- Shift (where?)
- Add coil (what value?)

[Rainbow]

Re: help HP 4720s dsc to uma convert

Anyone had success with the images posted above?
I've compared them to the schematic and they are missing some parts:
- move RN37 to RN23
- move R375 to R374
- move R498 to R497

The discrete board is also missing U33 (PS8101) so there will be no HDMI output unless this chip is added.

However, the most important missing part is entire VCC_GFXCORE supply on page 55. How is this mod supposed to work without VCC_GFXCORE for CPU?

[btomce]

Re: help HP 4720s dsc to uma convert

Connect wire cpuGFXCORE from ati core power supply.

[relmas1]

please translate this video

https://www.aparat.com/v/J3Yyp