ASUS X510U (MB X510UNR Rev: 3.0) not display at all

[mferna14]

Hi all, I am working on an ASUS X510U with not display at all, motherboard X510UNR Rev: 3.0. The problem it came was that liquid spil on the keyboard only. I removed the motherboard & it was clean as ever. No spillage or corrosion on the MB. I am getting all the voltages 19V/3.3V/5V, +VCCCORE (0.8V) +VCCGT, Memory Voltages (1.2V) but still no display.. I can see it running in the background, in the start the LEDs in the display light up so there is 19v on the LCD backlight. I updated the BIOS first & then replaced with a known good LCD Screen, still the same, no image on external HDMI display too. LCD lid IC seems to be ok by using an external magnet. No Shorts of any kind. What will be the problem??? I a really curious what am I doing wrong or what did I not check, any help will be greatly appreciated. Thanks in advance.

[mcplslg123]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

With Asus, Always check powergood signals and you will find one of them not coming up.

[mferna14]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

Thanks "mcplslg123"., do you know from which chip will the Powergood signal be generated or should I check this signal on any chip??? Schematic is not available so I have to trace it down this signal from the Boardview.

[mcplslg123]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

Powergood is shown in boardview. Just follow it.

[mferna14]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

"mcplslg123", I checked ALL_SYSTEM_PWRGD & PWRGD points on the motherboard & they all are fine & give out 3.2V. The CPU is operating well. I see the amp meter, its takes around .40 ~ .20 amps up & down. CPU get hot too & then the CPU fan runs to automatically when hot. What can be the problem??? now it become like a challenge to me. Any more tips will be greatly appreciated. Anything to check on the display connector to see what signal/voltage is missing??? Thanks

[mcplslg123]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

Link boardview if available. Check LPC bus/PCI CLK if you have DSO(With DMM not possible). Did you flashed bios with asus bios update?? If not then post your bios backup here so that it can be rebuild with asus update(if you dont know how to rebiuild it)

[mferna14]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

Thank you so very much "mcplslg123"., great help!!! Ok, attached is the ORIGINAL BIOS de-soldered BIOS Chip from the motherboard & the other attachment is of the Exact Boardview for this motherboard. Any tips will be greatly appreciated. Thanks

[SMDFlea]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

Thank you so very much "mcplslg123"., great help!!! Ok, attached is the ORIGINAL BIOS de-soldered BIOS Chip from the motherboard & the other attachment is of the Exact Boardview for this motherboard. Any tips will be greatly appreciated. Thanks

Bios moved to "Bios Requests ONLY!" section https://www.badcaps.net/forum/showthread.php?p=1064984

[mcplslg123]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

@mferna14, try the bios rebuilded in bios section and give feedback.

[mferna14]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

Thank you so much., I got the file. I will re-program it & inform you.

[mferna14]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

mcplslg123 with this BIOS update "https://www.badcaps.net/forum/showthread.php?p=1064984" the motherboard turns on, I can see the Keyboard Power LED lit, but the amps on the amp meter is stuck to 0.03, no movement at all & CPU is cold., With my previous BIOS file it would take around .40 ~ .20 amps up & down fluctating & the CPU gets warm & then fan turns on. I think that the re-build BIOS is not updated well.

[mcplslg123]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

Yes, seems like there is issue with bios. Give feedback in bios section.

[mferna14]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

I have post the photos, they require,, pls. check., Thanks

[mferna14]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

Hi "mcplslg123"., Now i know I got the correct BIOS, as I see all running in the background. The initial startup process & then ASUS going into BIOS setup mode when no OS/SSD present. CPU gettting hot like normal, amp meter show fluctuating between .34 ~ .40 amp. But I DO NOT get any display. I put in a know good LCD Screen with LVDS Cable, replaced RTC battery, checked all voltages, & they are present., can you pls. give me some tips as of why I am not getting the display. Your help will be greatly appreciated. Thanks

[mcplslg123]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

YOU mean you are getting display and it goes to bios setup when no HDD/SSD is connected??

[fauzanmint]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

check +3V_EDP on LVDS socket

[Th3_uN1Qu3]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

And also enable and dim... There is a chance that you are getting display but you don't have backlight.

[mferna14]

Re: ASUS X510U (MB X510UNR Rev: 3.0) not display at all

Thanks for you replies... 1st answer to "mcplslg123", no display at all, I am just assuming that all is working in the background with my repairing experience of these ASUS motherboard. Still NO DISPLAY at all. 2nd "fauzanmint" I checked +3V_EDP on the LVDS socket, & 100% there.. no problems with this voltage. 3rd "Th3_uN1Qu3", I am surely getting 19v of backlight & I replaced it with another good LCD screen. & I even notice backlight comes up but still no image. I would appreciate if any more tips. Thanks all.

[brother john]

SAME SAME SIR WHAT CHECK I DO?