Solved! I need help about Notebook Motherboard Repair

[hal0000]

Hi,

I have Asus ROG G751JT G-Sync Edition.

Some Capacitors and screen edp connector is burned / dead probably i wanna buy them just in case.

I will search for repair guy for this but i wanna bring materials with me can you guys help me with that ? can you find same capacitor, or same quality or better one.

I have Pictures for Capacitor

And can you guys help me find the datasheet for this laptop for find shortout and knowledge of voltages.

 

[jarotech]

Hi, for the schematics, they are not available, the area under the eDP port, what about? For the capacitors, they are from Matsuki, 27μF 25V.

 

[hal0000]

Hi, for the schematics, they are not available, the area under the eDP port, what about? For the capacitors, they are from Matsuki, 27μF 25V.

can you visit this link for the full story ? NotebookReview
and about capasitor i don't think i can find them in my country can you give alternate brand or can i use capacitor have this specs 27μF 25V. ?

 

[jarotech]

Why do you want to change those capacitors?

 

[hal0000]

Why do you want to change those capacitors?

I think i burnt them but i will check and maybe ask for new help and will share new burnt motherboard pic

 

[jarotech]

If the backlight does not work, you may have blown an inductor when you connected the display cable with power.

 

[hal0000]

If the backlight does not work, you may have blown an inductor when you connected the display cable with power.

I will go to repair shop but i don't trust about his brands so i will try to buy originals can i use diffrent brand for capacitor ? with same specs(27μF 25V.) what should i google about that ? just "27μF 25V. capacitor" ?
and is this SMD ? Radial ? solid ? Matsuki, 27μF 25V. no longer avaible what should i buy ?

 

[jarotech]

My question is what is the problem with your laptop?

 

[hal0000]

My question is what is the problem with your laptop?

Screen was not working after disassemble, but only screen was problem i others was good cpu, gpu, ram etc. It was a weekend so i can't send to service so i played games, saved projects and backup my hdd, ssd after play 2 day with HDMI. I sent my laptop to Asus Service and they told me your laptop don't working not even a signal for life, i was like whaaaat ? my laptop was working just yesterday and they offer me 3800TRY for motherboard replacement so i decline it (i purchased my laptop in USA 2015 for 3600 TRY). I'm waiting to UPS to arrive my laptop so i can test maybe service did something for motherboard replacement (in third world country like Turkey everything is possible) or just ignore me if my laptop working well exept screen, so i will open and find the problem and edit the topic with pics.

Edit: I can't find any capasitor with this specs. (27μF 25V.)

 

[jarotech]

If I understand you correctly, your laptop works well with an external HDMI monitor, but you have nothing on the screen of the laptop.

 

[hal0000]

If I understand you correctly, your laptop works well with an external HDMI monitor, but you have nothing on the screen of the laptop.

Yes, and are you sure about that ? 27μF 25V i can't find capacitor with this specs

 

[jarotech]

The problem you have is an inductor that is open (defective), the capacitors have nothing to do with the lack of the backlight.

 

[hal0000]

The problem you have is an inductor that is open (defective), the capacitors have nothing to do with the lack of the backlight.

Inductor meaning like 3A Ferrite Bead ?
Thx for helping man when i get my laptop i will disassembly and will find the shortout i think i can see with eye.
i will reply to you okey ? can you help me again ?

 

[jarotech]

Sometimes it will be easy to find when the inductor is faulty, the other time not so obvious. With a multimeter, it's easy to know where to look, I'll wait when you're ready to look for it.

 

[hal0000]

Sometimes it will be easy to find when the inductor is faulty, the other time not so obvious. With a multimeter, it's easy to know where to look, I'll wait when you're ready to look for it.

 

[jarotech]

So, it seems that you have found which component is defective.

 

[hal0000]

So, it seems that you have found which component is defective.

Yes and on eevblog forum i found someone just like me same inductor broked

You can check via this link: eevblog and i found out he shared his issue on techguy forum techguy forum and he said it could be TAI-TECH HCB1608KV-300T30 (3A Ferrite Bead)

Then i purchased this product:
Wurth Elektronik Ferrite Bead (EMI Suppression), 1.6 x 0.8 x 0.8mm (0603 (1608M)), 30Ω impedance at 100 MHz
DATASHEET PDF

Can i use this ? btw i already purchased this product or what can i do ?

 

[jarotech]

Yes, that inductor will do just fine.

 

[hal0000]

Yes, that inductor will do just fine.

You think is this the only one broken ? I checked motherboard with my eyes and didn't saw anything like that (burned)

 

[jarotech]

If you have an image on a monitor connected to the HDMI port, it's the only defective component on the motherboard.