Lenovo V110-15ISK schematics

[equilibrier]

Re: Lenovo V110-15ISK schematics

So, I fixed the usb by sacrificing the integrated web camera. Took the camera, cut the cable, identified the power and ground lines + data +/- (always twisted wires), ignored other two, found an unused space on the MB to place a new usb port, soldered the wires, cut the plastic cover of the laptop to support for the new usb port, and it was done. An usb 2.0 port, with something like 3.3 V instead of 5.0V (last measure) but it seems it supports a mouse and/or an usb memory flash.

Thanks for the advices though, I'm sorry it didn't worked out with the strap, it would have been wonderfull, but I didn't knew how to debug the short I was having.

[equilibrier]

Re: Lenovo V110-15ISK schematics

What impedance USB pins are showing ?. GND, Data + , Data - and VCC are the USB 2.0 pins. If you are not sure which one is which, simply measure impedance of all pins in reference to GND and report back. We can try to figure out what additionally went wrong.

Ok, although I solved my problem using the web cam, I'm very interested on the technique to discover the short source, withou using an electronic schema (don't have one for this laptop). Can you still provide me the practical "theory" behind the technique you have in your mind, please ? You told me to measure the impedances, ok I don't have the laptop anymore, I returned it to the owner, but can you continue please ? After telling you the impedance what would have been next ?

[anshad]

Re: Lenovo V110-15ISK schematics

Ok, although I solved my problem using the web cam, I'm very interested on the technique to discover the short source, withou using an electronic schema (don't have one for this laptop). Can you still provide me the practical "theory" behind the technique you have in your mind, please ? You told me to measure the impedances, ok I don't have the laptop anymore, I returned it to the owner, but can you continue please ? After telling you the impedance what would have been next ?

From what you ave described, i don't think that data lines of USB ( + and - ) are short. They came directly from the PCH and if short, probably all of your USB ports may stop working. I believe that only VCC line is short and considering that chip which is fried, there can be a few components left in the VCC line. Usually some filter caps and may be some ESD protection components too. Professional technicians may inject a small voltage and look for components which are heating abnormally to find the faulty ones. Even without a PSU, you could have simply removed those components one by one until the short is gone.

[Abdulrahman]

Re: Lenovo V110-15ISK schematics

Hi
I have the same holidays with the same device
Damage to teeth socket USB 2
Damage to the 5 volt chip Power USB U3601
Damage to the chip Power RAM PU5101
No maintenance completed
However, the initial scan appears exclusively on the legs of the USB port data on the ground

[mrancans]

Re: Lenovo V110-15ISK schematics

Hi
I have the same holidays with the same device
Damage to teeth socket USB 2
Damage to the 5 volt chip Power USB U3601
Damage to the chip Power RAM PU5101
No maintenance completed
However, the initial scan appears exclusively on the legs of the USB port data on the ground

Hey

Did you solve this problem in the end? Ive replaced PU5101 and solved Short to ground but still no power on?

Ta

[recep1982]

Re: Lenovo V110-15ISK schematics

pls Lenovo V110-15ISK schematics
PU5101 what?

[SMDFlea]

Re: Lenovo V110-15ISK schematics

pls Lenovo V110-15ISK schematics
PU5101 what?

Read post 13 and 14 .

[recep1982]

Re: Lenovo V110-15ISK schematics

Read post 13 and 14 .

thaks frend

[iv4nosky]

Re: Lenovo V110-15ISK schematics

I have same laptop with no 5v_hdd /5v_odd / 5v_fan . 5v is perfect at 5v_ALW . choke is working fine. There is a little controller after both 3,3 and 5v chokes. Its marked with U4001 (T22K 5016) but I cant find real name.
Does anyone know it ? Thanks

[Vanara computers]

Re: Lenovo V110-15ISK schematics

15277-1 schematic plz

[AwaisMinhas]

Re: Lenovo V110-15ISK schematics

This is what actually hapenned, the laptop is used in a school and I'm the IT guy. Someone actually broke the usb port plastic, tried another pass, bended the metalic pins, touched them together, short circuit, pufff.
I'm merely an electronics beninner, but I have willing to learn on a practical way. So I wanted to fix this, I dissasembled the laptop and looked at the mb, only the U3601 piece was visible fried. I removed it from the board, and because the damaged usb port was hard for me to remove, I broke it's pins in short width so that they would not touch themselves again and used silicon to temporary fill-in the hole. From then on, you know the story, there is a short on the health usb port.
Laptop turns on, it works perfectly, but without usb. I even tried a self-powered usb hub initially (I thought the signals may be ok, but the powersupply from the laptop would have been damaged), it didn't worked, know I know why (short somewhere). The short should not be from the damaged siliconed usb port, but I'm not 100% sure about that.

So... ?

Check the standby ic..i think that was damaged

[snake***]

Re: Lenovo V110-15ISK schematics

hello

lv115sk mb 15277-1n boardview please

[Bartoloni]

Re: Lenovo V110-15ISK schematics

same issue on PU4501.... injection on upper inductor (5V ) make the step-down absorb 100ma ...
injecting the 3.3v make no absorbtion from pu4501...
also.. the SIO is cold. i will try a replacement of the step-down...

[razadom]

Re: Lenovo V110-15ISK schematics

Hi all
someone can share boardview LV115SK 15277. The schematics that i found is LV114-115
but the cpu is AMD. Mine is intel so I need the matching boardview or schematic.
Thanks
ref LV115SK MB 15277-1N 448.08B01.001N

[NikhilSimon]

Re: Lenovo V110-15ISK schematics

[musanide]

Re: Lenovo V110-15ISK schematics

thanks

[musanide]

Re: Lenovo V110-15ISK schematics

LV114-LV115

thank you

[tavito]

Re: Lenovo V110-15ISK schematics

Thank you so much

[Noreddin]

Re: Lenovo V110-15ISK schematics

thanks

[musanide]

Re: Lenovo V110-15ISK schematics

thanks