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Search: Posts Made By: spintop
Forum: Abit - Asus - Aopen 02-16-2020, 09:11 AM
Replies: 2
Views: 449
Posted By spintop
Asus H61M-A usb3 Schematic

Anyone has Schematic, boardview for Asus H61M-A usb3

Thanks in advance
Forum: Troubleshooting Computer Displays 02-08-2020, 03:38 AM
Replies: 2
Views: 615
Posted By spintop
Re: Acer G237HL

please refer to picture. Backlight is ON. But no picture.
any idea if the main processor chip is spoilt ?
Forum: Troubleshooting Computer Displays 02-04-2020, 02:51 AM
Replies: 2
Views: 615
Posted By spintop
Re: Acer G237HL

Any firmware for Acer G237HL.
My monitor no display but backlight is ON. Thanks.
Forum: MSI/Microstar 01-25-2020, 07:18 PM
Replies: 3
Views: 497
Posted By spintop
Re: Need Schematic MSI B75MA-P45

Thank u for the files.
after reflash bios with the bios file (v19) from MSI website, problem still same.
No display, fan is spinning.

anyone can advice ?
Forum: MSI/Microstar 01-21-2020, 08:22 AM
Replies: 3
Views: 497
Posted By spintop
Need Schematic MSI B75MA-P45

Anyone has Schematic MSI B75MA-p45 ?

Thanks in advance
Forum: Troubleshooting Power Supplies and Power Supply Design 06-14-2019, 08:59 PM
Replies: 1
Views: 333
Posted By spintop
Help needed identify Diode - PSU FSP Hexa 500W

Hi All

Need help to identify a shorted diode on PSU Hexa 500W.
Don't know what rating to replace with.

Shorted diode is D24.
D24 is located just under the long heat sink (indicated by...
Forum: Schematic Requests ONLY! 09-08-2018, 10:47 AM
Replies: 28
Views: 8,771
Posted By spintop
Re: Lenovo Yoga 2 Pro schematic and boardview

I am not able to fix the laptop. I have already sold it away. Are u getting Vin abt 8.5v ? My initial thought was 19v, but I think 8.5v should be normal for this laptop. Then the power ic is fine....
Forum: Schematic Requests ONLY! 12-27-2017, 06:28 AM
Replies: 28
Views: 8,771
Posted By spintop
Re: Lenovo Yoga 2 Pro schematic and boardview

with PQ33 removed, no batt. getting below readings

at PQ4 -- pin4 =1.8v; pin1=20.2v; pin5=20.2
at PQ33 -- pin4 = 1.2v pin1=1.1v; pin5=20.2

at pu10, pin26 (sgate) =1.3v
i checked pq33...
Forum: Schematic Requests ONLY! 12-23-2017, 01:25 AM
Replies: 28
Views: 8,771
Posted By spintop
Re: Lenovo Yoga 2 Pro schematic and boardview

can Vin be just 8.5V when ac adaptor and batt is present ?
Forum: Schematic Requests ONLY! 12-22-2017, 07:25 AM
Replies: 28
Views: 8,771
Posted By spintop
Re: Lenovo Yoga 2 Pro schematic and boardview

at PQ4 -- pin4 =1.8v pin1=20.2v pin5=20.2
at PQ33 -- pin4 = 19.7v pin1=19.7v pin5=20.2
Forum: Schematic Requests ONLY! 12-16-2017, 10:07 PM
Replies: 28
Views: 8,771
Posted By spintop
Re: Lenovo Yoga 2 Pro schematic and boardview

With ac adaptor n battery connected, I am only getting 8v at Vin (see diagram
Page 29). I m expecting 19v here. This is not normal isn't it ?

Btw I have already change the IC pu10.
Dcin at Pin...
Forum: Schematic Requests ONLY! 12-08-2017, 06:45 PM
Replies: 28
Views: 8,771
Posted By spintop
Re: Lenovo Yoga 2 Pro schematic and boardview

580s thanks for the file. its a great help looking into the motherboard.

wonder if u also have the boardview file
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-08-2017, 06:42 PM
Replies: 13
Views: 5,409
Posted By spintop
Re: Lenovo Yoga 2 Pro - cannot turn on, keyboard blinking every 5 sec

mine laptop is still not possible to fix yet.
Forum: Schematic Requests ONLY! 06-21-2017, 07:20 PM
Replies: 28
Views: 8,771
Posted By spintop
Re: Lenovo Yoga 2 Pro schematic and boardview

I have not repaired it yet.
No idea what is wrong.
Forum: Schematic Requests ONLY! 04-20-2017, 05:53 PM
Replies: 28
Views: 8,771
Posted By spintop
Re: Lenovo Yoga 2 Pro schematic and boardview

yes dissembled. main board is small with cpu n ram embedded.
part number VIUU3 NM-A074 rev1.0
ebay is selling but expensive.

anyone got it, thanks
Forum: Schematic Requests ONLY! 04-18-2017, 01:53 AM
Replies: 28
Views: 8,771
Posted By spintop
Forum: Schematic Requests ONLY! 04-16-2017, 08:20 AM
Replies: 28
Views: 8,771
Posted By spintop
Re: Lenovo Yoga 2 Pro schematic and boardview

Cannot on, blank screen, keyboard backlight flash every few second.
Forum: Schematic Requests ONLY! 04-13-2017, 08:17 PM
Replies: 28
Views: 8,771
Posted By spintop
Lenovo Yoga 2 Pro schematic and boardview

Need the schematic of the laptop.
Got a dead laptop.
Thank you in advance
Forum: Schematic Requests ONLY! 03-21-2017, 02:39 AM
Replies: 254
Views: 109,185
Posted By spintop
Re: Motherboard schematics archive?

Hi anyone have the schematics for Lenovo Yoga 2 Pro laptop ?
I cannot find it anywhere.
Hope someone can help.
Thanks !!!!
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 02-22-2017, 06:30 AM
Replies: 23
Views: 2,223
Posted By spintop
Re: sony vaio PCG-7141L NO POWER

pq25 1,2,3,4 all at 19.9v
Vgs is 0v, mosfet is not turn on.
my guess could be a faulty mosfet or pc136.
check if pin 4 and 1,2,3 are shorted
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 02-15-2017, 07:40 PM
Replies: 13
Views: 5,409
Posted By spintop
Re: Lenovo Yoga 2 Pro - cannot turn on, keyboard blinking every 5 sec

i cannot find the chip u mentioned on the board. can u point to me location of this charging chip in image.
thanks
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 02-10-2017, 07:03 PM
Replies: 13
Views: 5,409
Posted By spintop
Re: Lenovo Yoga 2 Pro - cannot turn on, keyboard blinking every 5 sec

i noticed that when i just plugged in the ac adaptor (with battery removed), without doing anything on the on/off button, the keyboard backlight flashes on and off immediately.

maybe this is not...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 02-08-2017, 08:42 PM
Replies: 13
Views: 5,409
Posted By spintop
Re: Lenovo Yoga 2 Pro - cannot turn on, keyboard blinking every 5 sec

yes when plug in ac adapter, the keyboard backlight flashes every few secs, blank screen. i can feel the fan is also turning on and off.

maybe u are right it could be a cpu failure, i also cannot...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 02-08-2017, 07:49 PM
Replies: 13
Views: 5,409
Posted By spintop
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 02-07-2017, 07:24 AM
Replies: 13
Views: 5,409
Posted By spintop
Re: Lenovo Yoga 2 Pro - cannot turn on, keyboard blinking every 5 sec

hi ciki

i managed to reprogram the winbond eprom with 8Mbytes bin file, by wiring the contacts out.
but the result is still the same, blinking keyboard backlight.

I also found an EC file,...
Showing results 1 to 25 of 103

 
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