Hi. i've a mother board for lenovo T400 turn on normal but backlight's black (shaded), I measured on inveter & LCD CONNECTOR All voltage present except 20V not available on F7 for alimentation pins 86 & 88 & 90. i removed it for measure But 20V not found on place i Replace it their last but without result. pls someone help me.
-
Last edited by karim011; 03-16-2017, 05:29 PM. -
Re: mother board for lenovo T400 turn on normal but....
what about fuse in front of LVDS connector? -
Re: mother board for lenovo T400 turn on normal but....
it's goodComment
-
Re: mother board for lenovo T400 turn on normal but....
Pls guys help me.Comment
-
Re: mother board for lenovo T400 turn on normal but....
u must have vinnt20 for notebook start. and there is fuse to VBL20 /F7/Comment
-
Re: mother board for lenovo T400 turn on normal but....
Hi Karim, did you check the caps C313, C310 and C307 to ensure they're not shorted to GND?Comment
-
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
Hello everyone,
I'm trying to repair the power supply board from a Lenovo ThinkVision P40w-20 monitor. The board is labeled with the following markings:
- Main PCB code: ILPI-422 VA (dated 2021/11/24)
The monitor is completely dead, no power LED or backlight. Upon inspection, I found a few components that appear damaged, particularly some resistors that are burned and unreadable.
Attached is a high-resolution photo of the power supply board.
Does anyone have a schematic, boardview, or similar power supply that can help identify the... -
Hello friends,
I have this laptop AMD Platform starting & not posting, fan spinning.
When i press power button, the board get almost immediatly 0.5A ~ and board get stuck at 0.5A with power button led blinking indefinitly.
If i stop the computer (pressing 5s power button), board stop and when i restart i get approx 0.37A ~ and
I try to reflash the bios with no luck, same result, and i try disabling onboard ram (i remove resistors accordling schematic), no more progress.
CPU and his area heat, maybe the cpu is dead?
...10-21-2024, 10:23 AM -
This specification for the Lenovo IdeaPad 320 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 320 boardview and 320 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Lenovo IdeaPad 320...09-06-2024, 06:06 AM
Comment