Replaced Broken/Cra​cked Screen On My T510 Now Screen Is Very Dim

Hi, I replaced a broken/cracked screen (which was working fine with backlight) on my T510 with another LCD screen and now I can't see anything unless I hold it at a certain angle in bright daylight. I've read a little around this topic and some searches have suggested the LCD convertor may have been shorted so I replaced with another but still a no go. Others searches suggested it may be a fuse that I may have blown on the motherboard, if so is this an easy fix? As I can seen the screen is working, is it something to do with the backlight? Any thoughts/advice would be really appreciated. Thanks

Backlight system consist of three components:
1) MB
2) Inveter
3) Lightsource
At the moment you don't know where the fault is, so you have to test each of components. Start testing with lightsource. You write that your previous screen had working backlight. If you still have that screen, connect it to your current inverter. If backlight is working on broken screen - backlight on your current screen is faulty. If backlight is not working test another component - inverter. Here you have 2 options:
1) Check for output voltage using Voltmeter (be sure to chek if you Voltmeter can handle HV that will be between output terminals).
2) Get inverter from eBay or any other after-market source. Most of inverters are generic, so search by manufacturers model number instead of Lenovo/IBM part number.
If it is still not working with new adapter 0 your MB will have to be replaced.
T430s (i7 / HD+ / Intel 520 SSD / 16 GB Ram)
Previous: X60s, Portégé R100

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