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x200 AFFS mod - Backlight fails after a minute

Posted: Sat Mar 09, 2019 7:01 pm
by j9m
I know this is a common mod, so would like some advice or know if anyone has had this same issue.

I ordered a Hydis HV121-WX4 120 (the matte version) that came shipped with the digitizer on the back, but no touchscreen on the front.
My current screen uses the ccfl bulb and I can tell this because the lcd is labelled as having it.

So after connecting the new hydis up it runs for about a minute, looks amazing, but then the backlight dies. I can hear a short whine from the inverter as it goes black.
I can suspend the computer, then when I power it back up the backlight comes back on and seems to stay on.

Replacing back my initial screen and everything runs as normal.

Could this be a bad inverter, or is there something on the motherboard causing this? Maybe the cable or bulb is bad?
I could try test a few of these things but just wanted to ask before I buy anything else to test with.
Thanks lads

Re: x200 AFFS mod

Posted: Sat Mar 09, 2019 7:58 pm
by Thinkpad4by3
Likely your inverter is weak. The IPS displays need brighter bulbs so they pull more current. Likely after a few min the inverter is tired and fails.