LCD screen flickering

LCD screen flickering

Postby vincitygialam » Thu Sep 13, 2018 9:16 am

Hello,

I just finished assembling my scope. It ran fine for about an hour. Now when I power it up, it works well for a few minutes but then the begins to flicker and then goes black. I measuring voltage across pins 16 and 18, I get a stable 2.8v while the screen works properly. Once the flickering stops, the voltage drops in sync with the flicker and the drops to 0 when the screen goes black. I reflowed all the connections but that didn't help.

Any ideas?
Thanks!
vincitygialam
 
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