[SOLVED]820-3330-B with No Backlight

[corona2640]

Have 820-3300-B with image but no backlight

Has no sings of liquid damage, already tried known good lcd

Only strange thing I have found is that pins 38, 39, and 40 have 25v when on a known good board they have 33v

 

[ALB-Repairs]

25V?
Thats a backlight, correct me if im wrong.
You have the voltage there, So im assuming the screen lights up black with no display (but noticeably lighter than before its turned on?)

 

[aprendiz]

Do a PRAM reset...

 

[corona2640]

I feel dumb but a PRAM reset brought backlight back. Thanks guys!