Hp 25 LED brightness

[Graan]

Thanks for replies.

I assembled the calc already. Might take a look later. I measuerd the voltages when I had it apart and remember Vdisp was about 4.1 V
The 25 display is just a bit less brighter than the 25C so not really a big problem.
Since the pcb had some battery corrosion it might be something related to it. Might not have cleaned off all of it.

/Andreas