[Elecraft] No Backlight K2

[Oscar F Hills]

Well, thanks to great forbearance on my wife's part over this little  
holiday vacation, K2 #5630 is coming right along. I finished up Part  
1, and all the tests are just fine _except_ that I have no backlight.  
The LCD reads fine, but there's no change in it or in the LED  
brightness when I switch between night and day. I haven't tied it in  
a darkened room, but I am assuming I should be able to tell whether  
the backlight is on even in normal room light.

At first I had the terrible fear that I should have taken the white  
film off the diffuser, but an archive search told me I was right to  
leave it there. But now I don't know why I don't have the back light.

Any advice on the most efficient way to troubleshoot this?

Thanks!

Oscar WV1C