(State College, PA, USA)
I've been using the LG 530G for years and suddenly noticed my backlight time seemed to be shorter than normal. I checked my setting and verified it was set to 60 sec. However, the backlight stayed on for only 15 sec. I experimented with 5 and 10 sec., and they both worked accurately. Nevertheless, both 30 and 60 sec. give me only 15 sec.