i had a photocell on my pole light. perodically it would burn out for no ap parent reason.
till one day it was just getting dark and i witenesed its death.......
the pole lighht turned on. the incandescent bulb burned out in one of those brilliant sun bright displays.
i went and got another bulb but it didnt light
so i went and got a new pole light sensor from inventory. they were hard to find so i bought several at a time.....
changed the light sensor and all was well.
conclusion..... the brilliant light was from high current that wiped out t he sensor. about this time CFLs came out. that light sensor must be over 10 / 15 years old......... the plastic sensor window has discolored turned m ilky white. i am going to restore my vans headlights, i will try a bit on t he sensor
if the OP is using incandescent bulbs you might try a LED bulb.
longer life may be your reward.