My lava is melted but it stays in the bottom without moving!!!!!!

[willkawayra]

is the 2nd day i turn it on almost all day after a couple of years without turning it on ( although the last time i turned it on it happened the same thing)
any tips?

also had shaken it a couple of times because of this problem that it would not flow while being melted!

[willkawayra]

it just says, lava brand, motion lamp

[willkawayra]

thanks man i will try, yep is a 40w bulb, but i think is new, is kind of 3 years old, but have not used it more than 20 times, i will try the 60 w one, thanks for the advise