wax won't move any more

[Loretta Lynn]

my lamp is about 15 years old and has had no problems. today it was fine for about 4 hours, now the wax is just a big glob at the bottom and won't move. what can i do?

[Dr. WHAT?!]

Sounds likes it's overheating or the coil is finished. Did you recently switch out the bulb? whats the wattage of the bulb your using? can you take pics?

[Loretta Lynn]

Hi Dr. WHAT?!, sorry it took me a while to get back, thanks for writing back. It's a fairly old bulb. I have the lamp sitting out, but don't turn it on every day, maybe once every 2 or 3 weeks for about 8-10 hours. The wax always moved just fine, until a few days ago when it would move for about 4 hours, then settle in a ball at the bottom. It did that 2 days in a row. The bulb says "Appliance 40 W Lamp Mexico" (or it may say 4.0 W, its hard to read). I can take a picture of the bulb if that would help, or of the lamp?