After a day defective

Can only advise the purchase! My son got it from Santa Claus and she made a solid impression. But after a day it was broken, the contacts no longer function properly. The grandfather is a trained electrician and has tried to repair the contacts, but after another half day the bulb does not light again.
Also it is very fast very warm, we have continuous operation not tried, it would not recommend in this case ...
My son is heartbroken and we will now probably order another brand.