Start with someone inside and someone outside. Using a garden hose running slow, work from the bottom and slowly work up the edges. Sooner or later the inside observer will see the water entry and then you can locate the leak. DO NOT SPRAY WATER FROM...
If possible return it to the dealer where it was repaired. Otherwise you can try to dry it out by removing the bulb and using a hair dryer on low heat. It apparently has a leak or crack somewhere. Good luck.
