Hi,
They are Ebay cheapies, though would not have thought they would die out that fast.
The strip is 24cnm long and has 14 5050 arrays, each array has its own resistor - no datasheets available other than basic light spectrum of 'blue' !
The well ventilated hood has 2 x 18w compact fluoescent tubes.
Assume its something to do with the heat, will have to try a strip in free air and see if it dies as quick, though strange that the current remains almost the same ?