The IR2136 will work with either 3.3 V or 5 V input for enable pin. See page 3 for the specifications as below:
On the failure, is it the driver only that is failing or other components also fail? Is any particular section of the driver failing like VCC to VSS short or HO / LO shorted etc.? After replacing the drivers, is the failure seen again on the same boards?
Thanks and regards,