Left and right indicator failure.

Investigated and Found 5 amp fuse for flasher unit blown. Removed flasher unit and cover only to find a burn out on one of the chips - middle of 3 soldered links to board. Ordered a new flasher unit and plugged in. Hazards and indicators worked fine - initially! 3 turns later and all failed again.
This time the 5 amp fuse was intact. The flasher has suffered the same fate. I would be interested in experiences / views to rectify.

In anticipation.
Bob