I replaced the battery in my wife's ironman. Ever since then, if she used the indiglo light, the watch would emit a high-pitched sound and often reset itself. Note that indiglo often emits a faint high-pitched tone; in this case, it was much louder than normal.
After disassembling the watch once again, I found that one of the three clips on the plate that holds the battery in place was bent (the one on the right); as such, it was not clipped securely. I bent it back, reassembled; now the watch is back to functioning as it should.
Something to watch for when replacing the battery. Also, be sure to "Reset" the watch by pushing down on the little reset metal tab just to the left of the top clip before reassembling the watch.
After disassembling the watch once again, I found that one of the three clips on the plate that holds the battery in place was bent (the one on the right); as such, it was not clipped securely. I bent it back, reassembled; now the watch is back to functioning as it should.
Something to watch for when replacing the battery. Also, be sure to "Reset" the watch by pushing down on the little reset metal tab just to the left of the top clip before reassembling the watch.