FL600R flash quit working in the middle of light use shoot last week. The Auto Check and Test Charge lights were both on and the flash was making a vibration noise, like a motor was stuck trying to adjust the focal length of the flash head. The flash would not fire. The flashing lights indicate (per the manual) low batteries, but changing to fresh batteries did not help. Swapped with 2nd FL600 R unit and original batteries were fine in it. Anyone else have this problem with the FL600R? Off to Oly repair in NY (after driven to the Oly Cypress CA facility, only to find a sign on the door saying to send cameras to the NY facility for repair!!) Talked to a person at the Oly medical imaging office next door, she said the camera repair had closed down.