I have had no experience with having cameras serviced but I do have a couple of recommendations...the runaway one I would request an RMA for. The BAT DEAD one, I would remove all power...internal batteries and external connections. Then before you install the new batteries, watch the screen and make sure it goes completely blank...this can take a while but if you keep pushing buttons with all power removed, it will go a little faster. Once the screen is blank, you can then place the new batteries in and start over...be sure to check your date/time and any settings just to make sure they are still accurate. I have also gone thru many antennas, between squirrels and bears, they don't last long sometimes!...I ordered a couple of spares when I ordered my PowerHouse flash modules from Cudde.