I just got off the phone with Tri Tronics and was really disappointed to learn they don't repair their Pro 500 G2 transmitters. So I call Collar Clinic to find out they couldn't repair the Pro 500 G2 or G3 transmitters. The good news is that Tri Tronics indicated they could possibly repair the Pro 500 G3 transmitter. If I had known this was the case I definitely would not have purchased a Pro 100 G3 2 weeks ago, they would have very likely lost a long time customer. So unless you are needing batteries for these pricey transmitters you are probably up the creek without the proverbial paddle.
If it needs fixing trash it!