I purchased a new Astron RS 70M about 5 months ago, and have been using it on weekends exclusively to power an RCI 2970n2 (at 10W dk). Three months after I bought the PS, it dropped voltage enough to shut the radio. The PS returned to 13.79V after switching it off and then on again, and the radio continued to work without any problems. Just today, it happened again, and I noticed that the PS built-in meter was reading 5V. I disconnected the radio, shut off the PS, and turned it on again. A digital multimeter read 13.79V across the terminals (the built-in meter was @ 13.5V). The local power company is reliable, and I'm not aware of any recent AC power outages or major fluctuations. The only variable this second time was a drop in temperature to 22 degrees F (last night). My equipment is installed in an outside shack (no heat or AC). Could such low temps trigger the drop in voltage (the drop occurred about 10 minutes after powering up), or may I consider the two independent events (voltage drops) as a sign of the PS going bad? This is my first experience with Astron PS's.