Astron RS 35A problem

[Madmark]

I inherited my brother-in-laws ham and CB equipment, so I decided I'd get into amateur radio being as I had all the equipment. A disclaimer is in order- I know NOTHING about electronics... I
I wanted to test out some of the CB's and put them in my yard sale. I guess I was lucky that I tested the voltage on the power supply before I plugged in a radio. Instead of the rated 13.8 volts, this unit is putting out 22.5 to 22.9 volts on all the output connections. It is an Aston RS 35A. I don't have the money to bring it in to be repaired, so I thought I'd ask some opinions. Anyone have any ideas what to do??

Thanks in advance!

[Torwe]

I have all my gear, hooked to 12v deep cycle batteries. I have 4 50 amp hr batteries hooked in parallel which gives me 200 amp hr of storage. A feller I know here in town gives me his old batteries out of his electric wheelchair. His chair uses 2 batteries and they change them for him every year. But anyway I run 2 scanners and 5 radios like this. I keep a small 2 amp battery chaqrger hooked to them and so far in 2 years have never been low on power. And the advantage is that if the power went out  my radios still work. I also have a 12v flouresent lite hooked up for the same reason. If I did not have the source for the free batteries I would buy a good deep cycle marine battery and hook it up the same way.