monty2556

I've bought a PC based 4 channel system for my shop. It initially ran for about 30 mins then froze. I sent it back to the supplier who bench tested it and it ran fine. I ran it in my own house and it's fine. I installed it back at my shop and it froze after 30 mins. It was suggested that it could be "spikes" at the shop (no idea what they are!) but a UPS might help. I bought a 650VA/360W UPS from Maplins but, in all honesty, it seem worse. It freezes after about 10 mins. Anyone any ideas?