I bought my new Jester 24/48 and was delighted with it for 6 days till I connected a VGA monitor to it. The screen strobed on and off (for about 1 second at a time) after about 30 minutes of usage. It was returned to the supplier and was replaced immediately with another one today (with the next consecutive serial number from the one I returned). It has the same fault as the VGA monitor signal is already flashing on and off. I tested my monitor with a Fat Frog and it remained stable as it always has done after many hours of use. Any suggestions or should I pay for it to be returned to my supplier for a third replacement and hope this one works?