After using my box using SCART for a few days before finally getting a cheap HDMI cable, the signal strength massively weakens and all the HD channels don't work. After doing a retune I had to remove the HDMI cable to get them back on another retune. (Signal quality also deteriorates on other channels although I get them fine). I've seen this mentioned in a few other threads, but is this a known problem on some Freeview HD boxes? Is the problem with the box (i.e. issue with the circuitboard) or will using some will using some electronic tape to shield the RF cable near the box help? Quite annoyed by this. I'm also not paying extortionate prices for cables for a half baked workaround. Thanks.