I have a samsung v+ box and the sound keeps cutting out. It happens quite often but we only loose the odd word also the picture will disappear for a few seconds but just lately when the picture goes it sometimes goes to a white snowy screen and the picture will not come back unless you turn the box off.. My box is connected through a Denon AVR-x2200w, my ps4, freeview, netflex and pc all work fine through this, its just the virgin box... the avr is only a week old and this happened on my previous surround sound as well...
Welcome to the community and thanks for posting. I'm very sorry to hear the sound and picture on you V+ box keeps cutting out.
I've managed to locate your account to run some tests. I'm detecting an issue with one of the V+ tuners which could be causing the problem. I can also see you're expecting a replacement box soon. So at this moment there's no need to send an engineer.
The new box should solve your problem. Please post back here if you have any further issues.