I have a Goodmans GDB4 freeview receiver which is on the whole OK. My only problem is that very frustratingly it occasionally suffers from interference (short temporary blockiness/loss of sound) when certain lights in the house are switched on. I have tried everything I can think of - Outside aerial, Screened cable & screened wall plate all to no avail. My last throw of the dice would be to buy a Sony VTX-D800U in the hope that being a better quality box it may be less susceptible to such interference. The buyers' reviews on Amazon tend to suggest this is possible?From anybodies experience could this help solve the problem or am I just wasting my money and have to live with the problem? Anybodies help is greatly appreciated. Thanks.