Hi fishta. I have a similar problem with a BV10 40. Thie issue I have is with the Sky HD box. All was working for about 1 year then suddenly the PUC stopped working about 30 minutes after the TV was switched on. The Sky remote worked perfectly when the PUC was not working. If the TV is turned off and then switched on again about 20 minutes later, the PUC starts working again
I have noticed that when the ambient temperature in the room is cooler about 18c the PUC works all the time.
I am going to try an experiment next time the PUC stops working and put a fan under the TV while it is still switched on and see if the PUC starts working again