Hi there davidenco,
Firstly I'd like to welcome you to the forums and say that I'm really sorry to hear that you've been experiencing some issues with your V+ box.
The LD40 error message says that your set top box is struggling to get a signal, so this could mean a faulty set top box, or even a faulty connection to the box.
I've done some testing and can see that your V+ box is still not getting a connection, so I'd like to arrange a technician to call out and investigate further for you.
I'll send you a private message in order to arrange this, please look to the top right of this page where you'll see a purple envelope icon. Click on this and you'll see my message.
Apologies once again.
Huw