No siginal on TV

[Worldofsky]

I have just moved house

I have main box and 2 mini boxes 

These were all connected on Monday 3rd February. 

It was a workong as the engineer left them al on

I havent been at the property since Monday

Tonight I been watching my main TV without any issues

I then went to bed to put my TV on with one of the mini boxes, sky came on but within 5 - 10 seconds it went off and my telly said no siginal

I have checked the cables and tried all HDMI ports and it comes on for the 5-10 seconds but then goes off

I have never had this issue before

Thanks

[Daniel0210]

@Worldofsky 
A message displaying ”no signal” tends to be generated from your TV and normally means your TV’s not seeing the Sky box on the relevant HDMI input. Have you tried a different HDMI lead? 

[Worldofsky]

Hi The issue seemed to have resolved as this morning the sky stayed on and I didn't get the no error message on my TV However tonight, the same time as last night I have came to bed and put the tv on and it's happening again So it's only doing this at night tome What is happening