Picture but no sound

[Lesley1959]

When I turn on the television, no sound, I reboot system evert time turning on the television,  engineer cane yesterday, Internet lines checked he thought it was a problem with the streaming box.

[caesarome]

@Lesley1959 

What TV service do you have, Sky+, Sky Q, Glass or Stream 

[ZyloKai]

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@Lesley1959 wrote:

When I turn on the television, no sound, I reboot system [every] time turning on the television,  engineer [came] yesterday, Internet lines checked he thought it was a problem with the streaming box.

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If the engineer was there, their job is to make it work or call back to their manager/office/Sky to resolve the issue. To come to no resolution or instructions on what to do next seems incredibly odd to me. 

If you're using Sky+HD, Sky Q or Sky Stream, did the engineer swap out the box to see if it works with a new one, or troubleshoot it?  
I know it's a silly question, but I'm adding it to cover all bases, but did you try changing the volume on your TV remote? 

Did the engineer give you a follow up on what to do?

Note: If you're using a Sky+ or Sky Digibox (the SD only boxes), these are now obsolete and you will need to contact Sky for a free upgrade to Sky Q. 

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This has happened before on Sky Stream due to a software update according to https://helpforum.sky.com/t5/Sky-Stream/Why-has-my-Sky-Steam-Puck-lost-sound/m-p/4546772

Things to do:

1. Check the connections and wires, look for any physical damage or extreme bending. 
2. Check the HDMI cable, if you can try plugging it into something else (like a Sky Q box or Apple, Amazon box) and plug that into your TV . Check if the volume works. If it does, your HDMI cable is OK.
3. Check what your Sound settings are, and ensure it's set to "Auto"
   You can check the sound settings by 
   1. Press Home on your Sky remote.
   2. Scroll down to the bottom of the home screen and select Settings.
   3. Select Picture & Sound, then Sound.
   4. Select Digital audio output HDMI and make sure it's set to Auto.
4. If you've done all that and there's still no sound, try doing a factory reset.
   You can find how to do this here: https://helpforum.sky.com/t5/Sky-Stream/I-had-to-reset-my-stream-puck-as-some-of-my-apps-weren-t-wor...

[nolte]

Ii had this problem with my sky q a few weeks ago.

It might be worth a try to open an app on the tv (not through your sky box) like netflix, disney plus, youtube etc) and see if the sound works there.

If it does, check if it has returned to your sky box.

It worked for me.

[ZyloKai]

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@nolte wrote:

Ii had this problem with my sky q a few weeks ago.

It might be worth a try to open an app on the tv (not through your sky box) like netflix, disney plus, youtube etc) and see if the sound works there.

If it does, check if it has returned to your sky box.

It worked for me.

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It's likely Sky Stream as OP said
"... he thought it was a problem with the streaming box"

[nolte]

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@ZyloKai wrote:

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@nolte wrote:

Ii had this problem with my sky q a few weeks ago.

It might be worth a try to open an app on the tv (not through your sky box) like netflix, disney plus, youtube etc) and see if the sound works there.

If it does, check if it has returned to your sky box.

It worked for me.

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It's likely Sky Stream as OP said
"... he thought it was a problem with the streaming box"

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I understand, but I was just sharing what helped me when I had similar issue 3 weeks ago. Maybe it might help them. It might not, but no harm in trying.

For me, it took 1 minute to do, and involved no rooting with cables (which as a person with a physical disability, it can be very awkward and It would  always make me nervous that I might break something)