Ah that's good Bill, I wasn't too sure what you were wanting to do so took a 
jab that you were wanting the same screen showing on both the Mac and TV ;-))

Cheers,
Ronni
Sent from Ronni's iPad4

> On 15 Apr 2017, at 4:50 pm, Juliet Kitson <[email protected]> wrote:
> 
> Thanks Ronni
> I was playing a program recorded with eye tv, but it showed on the desktop 
> but not on the tv thanks very much it all works as I want it both screens 
> show same picture.
> Regards Bill
> 
>> On Sat, Apr 15, 2017 at 4:40 PM, Ronni Brown <[email protected]> wrote:
>> 
>>> On 15 Apr 2017, at 2:24 pm, Juliet Kitson <[email protected]> wrote:
>>> 
>>> Hello ""Help""
>>> When I connect thunderbolt to TV screen I get a different picture to my 
>>> screen a message I found said it was my secondary desktop how do I change  
>>> this.
>>> Regards Bill
>> 
>> Hi Bill,
>> 
>> Sounds like you have set up as an extended desktop?
>> 
>> I’m not sure what you are wanting to achieve, but if you are trying to use 
>> the TV as a larger Display (Desktop) of your Mac.
>> 
>> Check the System Preferences menu for Displays and set option to Mirror 
>> Displays.
>> Under Arrangement - The blue boxes represent all displays that you've 
>> connected. 
>> The white bar at the top of both boxes represents your primary display. 
>> In video mirroring, both displays have a white bar because they show the 
>> same information.
>> 
>> Cheers,
>> Ronni
>> 
>> 13-inch MacBook Air (April 2014)
>> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
>> 8GB 1600MHz LPDDR3 SDRAM
>> 512GB PCIe-based Flash Storage
>> 
>> macOS Sierra 10.12.4
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