Youview remote code for JVC Smart TV

We were given a  JVC LT-24C855 TV the published JVC codes do not work but after 3 hours of testing, using the list here;  The tv will now switch off and I can use vol up and down from the youview remote. The code I used was 2147 intended for a Logik TV. Has anyone discovered a code which works for power on too? 
Thanks in advance.
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