i think its a fake news if the satellite had failed so by now the news must have been spread all around the internet and nothing yet has been confirmed both by tata sky or by isro so guys please make sure that this is fake news
but there are some reason that this news is true. 1st it take too much time for testing , ISRO past record about sat. and also silent both side about activation of gsat-10.
yes, before this it never happened. There is specific schedule of ISRO's for testing and operation of satellite. Hence chamber are very high of failure but we can hope that some tp can be work. In next 30 days if nothing happen then it is full confirm that Gsat is big failure, so we can do only wait and watch.