Hi, this may be relevant, I also have a solid red light on the Hub 3 I received today, I have it in modem mode though, but from what I have read it is supposed to be purple in this mode, although it appears to working OK with my external router as far as I can see. When it was first setting up however, with it still in router mode, the light was solid amber/orange, instead of the white it was supposed to be. It switched to red once I set it in modem mode. Puzzled by the orange light I did a google and found a huge "orange light" thread on this forum, no not open to replies now unfortunately.
Now I know that for LED's to generate different colours they actually do it by having separate red, green and blue LED's in a row inside the box, which mix to show the required colour. I know that white light comes from mixing red, green and blue all at the same time, and yellow comes from mixing red and green only, and purple comes from mixing red and blue. So, since my modem mode light is red, does this mean the blue led in the block of R/G/B is not working? As this would also explain why the colour was yellow when it should have been white, as it would only be mixing red and green giving yellow. So I am wondering if this was the issue in that huge orange led thread.
Maybe if the ChristineS11 sees yellow when booting up when it should be white, then maybe the blue led has gone like it appears to have done in mine.
Virgin Media, do I need to create a separate thread to report my non-purple led issue?