Hi newbie here. I have a few vintage computers, Amigas mostly, but I never owned a Mac before and don't know much about them and I found a Quadra 840AV and I could use some advice. I don't have an Apple monitor or any other accessories just the tower. There seems to be some life in it. When I power it on, it immediately makes a "chime" sound from the internal speaker - is this a good sign? The PSU fan runs and I can hear the hard disk spinning (but not seeking I don't think). At one point it seemed to go through a boot sequence and then made two beeps - what does that mean? It is not doing that any more. What do I need to connect it to a TV or VGA monitor? I see there are adapters that convert the DB15 video out to HD15 VGA e.g. http://www.ebay.co.uk/itm/390558193126 I connected the yellow phono socket marked "out" to a TV composite input but I didn't get a picture - should I?