ScuzzBlog: Diaries May 2018 Entry 18th May 2018: Post: 3 A590: Rev 6 and Rev 7 board differences Whilst watering the garden tonight I reflected on the A590 and couldn't reason why the lights to the front would be different on the one I fixed today. I do recall having to remove wires to the LED. Only one thing for it and I decided to pull a couple of old units from the elephants graveyard and have a look. So in the warm glow of the late evening sun I pictured a Rev 6 and Rev 7 board and was surprised by the differences. I doubt many would be trying to find drives for these machines now but I would have thought in the day this could have caused some real problems. The power supply is on the opposite side and the case support and ribbon connector differ on both boards. The configuration is a little tricky to appreciate as you have to fully remove the metal shielding supporting the drive to actually see the circuit board below. I also picked up on some damage to a connector which I guess could be cause for why the one drive doesn't work. And Rev 6 does in fact have a separate wire connector feeding the lights, whereas on the Rev 7 the LEDs are surface mounted. A590 Rev 6 and Rev 7 Rev 7 [ left ] and Rev 6 [ right ] Rev 7 Rev 6 Rev 6 [ yellow dot centre chip ] Rev 7 [ white dot centre chip ] Rev 6 [ Connector to lights ] Rev 7 [ Surface mounted LEDs ] Rev 7 [ power on left ] Rev 6 [ power on the right ] Rev 7 [ centre chip 5189 white dot ] Rev 6 [ centre chip 0889 yellow dot ] Rev 6 [ ribbon connector on left ] Rev 7 [ ribbon connector to left removed ] Revision 7 Board [ labelled ] Revision 6 Board [ labelled ] Broken connectors.. Problem with these sidecars Showing the two different power connectors

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Last updated 18/05/2018

Chandraise Kingdom

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scuzzscink 2018