Hey all, had a unit that was experiencing the dreaded flashing lcd of death that some of these units experience. Until I upgrade to one of the newer thunderbolt units, I just wanted to get this one back up and hobbling along.
The + and - 8v rails both draw ~ 900mA on startup. The power supply is rated for 500mA each. So what I did for a work around was to cut out the current limit resistor (off pin 6 I believe, check the datasheet to be sure)on the power switch IC on the power supply board. This raises the limit from 2.1A to 3A. I also added a couple large caps to those rails and the 5.5V rail.
I am now able to consistently power up the unit without fail (since this afternoon). If it does happen to flash, powering down and waiting a bit for those rails to decay low enough should allow for a good startup. Ideally I think that the power supply might get replaced, possibly by a beefier external supply.
Hopefully this helps those out there who might have this issue. I looked everywhere and couldn't find anything remotely helpful. Again, this has not been tested over time yet, just a positive step to fix this under powered device.
828mk3 FireWire flashing screen of death fix
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Discussion related to installation, configuration and use of MOTU hardware such as MIDI interfaces, audio interfaces, etc. for Mac OSX
Discussion related to installation, configuration and use of MOTU hardware such as MIDI interfaces, audio interfaces, etc. for Mac OSX
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chrismilne
- Posts: 6
- Joined: Mon May 01, 2017 8:34 am
- Primary DAW OS: Windows
Re: 828mk3 FireWire flashing screen of death fix
Hmm..is this some sort of known issue with this generation of MOTU units? My 896MK3 hybrid is doing something similar. So if i pay to have it fixed it's likely to come back?