dries74maroc ben Posted March 2, 2024 Report Share Posted March 2, 2024 Hello ,( I hope someone can help me).I have a SONY MDS JA 50 ES (NEW OLD STOCK-NEVER USED ).The problem is when i plugged in the standby light remains lit on red and nothing displays on the screen. When I press the buttons nothing happens. Except for (while pressing ams & rec i can access the service test mode).Any help from you would be greatly appreciated.Thanks Quote Link to comment Share on other sites More sharing options...
kgallen Posted March 2, 2024 Report Share Posted March 2, 2024 The CPU is not happy with some power up check. Possibly the drive is not fully ‘home’? Is there a disc in there? if there is a loading belt and you haven’t changed it, I would do that for a start. Quote Link to comment Share on other sites More sharing options...
kgallen Posted March 2, 2024 Report Share Posted March 2, 2024 Our old favourite of extract and reinsert ribbon cables is also recommended. Take care to not lift the fingers on the end of the ribbon. Quote Link to comment Share on other sites More sharing options...
parzival Posted February 5 Report Share Posted February 5 did you manage to get the system booted? I'm also struggling with the same,,, the units starts with the full diagnostics (AMS) or AMS+REC options.. but not on the normal power.. - tried putting the disc tray all the way in - measured voltages on main dig board (IC202) - which seem ok any troubleshooting tips are welcome Quote Link to comment Share on other sites More sharing options...
sfbp Posted February 8 Report Share Posted February 8 Does this model have a RESUME CLEAR function intended to be used after servicing? I don't have a service manual available to me.... You might also replace the 2016 or 2032 battery (if there is one, and yes I'm aware this may require unsoldering). Hopefully there's a way to clear some of the memory? But then, you are definitely looking at getting this thing open on the bench and actually servicing it. For this you need some special stuff, regulated PS, Laser Power meter and perhaps the special hookup (Kevin made some, I think). I'm thinking that you need to see the magic word "Initialize" on the display. If you can trigger that somehow after getting into service mode, you may be in luck. Quote Link to comment Share on other sites More sharing options...
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