Organ matters - Organs matter!

Thanks for the people to contact David and Barrie, I will give them a ring to try and get to the bottom of this fault.  :)

Thanks for the reply. I have tried to check the midi output and it doesn't seem to work :(
When the stops cut out the power is still working (power lights on and speakers buzzing). Not really great at electronics and when I take the back off it looks like an old episode of Dr Who. Have checked all the fuses but everything OK.

Hi, first timer here.  I have an early 90's Johannuss Opus 275 which has done serviceable job for the last few years but now all the stops cut out within about 90 seconds. Switch it off a couple of minutes and it will work again for 90 secs. It seems to be something is warming up and cutting out. Does anyone have any ideas if this is an easy fix.

This organ does have midi, does anyone think The midi output could work with this fault?

Thanks