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2012-02-05 by Quazimodo
Hi everyone, I managed to get the key changed on this Roland A-80, but now I fnd that hooked up to another Midi device, it doesn't 'control' like the controller it is supposed to be. It's like no Midi is coming out. Ha! I should have check this before diving in to fixing a broken key. You live and learn... Anyway, anyone have any ideas where I should look first, please? Cheers, TOM
2012-02-05 by narfman96
Hi Tom, If you have a pc with midi hook it up and use Midi-Ox to view the midi messages. I found the A-80 Service manual at www.synfo.nl You can try a factory reset which also accesses the test mode. Remember it will wipe all the custom settings in memory. To enter test mode: While holding the 1st, 3rd, and 4th buttons under the display, press channel then press any cursor button. Yeah I've got 6 arms too... He, he. If it actually component failure I would check IC1 and IC2 (74LS03)on the Jack-B board. The midi out signal comes from the CPU to these gates. The connectors and cable could be suspect too. With 4 midi out jacks one or more should work if it was bad solder connections there. They shouldn't all fail at once. Good luck, Fran --- In vintagesynthrepair@yahoogroups.com, "Quazimodo" <noddyspuncture@...> wrote:
> > Hi everyone, > > I managed to get the key changed on this Roland A-80, but now I fnd that hooked up to another Midi device, it doesn't 'control' like the controller it is supposed to be. It's like no Midi is coming out. > > Ha! I should have check this before diving in to fixing a broken key. > You live and learn... > > Anyway, anyone have any ideas where I should look first, please? > > Cheers, > TOM >
2012-02-05 by Quazimodo
Hi Fran, Many thanks for the link to the manual. Yes, I already tried the reset... but no joy. I checked the battery. Full 3v. I am leaving the battery out for a day to see if then putting it back might resolve the issue. But there isn't anthing coming from any of the Midi outs. At least now I can trace the path with the schematic. Cheers, TOM --- In vintagesynthrepair@yahoogroups.com, "narfman96" <narfman96@...> wrote:
> > Hi Tom, > > If you have a pc with midi hook it up and use Midi-Ox to view the midi messages. I found the A-80 Service manual at www.synfo.nl > > You can try a factory reset which also accesses the test mode. Remember it will wipe all the custom settings in memory. To enter test mode: While holding the 1st, 3rd, and 4th buttons under the display, press channel then press any cursor button. Yeah I've got 6 arms too... He, he. > > If it actually component failure I would check IC1 and IC2 (74LS03)on the Jack-B board. The midi out signal comes from the CPU to these gates. The connectors and cable could be suspect too. With 4 midi out jacks one or more should work if it was bad solder connections there. They shouldn't all fail at once. > > Good luck, Fran > > --- In vintagesynthrepair@yahoogroups.com, "Quazimodo" <noddyspuncture@> wrote: > > > > Hi everyone, > > > > I managed to get the key changed on this Roland A-80, but now I fnd that hooked up to another Midi device, it doesn't 'control' like the controller it is supposed to be. It's like no Midi is coming out. > > > > Ha! I should have check this before diving in to fixing a broken key. > > You live and learn... > > > > Anyway, anyone have any ideas where I should look first, please? > > > > Cheers, > > TOM > > >