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#1559882 - 01/29/18 10:18 AM VS-2480HD intermittent audio output
GNTBeer Offline
Space Cadet


Registered: 08/11/07
Posts: 6
I haven't posted to this forum in over 10 years as my trusty 2480 has been solid - until recently. So here are the symptoms:

No audio output from any recorded track to any output. Nothing in the headphones, nothing in the speakers, no meters showing any signal.
This is across multiple projects at different sample rates. Master fader is up, nothing solo'd, nothing muted, all tracks playback active, routing is normal and going to master and monitor outputs correctly. Unit is not in CD Master mode. I have tried internal and external clocking and I DO get a pop in the speakers when that change is made. I have tried playing projects both from the internal IDE and an external SCSI drive. I have tried disconnecting all SCSI devices and external digital I/O. The disk activity light blinks as usual. The waveview on the tracks show recorded waveforms.

The oddest and most frustrating part is that the problem is intermittent. One day it's symptomatic, the next day it's not. I have had it start playing a project and then suddenly the output disappears without anything being touched. I have taken it to an authorized Roland repair shop once, and of course it wasn't symptomatic then so hours of time and $50 wasted.

My next step is to see if I can start disassembling and re-seat any cards or ribbon cables unless someone has another suggestion.

I'd appreciate any help to keep the old workhorse humming.

Thanks!

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#1559984 - 01/29/18 11:05 PM Re: VS-2480HD intermittent audio output [Re: GNTBeer]
keeppracticing Offline
Planeteer


Registered: 07/13/12
Posts: 1116
Loc: Atlanta
Back all of your projects up.

Try the cheapest stuff first... see if an audio CD will playback all the way through, remove fx cards (and keep them out), replace the CR-2032 battery, replace the hard drive.

If you don't stumble across something will doing that, it's probably the mother board. Hard to find these days, Roland doesn't offer parts any more for the VS \:\(

Keep your master clock set to internal and disconnect any external digital devices hooked up to optical/coax port/RBUS, too.

Sorry to hear you're having problems, hope you figure it out.

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#1560020 - 01/30/18 09:29 AM Re: VS-2480HD intermittent audio output [Re: keeppracticing]
GNTBeer Offline
Space Cadet


Registered: 08/11/07
Posts: 6
Most of the projects are backed up to an external SCSI hard drive (the important ones, anyway). I removed and re-seated the only FX card last night and I got output - temporarily. All external devices were disconnected and I was using internal clock. I ran as much of the diagnostics as I could figure out. I got as far as the FtSW check, which I'm guessing didn't work because I don't have a foot switch.

Are there diagnostic check instructions on here somewhere? I searched a little last night, but couldn't find any.

I also saw reference to a service manual making the rounds. Is that still available from someone?

Thanks for your suggestions!

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#1560112 - 01/30/18 06:58 PM Re: VS-2480HD intermittent audio output [Re: keeppracticing]
GNTBeer Offline
Space Cadet


Registered: 08/11/07
Posts: 6
I booted the unit tonight and managed to get playback. I added internal metronome and let the track play. About four minutes in, the audio for the tracks dropped out, BUT the internal metronome audio kept playing. I swapped the battery and ran the same test on the same project. This time the audio stopped about 2 minutes in but the metronome kept going. I'm starting to think it might be hard drive related, even though the drive passed the drive scan with no issues. Thoughts?
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