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[Ken Clute]

All - I have an (interesting?) issue with a Midas Heritage 2000 console whereby the input channel audio will fade out and back in with quite regularity. This problem started out being random but now is more repeatable. The channel does not need to be assigned to any groups, VCA's or enabled aux sends... it occurs after the preamps even with EQ disengaged. (as much removed form the signal path as possible). PFL'ing it you can see the signal drop and rise.

Steps I've taken to troubleshoot/isolate:
- Disconnected 2nd Heritage PSU
- removed PSU link cable between both PSU's
- tried both PSU's alone (swapped)
- run PSU AC power to different source
- cleared all assignments (mute, VCA, Scene)
- switched to B CPU and back to A

None of the above have relieved this symptom. Has anyone ever heard of or experienced this problem? Any ideas, suggestions of other things to test, are GREATLY appreciated! My biggest fear is it is something internal to the H2K and not that I might have two suspect Heritage PSU's. (BTW, what color should the PSU voltage LED's on the PSU front be for proper operation? On one PSU no LED's light, and the second, they display yellow. An indicator of a problem with either?)
Thanks for reading!

[Mac Kerr]

All - I have an (interesting?) issue

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Mac

[Kevin Maxwell]

All - I have an (interesting?) issue with a Midas Heritage 2000 console whereby the input channel audio will fade out and back in with quite regularity. This problem started out being random but now is more repeatable. The channel does not need to be assigned to any groups, VCA's or enabled aux sends... it occurs after the preamps even with EQ disengaged. (as much removed form the signal path as possible). PFL'ing it you can see the signal drop and rise.

Steps I've taken to troubleshoot/isolate:
- Disconnected 2nd Heritage PSU
- removed PSU link cable between both PSU's
- tried both PSU's alone (swapped)
- run PSU AC power to different source
- cleared all assignments (mute, VCA, Scene)
- switched to B CPU and back to A

None of the above have relieved this symptom. Has anyone ever heard of or experienced this problem? Any ideas, suggestions of other things to test, are GREATLY appreciated! My biggest fear is it is something internal to the H2K and not that I might have two suspect Heritage PSU's. (BTW, what color should the PSU voltage LED's on the PSU front be for proper operation? On one PSU no LED's light, and the second, they display yellow. An indicator of a problem with either?)
Thanks for reading!

Is this all inputs or only certain ones?

[Ike Zimbel]

All - I have an (interesting?) issue with a Midas Heritage 2000 console whereby the input channel audio will fade out and back in with quite regularity. This problem started out being random but now is more repeatable. The channel does not need to be assigned to any groups, VCA's or enabled aux sends... it occurs after the preamps even with EQ disengaged. (as much removed form the signal path as possible). PFL'ing it you can see the signal drop and rise.

Steps I've taken to troubleshoot/isolate:
- Disconnected 2nd Heritage PSU
- removed PSU link cable between both PSU's
- tried both PSU's alone (swapped)
- run PSU AC power to different source
- cleared all assignments (mute, VCA, Scene)
- switched to B CPU and back to A

None of the above have relieved this symptom. Has anyone ever heard of or experienced this problem? Any ideas, suggestions of other things to test, are GREATLY appreciated! My biggest fear is it is something internal to the H2K and not that I might have two suspect Heritage PSU's. (BTW, what color should the PSU voltage LED's on the PSU front be for proper operation? On one PSU no LED's light, and the second, they display yellow. An indicator of a problem with either?)
Thanks for reading!

Something that affects a specific channel or function is virtually never going to be a power supply or AC mains source issue.
Those kinds of problems will affect the entire desk, as in ALL the LED's are flashing/dim/won't turn on, or there's 120Hz hum on every bus and output etc. So it's not your power supplies.
Jim Sawyer at Sawyer Audio Services is your guy for Midas issues:
Jim Sawyer
Jim Sawyer Professional Audio Service LLC
1041 2nd Street Nw.
New Brighton, Mn.
55112
Email: [email protected]
Phone 952-210-3057

[Keith Broughton]

Ike is correct about the power supply.
Maybe you have a dirty multi connector on the channel strip.
It's "fairly" easy to open the console and pull, clean and re-set the muti cons.

[Jim Sawyer]

All - I have an (interesting?) issue with a Midas Heritage 2000 console whereby the input channel audio will fade out and back in with quite regularity. This problem started out being random but now is more repeatable. The channel does not need to be assigned to any groups, VCA's or enabled aux sends... it occurs after the preamps even with EQ disengaged. (as much removed form the signal path as possible). PFL'ing it you can see the signal drop and rise.

Steps I've taken to troubleshoot/isolate:
- Disconnected 2nd Heritage PSU
- removed PSU link cable between both PSU's
- tried both PSU's alone (swapped)
- run PSU AC power to different source
- cleared all assignments (mute, VCA, Scene)
- switched to B CPU and back to A

None of the above have relieved this symptom. Has anyone ever heard of or experienced this problem? Any ideas, suggestions of other things to test, are GREATLY appreciated! My biggest fear is it is something internal to the H2K and not that I might have two suspect Heritage PSU's. (BTW, what color should the PSU voltage LED's on the PSU front be for proper operation? On one PSU no LED's light, and the second, they display yellow. An indicator of a problem with either?)
Thanks for reading!

Ken,
Give me a shout and we can talk further about if this is console wide or just some channels having issues.
Happy to help out.

Jim Sawyer
Jim Sawyer Professional Audio Service LLC
1041 2nd Street Nw.
New Brighton, Mn.
55112
Email: [email protected]
Phone 952-210-3057

[Ken Clute]

Is this all inputs or only certain ones?

Yes, that's an important piece of info! Any channel across the board, stereo or mono input channel has this issue. Thanks

[Tim McCulloch]

Yes, that's an important piece of info! Any channel across the board, stereo or mono input channel has this issue. Thanks

Where in the signal chain does the level change?  i.e. if you PFL the input can you see the level decrease on the meter over time?  If the input module seems okay, are ALL the outputs affected?  Every submaster, aux mix, etc?

Also your characterization of this as a "fading" is interesting because so many mixer failures are much more binary - it works, or not - or by distortion of some kind.

Jim S. will fix you up but you may be shipping the desk to him.

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