Hi there,
I have a rather large 4-channel ClearCom system with 20+ wall inputs. It looks like the "A" channel splits off to 3 areas from the MS-440 base station: booth, backstage, and catwalks/FOH. None of the catwalk stations work - no mic sound, call light, etc. I've looked at all of the wiring in the booth rack (where the base station lives) and in the amp racks (where the catwalk/FOH run appears to branch out) and I can't see anything obviously disconnected.
Some additional context:
-None of the wall inputs or speaker stations for channels "B" or "C" seem to work. The base station indicates a short on channel "B". I don't think it's an issue with the base station, since those channels work fine if I bypass the hard-wired house system and plug directly into the base station. Fixing these is lower priority, but I wonder if it's connected to the channel A issue.
-There's an RS-440 remote station in the system, using the second set of outputs from the base station. This was disconnected when I started here a few months ago. I tried adding it back in, and it shorted out channels "A" and "D". I'm assuming something is wrong with the remote station. It's not particularly integral to the system.
Any thoughts on how to continue troubleshooting? I've opened up most of the wall input boxes and haven't found anything that looks wrong. I'm guessing there's some sort of break in the line between the base station splitter and the amp racks, which are quite far apart. Any advice on what I should be checking with a multimeter would be super helpful. Thanks!
Here's the initial split at the base station. I'm open to suggestions for cleaning this up.
The inside of the booth rack. I temporarily disconnected the base station to take this photo, since you can't open up the rack when it's connected.
Inside the amp rack, above balcony seating by a followspot position. 4 of the XLR jacks pictured are for channels A-D, I'm assuming they split off at the bus bar (?) below. The highlighted spot seems odd, I'm not sure why one of the XLR lines would just "dead end" on that bar. Is that a sign that something might have been disconnected at some point?
I have a rather large 4-channel ClearCom system with 20+ wall inputs. It looks like the "A" channel splits off to 3 areas from the MS-440 base station: booth, backstage, and catwalks/FOH. None of the catwalk stations work - no mic sound, call light, etc. I've looked at all of the wiring in the booth rack (where the base station lives) and in the amp racks (where the catwalk/FOH run appears to branch out) and I can't see anything obviously disconnected.
Some additional context:
-None of the wall inputs or speaker stations for channels "B" or "C" seem to work. The base station indicates a short on channel "B". I don't think it's an issue with the base station, since those channels work fine if I bypass the hard-wired house system and plug directly into the base station. Fixing these is lower priority, but I wonder if it's connected to the channel A issue.
-There's an RS-440 remote station in the system, using the second set of outputs from the base station. This was disconnected when I started here a few months ago. I tried adding it back in, and it shorted out channels "A" and "D". I'm assuming something is wrong with the remote station. It's not particularly integral to the system.
Any thoughts on how to continue troubleshooting? I've opened up most of the wall input boxes and haven't found anything that looks wrong. I'm guessing there's some sort of break in the line between the base station splitter and the amp racks, which are quite far apart. Any advice on what I should be checking with a multimeter would be super helpful. Thanks!
Here's the initial split at the base station. I'm open to suggestions for cleaning this up.
The inside of the booth rack. I temporarily disconnected the base station to take this photo, since you can't open up the rack when it's connected.
Inside the amp rack, above balcony seating by a followspot position. 4 of the XLR jacks pictured are for channels A-D, I'm assuming they split off at the bus bar (?) below. The highlighted spot seems odd, I'm not sure why one of the XLR lines would just "dead end" on that bar. Is that a sign that something might have been disconnected at some point?