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Old 02-17-2019, 08:50 AM   #1
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Question Cablemaster Help

My Glendinnings cablemaster has stop working after 14 years. Troubleshooting guide says to first check the voltage at the relay. In my case the blue 12-volt wire to the cablemaster rely was at .5 volts instead of 12 volts. The fuse did not blow and is fine as is the wiring at the fuse box since it has blown before and was easily fixed by replacing the fuse. The schematics show that the cablemaster is wired to the transfer switch which it clearly is not. I have traced the blue wire to a bundle of wires behind the inverter but have not been able to find where it is connected. I am now wondering if the relay itself is the cause of the voltage drop? Any help would be greatly appreciated.
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Old 02-17-2019, 09:17 AM   #2
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Are you saying that the supply wire to the relay only has .5V ,if so you need to fix that first.
Should have 12v constant, ground, switched 12v and out to the device. This would be the most common way to wire the relay.
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Old 02-17-2019, 12:59 PM   #3
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Yes the blue wire is the primary and only 12-volt wire to the relay. My question is where does this wire connect to before it enters into the fusebox at fuse 2 - cablemaster. This is one potental source of the voltage drop and a good starting point for troubleshooting the problem. There are schematics that show the wiring from the Fuse 2 out to the cablemaster, but no schematics for that show the origin of the blue wire to the fusebox. My concern is that blue wire runs almost the length of the coach thru wire bundles. If there is a short somewhere along that path it could effect other systems as well.
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Old 02-17-2019, 05:29 PM   #4
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….on my 2003, there is a specific fuse in the 12v fuse block in the bathroom area for the cablemaster, usually under the bathroom sink in the sink cabinet. So power doesn't have to "run the length of the coach." Have you checked that fuse?
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Old 02-17-2019, 07:53 PM   #5
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Check the output side of the fuse. I had a problem with the wiring on the bottom of the 12 volt distribution block located under the inverter circuit breaker panel. Loose connection, simply loosen the screw push the wire in all the way then tighten the screw.
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Old 02-18-2019, 06:21 AM   #6
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...good tip Dr. D!!!!!! Checking [loosen and re-tighten] wire connections [both 12v and 120v] throughout the coach every couple of years is a really good idea....
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Old 02-18-2019, 07:31 AM   #7
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Thanks for the tip. I'll give it a try and let you know. It's something that I should be doing on a regular basis.
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Old 02-23-2019, 01:18 PM   #8
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As it turns out the ground wire to the DC fuse box (under the vanity) was loose. I didn't notice it on lower powered circuits but the cablemaster draws enough power that it would not operate without a good ground. Problem solved.
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Old 02-23-2019, 01:31 PM   #9
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Quote:
Originally Posted by packetx View Post
As it turns out the ground wire to the DC fuse box (under the vanity) was loose. I didn't notice it on lower powered circuits but the cablemaster draws enough power that it would not operate without a good ground. Problem solved.
Glad you have it figured out and a cheap easy fix!
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Old 02-28-2019, 07:13 AM   #10
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Ok I'll bite, what's a cablemaster?
Nvmd
I googled, I don't have a cord reel
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