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Old 04-22-2010, 10:38 AM   #1
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Boss DVD monitors in bunk models - power consumption when off

Just an FYI about something interesting I discovered this last weekend which might be of use to anyone concerned about maximum battery life when boondocking with these DVD monitors.

Above each bunk they have included (2) Boss DVD monitors and players. These are nice units and great for the kids but when closing one up last weekend I noticed it was warm, even though it had been off. I checked the other one which has never been used and it was the same way. I tracked the wiring down to it's common point and measured a .5 amp draw when both units were off. This might not sound like much but add that up over a week and it's a significant drain. Unless you have solar it would kill the stock batteries in 2 weeks without the disconnect flipped in storage. I added a separate switch to cut power to the bunk areas since I boondock a lot and try to conserve power.
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Old 04-22-2010, 10:45 AM   #2
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Great idea. Also, do you know if you can watch regular TV on the units or only DVD's? I can't seem to be able to find a way to do this.
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Old 04-22-2010, 10:55 AM   #3
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The bunk monitors and the dvd players don't have TV tuners, so you couldn't do it without getting creative.

Since the monitors do have another video input it's possible you could wire a seperate tv tuner to it (vcr,etc). I'm not sure how the sound would work though since I dont know if the wireless headphones get the sound from the monitor or the dvd player itself. You could add some seperate powered speakers meant for mp3 players. I did this for the dvds playing since my 2 year old doesn't keep the headphones on very long while mommy and daddy are trying to get an extra hour of sleep
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Old 04-22-2010, 11:56 AM   #4
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Ahh yes- no tuners. Didn't think about that!! Thanks.
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Old 04-22-2010, 12:03 PM   #5
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Good information Ron. It's amazing how much draw there is from things that are turned "off"
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Old 04-22-2010, 03:51 PM   #6
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so where in the wiring did you put the switch to kill the power

I want to do the same

Do you have any pictures
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Old 04-22-2010, 05:05 PM   #7
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My rig is in storage until the 29th so no pictures for a while, but on mine the power to that area comes into the slide through the floor of the clothing cabinet, under the left closet drawer. Pull that bottom left drawer out and you should see 120v wires to a junction box and some 12v wires just wire tied together. The 12v wire looks like heavy gauge speaker wire and that is the wire you want to switch. My main source was blue on the hot and the feeds that penetrated the bunk wall to the monitors were red. Those are the wires you want to switch or you loose your closet lights if you just switch the main feed. (To be honest, I didnt even realize there were lights in the closet until doing this). Their is no telling if this coloring is a "standard" for them though, so check them with a multimeter, you can use that 120v junction box as a ground. I installed my switch through the cabinet frame to the left of that bottom drawer close to the floor so you don't see it but can still reach it while closed up. You'll need a switch with a pretty long reach since that wood is thick.

BTW, the lights in the bunk are also tied to the same power source as the DVD monitors. No way to separate them that I could find since the wiring is hidden in the slide. You loose the bunks lights when cutting out the monitors.
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Old 04-22-2010, 06:21 PM   #8
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Thanks for the info as when I leave my motorhome for long periods of time, I use the disconnect and my coach batteries still go dead. I am going to try this to see if this resolves my issue
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Old 04-22-2010, 07:13 PM   #9
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Quote:
Originally Posted by Schwing2008 View Post
Thanks for the info as when I leave my motorhome for long periods of time, I use the disconnect and my coach batteries still go dead. I am going to try this to see if this resolves my issue
I would try disconnecting the batteries with your disconnect switch as you would for storage, then try and turn on a monitor. If it doesn't work (and I'm betting it won't) then doing this will make no difference to your batteries going dead when in storage. On many motorhomes the LP gas detector and power entry steps are attached directly to the battery. If left for long periods of time and you only have the stock batteries the LP detector could be, and probably is, your culprit.
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Old 04-22-2010, 08:03 PM   #10
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Not many seem to know the LP detector is not connected to a disconnect switch. When I was working on my rig in the storage lot early this spring. It sounded like a chorus of low battery beeps from the LP detector from people that had left the batteries connected for 5 months. You learn new things every day, I just hope they all figured it out.

It might not be something to worry about for a week or 2, but months is another thing. When storing you probably have you LP valve closed anyway so might as well turn off the detector.

NWjeeper, what's the Trimetric tell you about the draw on that detector?
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