drop down TV lift

[George Frudakis]

Does anyone have an idea where the power can be turned off that supplies the drop-down TV in a 2002 Marquis? I look in the breaker panel and none will turn it off. Still having problems with the unit not dropping down and the motor humming. Or is there a wire that I can disconnect that will stop the motor from humming until I get someone to repair it? I have tried to do it myself but can't fix it.

[Steve Huber Co-Admin]

George,
We don't have a 2002 Marquis wiring diagram set but the 2003 set shows the TV lift is AC powered via the same AC duplex outlet as the front TV. If your 02 is wired the same you should be able to unplug the motor.
Steve

[Eric Maclean]

George
In the 2003 wiring diagrams on page 55 you will find that the title at the lower right title block reads 2002 Marquis Amethyst
I'm pretty sure that the TV wiring for ot would be the same as a Jasper.

I think Steve is correct in saying the lift is plugged in along side the TV , the diagram states that the plug is behind the TV
Which could mean it's in the cabinet behind or in the lift area .

But you will also see that the wiring to that TV also contains a relay box as do most of these coaches this box will cut the power to the front TV when the ignition is turned on ( to check if your lift is wired to the same power source as the TV simple turn on the ignition and see if the TV turns off and lift motor stops humming.)
The TVs get their power through the inverter and that power can be shut down via breaker on the inverter panel unfortunately that will also shut down many of the other plugs .
The wiring diagram also shows that the power to that relay comes through the bathroom GFI plug so by tripping that plug should shut down the front TV plug and others.
Check the wiring diagram on page 55 of the 2003  Marquis wiring diagram section in coach assist.

Fred Brooks may be able to chime in here as to the location of the relay box and plug as he has an earlier Jasper which may be similar


Hope this helps
Eric

[Fred Brooks]

    George,
  On my 2000 Jasper, the tv was in a cabinet mounted above the driver's side seat and was part of the overhead cabinetry. If you removed the TV you would see a gray 5" by 5" J-box mounted above the driver's window. This box contained the cut-out relay which would cut the inverter circuit out going to the front tv only when the ignition key is on. I believe on the 02 and 03 coaches it is in the overhead cabinetry behind a false access panel above the driver's window or the drivers windshield. As I recall, the TV lift motor has an oval bracket attached to the transmission. If you pull or push on the bracket it dis-engages the transmission and allows you to crank the tv down manually. Fred

[Eric Maclean]

George
You may find the last post on this thread below of interest .

https://beaveramb.org/forum/index.php/topic,5704.msg68102.html#msg68102

[Eric Maclean]

Fred
Thanks for chiming in here I didn't realize that your coach had the same TV configuration as my 97 and the relay is in the same place as we'll.

It sounds to me as if Georges lift motor is humming because of a limit switch out of adjustment would you agree ?
If so have you had any experience trying to access the mechanism or adjusting the limit switches.

Eric

[Steve Huber Co-Admin]

In the 2003 Marquis wiring diagrams Pages 50 & 52 (Ruby & Sapphire) show the TV & lift motor plugged into an AC dulpex outlet but with no ignition cutoff relay. Pages 55, 56, & 57 (Amethyst, Jasper, Emerald) show the ignition cutoff relay but no indication that the lift motor is plugged into the TV outlet. I think this may be a drawing error since the 2003 Marquis brochure shows all models have drop down TVs and, to the best of my knowledge, all models had ignition cutoff relays for the front TVs.
Steve

[Fred Brooks]

   Eric,
  The way to prove that is to push the TV cover upward on the passenger side closest to the windshield after flipping the inverter breaker off and then back on (if the coach is plugged into shore power). The limit switches DO come out of adjustment after many miles of unknown vibrations such as wash-board dirt roads.
  I am having a hard time remembering how to get the headliner down to access the lift motor & transmission. Fred

[Fred Brooks]

   Steve,
It was a federal regulation to disconnect the TV if it was capable of being in the drivers field of vision. It always amazed me how we could afford to buy such an expensive coach and yet have the government protect us from being stupid! Fred

[Eric Maclean]

Fred
It's also setup so as to shut off the power to the Girard awning with the ignition on ,which means you have to remember to put the awning away before starting the coach. I wonder how many people have been stumped by the fact the awning wouldn't work. Lol

Eric

[Eric Maclean]

George
I read somewhere that some of those TV lifts had liniar actuators with a 120 volt motors and a motor capacitor if the capacitor goes bad the motor will only hum no movement.

This link has some information and some pictures as well as a video of a work around for a dead controller if that's what it comes down to.

https://www.monacoers.org/topic/1457-front-drop-down-tv-mechanism-in-2004-signature-will-not-work/