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Old 10-25-2018, 08:54 PM   #1
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2007 Dynsty Electrical issue

The RV has been parked with 50amp power to it for a month. Three of the four slide outs won't operate. Drivers side bedroom does. When I turn the ignition key on I get nothing, no dash instrument indicators, no transmission panel indications...nothing.

I checked the chassis battery switch and its ON. I put a charger on the chassis batteries thinking they are dead for six hours and nothing. The Aladdin system shows XXX for engine battery voltage. I try starting the ONAN generator but it won't start nor will the slide out for it work. Battery Booster doesn't work either. The start switches in the engine compartment are in the "Front-ON" position.

I can hear a very faint "PING" sound from just above the engine compartment Fuse/Relay box coming from a 12V unit that looks like a small speaker. It must be some kind of warning annunciator, for what I have no idea. (Having been around jet engines most of my adult life I say "faint" but it might be louder to most others.)

I suspect a relay is bad but don't have any idea as to which one is common to the three slide outs, ignition and generator.
Any ideas out there?
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Old 10-25-2018, 09:24 PM   #2
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Sounds to me like your chassis batteries are dead, they may be run down to where they will not take a charge.
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Old 10-26-2018, 07:18 AM   #3
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Is the salesman switch on? Magnum charger/Inverter? What does the remote say the charger is doing? When plugged into 50 amp, open the rear run panel, is the big boy relay warm? Do the batteries have water in them? What does the 50 A plug look like, melted? Does the transfer switch click when power is applied? Is the transfer switch hard wired or have a 50 amp connector beside it & is it melted? Is the power source good?

It is very difficult to suggest anything without volt meter readings. That is the first accessory every coach owner should get.
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Old 10-26-2018, 07:57 AM   #4
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I had a similar problem while driving down an Interstate! Engine died, instrument panel died, transmission indicator died, etc. Scary! Fortunately was able to coast to an exit ramp. Got out my voltmeter and started diagnosing. Finally found that my chassis battery disconnect switch in my battery compartment had failed internally (but looked fine externally). I disconnected the 2 cables from the switch and bolted the 2 cables together and went on my way. Completed my trip with no further problems. Eventually replaced the disconnect switch.


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Old 10-26-2018, 08:49 AM   #5
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Welcome to IRV2

If you have a volt meter see if the batteries are actually dead .
Most modern battery chargers will not charge completely dead
batteries .
The charger must detect some positive voltage in order to even
turn itself on .
Will the headlights work ?
They are operated by the chassis batteries .

I think you have 2 issues , the slides are probably separate since
one slide operates .

I have heard of the battery switches failing like CadillLinc said .

Ray
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Old 10-26-2018, 10:25 AM   #6
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Ok....I'm an idiot. The batteries are dead so that turned out to be the problem. I didn't jump it before because I had read where that could fry some circuits and be bad for the alternator. The RV service guy that came back today told me not to worry about that because its a new alternator and it will be fine.
I hooked up the jumper cable from the house battery POS-POS and the air bag pump kicked on indicating right away that was the problem.


Now the down side...My wife had told me to do that yesterday but I didn't want to out of concern that I would fry something. Now I have to eat crow and admit she was right! It wont be the first time though.


Thanks for the assistance and I'm sure I will be posting more as time goes on due to my inexperience.

Gundog55
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