Xantrex rs 400 invert for tv trips breaker

Skidrow69

Member
Oct 10, 2015
47
Wasaga Beach ,Ontario
Boat Info
2009 350 Sundancer
Axius
Smart craft
Engines
2 X 496 Mag
B3 outdrives
Hi All,

I have a 09 Sundancer 330 with a factory installed xanatrex rs400 watt inverter for my salon tv.
This was ordered directly from the factory and worked well until this season when I have been doing
some work onboard. I have not done any wiring or anything to the inverter. I was working in the cabin and decided to
turn the tv on using the inverter. No shore power attached. Batteries are fully charged.
The tv turned on and in a abut 10 seconds the DC breaker on my panel for the inverter tripped.
I reset it again and it did the same thing. The only load on the inverter is the TV..nothing has changed.
I plugged in shore power and the tv worked fine.
The inverter also seems to be making an hissing/humming noise when it comes on which it never did before.
I reset the inverter DC panel breaker and the inverter and tried it again. Same thing..
I have looked at the troubleshooting for this inverter and nothing worked.
Can these inverters go bad?
Ideas to try?

Thanks
 
Hi All,

I have a 09 Sundancer 330 with a factory installed xanatrex rs400 watt inverter for my salon tv.
This was ordered directly from the factory and worked well until this season when I have been doing
some work onboard. I have not done any wiring or anything to the inverter. I was working in the cabin and decided to
turn the tv on using the inverter. No shore power attached. Batteries are fully charged.
The tv turned on and in a abut 10 seconds the DC breaker on my panel for the inverter tripped.
I reset it again and it did the same thing. The only load on the inverter is the TV..nothing has changed.
I plugged in shore power and the tv worked fine.
The inverter also seems to be making an hissing/humming noise when it comes on which it never did before.
I reset the inverter DC panel breaker and the inverter and tried it again. Same thing..
I have looked at the troubleshooting for this inverter and nothing worked.
Can these inverters go bad?
Ideas to try?

Thanks
Looks like the inverter has failed; not uncommon. On the DC (battery) power side there is an oscillator circuit that takes the Direct Current and converts it to a 60 cycle per second square wave form. The oscillator cycles these solid state switches (transistors) called MOSFET's on and off which perform the high current switching between negative and positive on the same wiring. If the MOSFET devices fail, which they do, then there will be a short and trip a breaker or blow a fuse. You could have someone repair it but anymore not cost effective..
 
Put in new inverter and the breaker still trips...well at least the inverter is a little larger..will have to troubleshoot now....
 
What size is the breaker? And what is the wattage on your TV?
 
Ok ,
I have tested the inverter outlets (3 in total) that are associated with the invert..all correctly grounded...plugged in the tv directly into the
inverter outlet...tripped the inverter main panel breaker...plugged the tv into another inverter powered outlet and it tripped
the main panel inverter breaker...This breaker is a 10amp breaker....but I plugged in a 100w light bulb into the tv outlet as well as the
other 2 inverter outlets and the bulb stayed lit without tripping the main panel inverter breaker. The TV is a LG 26 LCD and consumes approx.
45 watts. Seems like it is the TV...Can't see this but I have seen a few posts elsewhere where the TV is tripping home breakers....
Anyone have an more ideas?
 
I now have the culprit..It is the glomex antenna amplifier,not the tv, that is tripping the dc panel breaker...TV works fine without the tv breaker turned on in the panel..but as soon as you turn on the tv breaker
for the glomex antenna amp, the dc panel breaker trips...have to investigate further.
 
Ok, Pulled the glomex antenna and tried a quick fix with another tv antenna amp...this still tripped the mdp breaker for the inverter...pulled the amplifier off and just left the
bare dc wires..get 12v off them but when I turn on the mdp breaker for the tv/12Volt outlets and then turn on the mdp breaker for the inverter, bang the inverter trips...The inverter is wired to 2 ac outlets. One in the salon and another one in the cockpit for the cockpit tv. Both TV's work and stay on fine without the mdp breaker turned on for the glomex amplifier......
If I have shore power, the tv with the amplifer work fine as there is no inverter being used....
Running out of ideas. thinking that the coax which is carrying the amplified signal is grounding out..will try the bare dc wires from the amplifier with with no antenna coax attached..
Anybody have any more ideas????
 

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