RV guys I need help

[bow slayer]

I have a tent trailer . I have noticed then when I hook up the hydro everything works but the transformer in the trailer fan does not come on. After a few minutes with the power on the transformer starts to make a squealing noise.Still everything works but the transformer box starts to get hot. I asumed it was the fan that died,but I pulled out the box and replaced the fan and the exact thing is still happening. Is it the circuit board in the teransformer ? Do I have to replace the whole transformer?

 

If anyone knows of a site that could answer my questions please post thanks.

Edited June 28, 2009 by bowslayer

[Fisherman]

Okay, I'll try, couple Q's first, how old is the unit, what's the brand name on the converter, do you have a GOOD battery hooked up at the front. Some of the older units require a good battery to be hooked up otherwise the converter goes into warp drive. It appears by your description that the converter is trying to power "something" that's taking a lot of power and then causing the overheat.

There most likely is a circuit board, but whether it's a modern 3 stage unit or basic 13.8V DC battery burner depends on age of the unit.

Edited June 28, 2009 by Fisherman