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Old 09-09-2014, 06:22 PM   #1
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alien_scones's Avatar
Join Date: Jun 2012
Location: Colleyville TX
Posts: 106
Question Are DC converters adjustable?

Are DC converters adjustable?

I suspect the DC voltage is a little on the high side.

I don't have a multimeter yet.

I have started to swap out the incandescent lights with warm LEDs.

After replacing the lights, I noticed that the warm LEDs quickly turn into the colder bright blue-white 10K spectrum, and minutes after that they begin to diminish in brightness and emit smoke. The LED lights are uncharacteristically very hot to the touch, and in some cases cause the attached backing tape to melt.

Some of the fixtures look like the previous incandescent lamps burned a little on the hot side.

It's on all the fixtures so far that I've replaced.

Should I be planning on replacing the converter or is there a quick adjustment I can make? Or is a bad battery causing this?

This is for a Thor 2001 Citation bumper pull 26S.

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Old 09-09-2014, 08:30 PM   #2
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Join Date: Mar 2011
Location: Gaylord
Posts: 27,154
Look carefully at which LED's you bought. Some LED's are rated at 12VDC. They are not compatible with voltages higher than that. Most (no, all) RV converter/chargers routinely charge batteries at 13.6 volts (higher than the rated LED voltage of 12 volts) Many of them will simply not function at higher voltage and like a fuse that carries too much current, they burn out.

"RV compatible" LED's should be rated at 12-24 volts. Most of them have a built in voltage regulator in the "chip" others have an "add on regulator" mounted on the assembly. Either way, the voltage is always "reduced" to 12VDC and the LED's are "happy"

You've probably got some "unhappy LED's" Check the specs on the website for the LED's you ordered. I'm pretty sure they will have an annotation that the input voltage is "12 Volts DC". Look for replacements that are listed as "input voltage 12-24 Volts DC"

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