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Anonymous Posted on Feb 17, 2012

My duralast inverter 400 watt beeps when plugged into the computer

5 Related Answers

Anonymous

  • 242 Answers
  • Posted on Oct 24, 2008

SOURCE: power inverter

Most likely a fuse. Check for a fuse on the inverter itself or one inline with the plug. Usually you can screw off the tip of the plug and replace the fuse inside.

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Anonymous

  • 1 Answer
  • Posted on Apr 16, 2009

SOURCE: Power inverter

Some inverters will not work plugged into a standard lighter port. I had to wire an outlet direct from the battery, using #6 wire and a 30 amp fuse and all has been fine.

VP
TN

Anonymous

  • 26 Answers
  • Posted on Oct 22, 2009

SOURCE: 2nd season with 400 watt vehicle 1024 inverter. The

These inverters are notorious for this. Like the previous posting, it is probably a bad capacitor or other component. Try to keep them unplugged when you start the vehicle. The power outlet gets a jolt of DC voltage on startup. I recently bought the one below and it has been working great for quite sometime: http://batteryinternational.com/400-watt-power-inverter.html

nitrospawn

Ibe Chukwudi

  • 290 Answers
  • Posted on Feb 27, 2010

SOURCE: 400 watt inverter Alarm sounding

test the battery if it is still OK

tmorosco

  • 1 Answer
  • Posted on Sep 21, 2010

SOURCE: Cant find the fuse on a black and decker 400 watt power inverter

I've had this inverter for about two years now, bought it for a cross country road trip to power my laptop and a couple of other things. I've pretty much liked it. Yes, the fan is a little noisey, yes, you have to use the provided battery clips for heavy loads. But it powers my Dell Inspiron 8500 laptop just fine (and its an old powerhog).

Recently a I let a friend use it with his inflatable mattress air pump during a camping trip.
What I didn't know is his pump has insane wattage, and it fried/bricked the inverter instantly.

Agh! I thought it was a goner, but took the time to look inside the unit. (Which is a solid and sturdy metal case, not plastic as another reviewer indicated). I was thrilled to discover there were some internal fuses. And while the fuses are soldered to the circuit board, if you've done any soldering at all they really are a snap to replace.

If you remove the four screws that hold the end cover plate on the side with the fan. You can remove the end plate and have just about a half inch or so of clearance. The entire lower circuit board will then slide out with firm pressure about an inch and a half (don't try and go any further, components on the other side prevent it).

On the right side (positive/red terminal side), you will see two 25 amp mini-fuses that are directly soldered to the circuit board. If these are blown (you can see through the semi-transparent sides if they still connect), that is most likely your problem. They are easily available from most auto and big department stores (Walmart, Target, etc) in their automotive sections.

I used a 40 watt soldering iron (30 watt should work fine), and applied it to the bottom of the circuit board where the fuse legs poke out the bottom. Using a pair of pliers, I applied a firm steady pressure to the fuse, pulling up, while applying the soldering iron to each of the legs (alternately) of the fuse. The solder melted, and I was able to work the fuse out in a few seconds. I did this for both fuses.

The replacement fuses cost all of $2. I dipped the new fuse legs in flux, then put them in the place of the old fuses. Again I heated the circuit board solder from below, and pushed the new fuse in place. Repeat with the second fuse until it is in place. Flip the board over and add some more new solder until it is firmly in place. Put it back together, and you are back in business! And for a whole lot less than a new inverter.

I've got pics of this process if anyone would like them. Good luck, and happy inverting.

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I am running a Whistler 400 watt power inverter and have issues with the Isuzu lighters urning out wires or blowing the inverters. I am running an PH mini computer with touch screen and a Start micronics...

If the inverter is blowing your vehicle's lighter socket fuse, does it do it immedately or only when you try and operate a device? If its when you operate your device, it may draw more than 100-150 watts. This wattage is the limit for most lighter sockets. Double check the devices power requirement.
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Overloaded my inverter -now only works when hooked to car battery

It sounds like the fuse that protects you cigarette lighter is blown.

After you have replaced the fuse, check the voltage again. 0.015vdc would not have powered anything that in manufactured to operate on 12vdc.

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2nd season with 400 watt vehicle 1024 inverter. The

Restating the question - 400 watt inverter is turned on and running with the vehicle turned off.
After starting vehicle the red light of the inverter is on with no power output from the inverter.
If you turn the inverter off then on inverter operates normally.

Solution - this is normal operation - my inverter does the same thing. When you start the vehicle
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Motor trend 2400 watt inverter has 147 VAC from both hot and Neut

Assuming you are testing alternating current and not direct current that sounds quite normal. Plug with confidence. You are using equipment designed for 110v-120v and you're getting 113.8v where it matters most. Higher voltage to ground is nothing unusual, that's just how this inverter is designed.
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