Question about Inverter Electronics - Others
Posted by Anonymous on
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Posted on Jan 02, 2017
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.
Posted on Oct 24, 2008
I have a background in electronics so i hope i can help. Now after reading this i have the feeling this item does not put out 2000 watts cause if that were the case it should draw somewhere near 147amps. This is because to find out amps you need to take the 2000 watts and divide it by 13.6 volts (assuming what the vehicle runs at) that gives you amps. watts/volts=amps.
Posted on Apr 02, 2009
DO NOT DO THIS! If I understand you correctly you want to have three ways to have 110 power in your motor home--- (1)Vehicle 12V to inverter to main panel. (2)Generator to main panel. (3)plug the main panel into 110V. If any two of these are connected at the same time and they are both live, somethings going to blow. That's because with AC, the two sources must be synchronized in their cycles very precisely. The utility company connects their power plants together on the grid only with the aid of precise controls. But the really serious problem is the same reason they invented transfers switches for home generators -- if you were connected to (3) and the power went out, and you connected (1) or (2) without disconnecting the dead (3), you will backfeed power to the line outside and you just might kill the lineman who is trying to fix the power outage.
Posted on May 20, 2010
SOURCE: power inverter
There are 8 40A fuses inside this unit. In the following pics you will see a bank of 4 and another bank with 3 of the 4 removed. I'm currently working on mine as it will cost me more to ship and have Cobra repair than I paid for the unit ($133 to repair). Good luck with your problem
Posted on Aug 24, 2010
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.
Posted on Sep 21, 2010
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