Check you capacitors first to make sure they are bad.
923639
I had a friend replace all the capacitors on the board for me since I'm not good at soldering.  Unfortunately this wasn't the problem - the problem was the actual backlight - and replacing the backlight is crazy, it's better to replace the lcd - which this monitor is not worth doing.  before you order this check your capacitor carefully.  If they're not bulging don't purchase this.  But if they are then this should take care of the problem.
1502320
All the capacitor sizes are wrong. I needed 3 25 volt 1000micro f capacitors. There where no capacitors at that size.
3737905
First one was DOA, started the return/replacement process, we'll see if the second is any better. Depending on IF it works, I'll definitely update my review.
3451173
Just make sure your computer is able to take such a low rating. I've got a laptop that's kind of power hungry, but nothing crazy. The converter not only blew a fuse in my Porsche Boxster, but caused the laptop to become twitchy. Leading me to believe there isn't adequate fault protection inside this unit. The trackpad became jumpy and the windows was lagging horriendously.

I'm giving this a 3 star because it was a la fault on my end for not double checking with my computers specs, but at the same time the lack of an onboard fuse and what seems to be various other safety mechanisms gets this inverter a low review. I would imagine power surges and other electrical current inconsistencies could and probably will fry your attached electronics.
2696447
Before I would just toss the batteries, now I can test them to make sure it's bad.  Great price.
3697430
I bought mine a number of years ago, perhaps 2006 or so. It was a great addition to our tuner-less 27" Olivia TV. It had a decent guide and served us many years, until it didn't (2 days ago). After some research online, blue light is on for 10-15 seconds and then goes off, determined that it had a blown capacitor. I popped open the top and saw a bulged capacitor. I would have given it 5 stars, had it continued to perform. At this point, I am at a crossroads - to try to repair it, or just replace it. I am a big fan of over the air (OTA) television and buying a new TV seems good. Perhaps I will get a new TV, the Channel Master DVR+, or use my old Olivia with a video-streaming device. In any case, this is a decent Digital receiver, just be aware that it needs adequate cooling to prevent issue with capacitor. Mine was on top of DVD player, so it should have been fine.
707824
I bought two and one was DOA. I took the bad one apart, cleaned the contact and it worked after I put it back together. I'm using them as a pair on a boat and they sound fine.
4326992
My unit (a "basic black enclosure") was DOA. Not worth the bother to return it so I'm SOL. Avoid like the plague.
737880
Your probably looking a replacing your Samsung TV Capacitors...

After searching the web, reading online forums, viewing YouTube DIY videos I come to realize that my capacitor and everyother component on my Power Supply Board look completely fine. There are no blown or damaged parts, as far as I can see with my eyes. Understanding that my TV was not receiving any power at all I elected to change out the whole Power Supply Board. I found the replacement part here as it was not available at other online retailers. Paid $90 and took a couple hours of time. A local TV and electronics repair shop would have charge over $300 to diagnosis and replace the part.
3628817
1 battery have 1 bad cell...bad cell cannot reach required voltage during balance charging.  Will test out Venom warranty.
3176976
took these out of the box to install, before trying to install I decided to check them, checked the first set and they did Not work sending them back
3672372
I am an Old man, a note, that the " END Caps should be removed", ( the caps look like LED-s) this information need to be included in the bag!!!
I tried to plug it in, and did some damage to the receptacles. Also, that t should go in easly, if the plug is oriented correctly! Only one way!!!!
2741828
Mine showed up DOA but I have had dealings with them in the past and they work well, minus points here for QC.
2798665
Its a good deal and has nice features, but that doesn't do me much good when the capacitor doesn't work the moment I open the box.  As a result the camera would never hold a charge and all settings would re-set the moment it lost power.  To bad because for the price its a nice little camera.  Returned.
4789644
I am not sure about the quality of the capacitor. However, the packing of the capacitor is terrible. The packing (the original packing, not the mailing packing) is very thin. The first capacitor I received is dented. I had to return it and get a new one. The new one is dented as well. In the end, I had to use the dented one due to the hot weather.
1066634
First of all this device makes a lot of noise. It beeps continuously for about 30 seconds as the voltage drops below 11V or so, then it starts chirping and beeping intermittently as the voltage drops further.

In my case it would not stay charged. The voltage drop rate made it unusable for my application - it was about 0.1Volt/second from 12.7V and even faster below 10V. This is my first experience with large 12V capacitors, but I assumed that after being fully charged and disconnected from load and the power source the capacitor will stay charged for long time, several days, not less than a minute!

Can anyone recommend a capacitor that stays charged for long time?
2613721
The starting capacitor for my heat pump failed, Ordered this one, locked out the power to the heat pump, labeled the wires, and then did a wire for wire change out. Double checked my wiring then powered it up. Heat pump was back on line and I saved a $150 service call. Checked the amperage draw and saw that everything was in spec.