I had the power go off and come back on when I was not home. My FIRST best guess is the fuse in the transformer or the transformer is bad dbx 286A
1046740
Make sure tfirst that your outlet or breaker for the outlet is reset and that you have power. also see if anything else in the house was blown. power going off and on should not hurt the unit. A power surge would. I am not sure about the fusing of the system but I assume there is one in the internal transformer. Since I do not know your expertise I am not sure what to recommend but if you are not a technician and the unit has been plugged into a live outlet then take it to a local radio or electronics shop and have them look at the power supply.
1046741
The fuse is only for protection there is another problem that cause the fuse to blown , Technician must see the unit
162413
The transformer has a minimum load needed to function properly, I would use a volt meter to be sure the switch breaks the hot, and double check the polarity.
1552562
Check: 1. power cable, might be an open in the wire or plug. play around with it then plug it in; 2. the on/off switch could be bad; 3. power supply may have died. #'s 2 & 3 is going to require a tech, unless you have the equiptment to do continuity checks. Good luck.
216240
Mine wouldn't turn on, either. A quick check of the fuse--located inside a small pull out holder built into the electrical plug connector--found the problem to be a burned out fuse. Weird, since this unit was sold as new, but there was a spare fuse in the holder that was still good.
409751
Because something is wrong with transformer, or with the way you use it. In normal use and if unit is in good condition, it is completely silent.
1940680
check your cables, try to isolate the source by switching them out. i find a power conditioner works a lot better than a multi-plug. if you can't find it, i would consider return them for replacement.good luck
939161
Coby puts terrible power supply units in their sets, yours has probably gone bad. They need to recall this set as well I have a similar issue with it where if I let the unit fall asleep it will refuse to turn back on until I unplug it for ~30seconds, maybe try to unplug and let the capacitors drain (leave unplugged for 30-60 seconds). Good luck!
1806658
I'm also in the same problem. Anyone have A home repair solution? Prior to this I had the power on problem which was solved by upgrading some blown capacitors.
1881277
I had a similar problem, I let the unit on until it was completely out of power than recharged it. That solved the problem.
113508
Sound like there is a short circuit. Check your wiring, be sure none got pinch.
142252
You might try unplugging the unit from the wall socket , wait a few minutes then plug it back up.
551197
By power goes off, you mean like a power failure? This is a transformer, it changes the voltage for the appliances to work. If there is a power failure this fails too as this does not generate power.
1827465
Are you running it off the correct mains? Mine was doing this until I installed a transformer.
700982
There is a voltage issue, sadly. You need a step-down transformer, which is what I use.
1146407
You have no power to your outlet. Check your garage or other outlets for a gfci protected outlet that has tripped.
1217632
Unplug it for a time and plug it back in. If that doesn't work it sounds like it is defective.
1546391
You may need to change fuse. I had to do that when I first got it. Been over a yr now and going strong. Good Luck