I plugged the usb cord to the computer to charge the on off because it just would not turn and it turned on while the usb was connected from the tv to the computer then when we put it back to the cable box it would not turn on does it have to charge for a certain amount of time
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Follow the solution for service port 'jump start' with a usb plug. Plug your cell phone charger in next to the TV. Touch the metal prongs of the service port with the metal part of the usb until you get a brief 'flash' on the TV. Then turn on the tv set. It takes patience and a flash light to do this, so you can see what your touching, as my husband couldn't get it to work, but I could.
gary, thanks so much for taking the time to reply. i tried the USB gig but no luck. how hard is replacing the capacitors? i am fairly handy. where do you get new ones? this will be my last olivea! these are junk. my first one went out and i sent it back. took them 3 months to send another. it last 2 months and now it is dead? major pain in the ***!
I have a 24" Olevia LCD TV. Same symptoms (Stdby LED is on, press power and it flashes off, then back on). The USB cable to the Service Port also worked. But being of sound technical mind, I figured this means that the PC is supplying the +5v to the circuit. What I did was disassebled the TV, carefully disconnected all the cables, and opened it up to reveal the circuitry. I looked over the circuit and noticed the 1000uf/16v capacitor at position CS21 was failed and bulging. I removed the cap, tested it and verified that it was indeed failed. I went to a local Radio Shack and picked up a 1000uf/35v electrolytic, after all, the value is what mainly matters as long as it's not lower voltage than the original. I replaced the new CS21 capacitor back in the circuit (it is polarity sensitive, so pay attention to what the original mounting position is). I reassembled the TV and Viola! Works! No need for the USB cable to the Service Port!
Follow the solution for service port 'jump start' with a usb plug. Plug your cell phone charger in next to the TV. Touch the metal prongs of the service port with the metal part of the usb until you get a brief 'flash' on the TV. Then turn on the tv set. It takes patience and a flash light to do this, so you can see what your touching. This will not turn on the set. You still have to do this yourself after the flash.
If you are just trying to 'jump start' the tv to turn it on, get a usb cable, like the one you use to charge your cell phone. Touch the metal part of the service port, the 8-pin mini din witht he end of your charger cable that is plugged into the wall, until you see a flash on the screen, then turn the tv on like you normally would. It should turn on. If it doesn't jump it again.
If you want to see photos and a description of the disassembly process and commentary on my repair job, soldering in the new caps, etc. I've posted them online for anyone interested in tackling the job themselves. I've never cracked the case on a TV before, but thanks to some of the hints here, and some efficient Googling, I was able to fix my own set with a screwdriver, pliers and a cheap soldering iron, all for less than the price of a pizza. http://www.flickr.com/photos/geegee123/sets/72157607269121264/