Hello a friend got me a Powercube as a Christmas gift and suddenly the USB supply did not work anymore...
At first i tried disassembling it and i found a cold solder joint in one of the diodes. Then i got it working till today when it fell from the table... i cranked it open once again and i can not find any problem.
I measured all the diodes with my multimeter but i could not find a damaged one....
The IC is a OB2536AP (datasheet attached)
Please help to track the cause of the problem.
When i connect a device to the usb port i usually heard a noise coming from the transformer i suppose.Now the sound is gone.
The thing written on the transformer is RM6H-112-4 or its a "B"like BM6H-112-4
anyway i could not find a datasheet of anything....
Photos
http://postimg.org/gallery/3ivyiw4b6/Schematic : I could not find one if you want to reverse engineer it and post the schematic tell me.
Thank you in advance