Storage mhl adaptor for note, s2..probem

i have to solder the mhl cable to the mhl ic. how to solder? i bought a mhl adaptor from china but it is not working since the first day 100% ( maybe 50% ) cause of the bad soldering. so i unsoldered it and now i need the mhl schematic or datasheets. which pin to solder i already know but there are two ground cables ( black and grey). can anyone fix my problem?
Details
the micro cable has to solder to the ic. but one or two cables i dont know to connect with which one. i think thats the ground not the black but the silver cable. if anyone opens his mhl adaptor so he can help me. i bought it from dealextreme. dx.com. maybe they will send me a new one may be not. we will see. but i cant wait till they will shipping. it will take at least 2-6 weeks. no more chinese products.
thanx folks