I think im hard bricked

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http://androidforums.com – I was running CM10 stable at first. so i was on google and happen to see 4.2.2 stable cm10.1 for the t989. I just had to flash it. i spent 3 hours reading and watching videos on how o do it correctly. First i did darkside wipe, then i flashed another kernal ( the one for the att version i think) and installed the t989 rom and the gapps. the phone flashed a blue samsung logo for 2 seconds then it just went black. it wont turn on,vibrate,charge,or anything. i have a feeling I've been hard bricked. Is there any way I could get it fixed? I read online about jtag service but i dont have $50 t (General)