Hard bricked. Feel terrible

Hey everyone, so today I was installing a rom on my friend's s3, and it turns out Verizon phones had a locked bootloader, so we managed to brick it. I've been trying to fix it for hours.

I finally found a way to fix it by using an external SD, so I was trying to format my external sd from my s4, in order to use for the bricked s3. I used an app called aparted.

Apparantly, aparted seemed to have deleted my phones partitions, not just the external sd card. Because now I cannot turn on my phone. It is completely unresposive. No odin, no cmw, no lights. I have managed to brick 2 phones in one day. I don't know what to do. Is this fixable with a jtag service? Are there any places that are trustworthy?

Thanks, and please give me some advice...

Hmm

I think I'm just gonna go for the JTAG. I went to a repair store where I live and he said the motherboard was broken.. I think he just had no idea what to do with it, since the charging light didn't go on.

I have seen some ebay sellers with good ratings, that say they provide JTAG service, for around 30 dollars.

These are cheaper than the 60 dollars from mobiletech. What do you guys recommend? Which one has less chance of scamming / more chance of unbricking?

thanks a lot!