Is this phone dead? - Galaxy S III Q&A, Help & Troubleshooting

Hey guys,
I'd a Galaxy s3 before changing to an M8 this year, the s3 was rooted and had Lightening Rom (I think) when I changed phone I gave the s3 to my sister and about 2-3 weeks later she complained that it wouldn't turn on, I fixed this by using Odin but the IMEI changed to the generic 0049, now I know there's a million threads about that but that's not the problem, I never reset the binary or anything on the phone but when I gave it back to her it would turn on just no signal, she decided to hand the phone into a "professional", I don't know what the guy did hence why I'm posting but is this bricked? It will go into download mode and can be recognised but cannot receive anything.
TL;DR - Phone had IMEI problem (0049) was sent to repair place and came back with this on the screen it will go into download mode and can be recognised but cannot receive anything
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Sweegy said:
Hey guys,
I'd a Galaxy s3 before changing to an M8 this year, the s3 was rooted and had Lightening Rom (I think) when I changed phone I gave the s3 to my sister and about 2-3 weeks later she complained that it wouldn't turn on, I fixed this by using Odin but the IMEI changed to the generic 0049, now I know there's a million threads about that but that's not the problem, I never reset the binary or anything on the phone but when I gave it back to her it would turn on just no signal, she decided to hand the phone into a "professional", I don't know what the guy did hence why I'm posting but is this bricked? It will go into download mode and can be recognised but cannot receive anything.
TL;DR - Phone had IMEI problem (0049) was sent to repair place and came back with this on the screen it will go into download mode and can be recognised but cannot receive anything
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I would take it back. When you say it can not receive anything you mean Odin fails?
Can you get into recovery?