Kishta,
I did a similar thing that you did with one of my T15s. After getting new ICs it all works fine. If you don't have a desoldering station (and many people don't) do what Tim said and clip the IC leads and de-solder them from there. But enjoy your T15s they're an amazing amount of pre-amp for the money - plus you get better at DIY for doing them!
Best,
GH