To be clear, the only thing you've done so far is the cap kit? Was it working before the cap kit? If so, double check all the installed caps, for correct rating at their installed locations, and for correct polarity.
If the only thing you've done is the cap kit, and it was working before but not after, then the cap kit is your cause. It is possible you damaged a trace, lifted a pad, or caused some deeper problem as a result of the work, but the most likely culprit is incorrectly installed cap(s). Been there myself more times than I'd like to admit.
