This doesn't sound like a CFW issue, at all. Your PSP is not bricked.
Your having hardware issues. Either your charger, battery, or possibly charger port isn't working right. Troubleshoot this by trying the cheapest options first. AFAIK the 3000 can charge via its USB connector, so try just hooking it up to your PC and see if that does anything. Then buy PSP USB power cable, those can be found online for $1 because it doesn't need a power brick, it's just USB to a power connector. If that doesn't work, buy a new battery, they'll set you back like $10 for some Chinese copy (real ones no longer exist, old unused ones are dead).