My Macbook is blowing the fuse in its charger?

My macbook broke a few weeks ago, It wouldn't turn on got it fixed recently and turns out there had been to much pressure on the top board. The other day while charging my macbook I noticed that the light was turning on and off as it charged, it became really slow and eventually ran out of battery. I noticed though taht once turned off it charged perfectly. Nextday after being nearly fully charged I was using it again started to run out of battery so I plugged in the charger same thing, only this time the charger broke completely. It was working again this morning so I replaced the fuse, worked perfectly and light wasnt flickering I opened up the lid and turned it on and immeadiately the light turned off and started flickeriung.