Camera Won't Turn On

I bought my 500d second hand a few weeks ago, seller said he’d lost the charger i bought the camera without testing since it was mad cheap and i had money to spare. got the charger and a battery and camera is totally bricked when i switch it on no sign of life at all. if i manage to fix it it’d be great, the kit lens zoom was also stuck i fixed it myself

+ Tried pushing the battery lid switch and turning it on did not work

+ Tried without SD card / Lens

+ Batteries are working