Re: Advise on dead bike!
Check your magneto with an ohm meter and see if it reads between about 350 to 550 ohms... if it does, it's good, but if it reads as a dead short (0) ohms or if it don't give a reading at all it's bad and needs to be swapped out... this is very common.
Check your spark plug boot also since these are made cheaply, an automotive wire and boot fix that problem
The cdi can be checked with a meter and there is a post about it somewhere in here so try searching cdi test or ignition test and see if it pops up.
My guess is that the mag coil is what went bad