I agree with vol2. That is a nasty crack & I bet there is another.
One thing may help also. Try every input you can & see if any work.
To trace the video you really need a scope, with that it can go fast.
Voltages usually wont help unless one of the video or switching IC's
are missing VCC. Beyond that cant help much. The chassis is nothing
like the US models. Last one I worked on came from Ireland & despite
being 1/2 Irish I never got it running right !!
Bridging the break with wire is good BUT with the fine traces doing
that can drive you to the bottle
Good luck
Zeno
LFOD !