Can anyone help with this problem,

Checked out this 56" set it had blown a 5 amp fuse so I replaced the fuse.
Now the set works fine, but the convergence is all screwed up, where should
I look to find the problem......is it in the convergence board ?? or the
main board ??
What voltages should I check for ???

I have serviced tv's for over 10 years, not overly familiar with rear
projection and the convergence circuitry. I have a good idea how it
functions, though.

Thanks
James