Does anyone agree with this or could it something else. Unfortunately
my manual says the schematics would be provided in the next update
which I don't have.

The only advice I can offer is to take apart and clean the affected parts. Use
a good aerosol circuit cleaner spray as there could be mineral deposits from
the flood water that can cause problems. You may also want to look around for
cold solder joints. You may also want to consider replacing the old coolant
and, if required, cleaning out the lens assemblies according to the
television's service literature, even if you don't see any problems. -
Reinhart