Also ,ake sure that the crt socket board had not just slipped down so it is
not making proper contact with teh base of the CPT. Seen a lot of Toshibas
exihibit that failure for some reason. Again if you are not sure than have
it professionally serviced.
wrote in message
oups.com...
The tv needs troubleshot to find out why the blue is missing.
Start at the blue tube and make the voltage and waveform measurements
on the crt socket and work your way back to where the OSD, convergence
test pattern, and video are combined before being sent to the three
picture tubes.

Not sure what this means?
Call out a qualified and trained technician to perform a proper and
safe diagnosis and repair on the set.