i have a sony trinitron model number kv-x2521u and the image just randomly cuts out but the sound still works (usuallt fades out within a couple of seconds), sometimes it helps to turn the tv off then back on again but not always. and other times it will just fade back in again. Is there anything i can do to fix this or is the tv knackered?

Robert, September 2005

PS. In your case sounds like the first dry joints to check is to the tube heater supply.

Cobweb, September 2005

Very commonly suffer from multiple dry soldered joints.
To access them all, the main board needs to be removed from the plastic chassis and checked all over.
Also, need to check the Tuner & I.F. board for same.
Should be carried out only by a qualified engineer as it involves a fair bit of disturbance to the TV, removal of plug/socket connections and wire looms. Done loads of them and takes about an hour to complete properly.

Cobweb, September 2005