16 year old tv. Check the back of the set for two adjustment holes. One will be for focus, the other will make it too bright. See if you can adjust the focus any better. If not the picture tube is probably toast.
A loose connection is usually oneof the easier repairs to make, but not always. (Especially if it is in the shadow mask). Easy money. Turn the board upside down, remember it is very fragile and will shock you. The big red wire will hurt bad. Try not to unhook any wires if you don't have to but if you do make sure you know exactly where they go. I use a sharpie sometimes. A good light and look closely at each and every solder joint, starting with the larger ones and you will be able to see any obvious cracks.Keep your tip clean with a wet sponge and resolder any suspect connections. Inspect your handiwork very closely and if you bridge two joints together remove the excess solder with solder wick. Reassemble and tap on the board to verify no bad connections. If there are, repeat :o)
But the first thing you should do is read read the faq. Sam is The Man. Good luck. Scott