From your description it sounds like a yoke problem, you describe an hour glass picture which is a classic symptom of the horizontal sector of the yoke is at fault. The easiest way to test for this is a ringer tester, chances are it will show a short in the horizontal winding which causes the high voltage to load down and draw more current in the process.
Sounds like no east-west correction to me, if the raster lacks width as well. The circuit governing this
should be checked, including the EW transistor(s) as one or more may be
short-circuit.
East-west correction is part of the horizontal deflection stage so I would advise the yoke circuit be checked also (for suspect components/dry joints etc.). Hopefully the yoke itself is not the culprit.
You can always get a third opinion here, and ask a service technician to visit you, examine the on-screen raster, it may require a workshop repair though. Or you can take the set to them. If this happens to be the case, ask for a quote, then you can make a decision afterwards. Up to you.
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