The Nissan Path

I have replaced both ac and alternator belts and tensioners on my 1998 Nissan PF. Using GATES Belts.
Still have a horrible loud squealing that changes when I turn the compressor on/off. It never really goes away.

So i figure maybe the bearings in the ac compressor?

Only other things left are the alternator (alternator man said he doubted the bearings were bad in it after listening to it), power steering pump, power sterring belt. Sometimes turn the wheel sharply changes the sound of the squeal.

What would you do next? car has almost 200,000 miles. Anyone had similar issues? I have never had such a time tracking down belt noise before. My mechanic put a dab of grease on the belts and that didn't help it..........

thanks

ya, it sounds like the barrings on the ac or such are out.