Personally, I wouldn't bother replacing the transistors unless you know they have a problem. When you did the caps, I hope you used hi temp (85c or higher) capacitors of a very good brand such as Panasonic or Nichicon. Regular cheap electrolytics will probably not last.

I've never studied the circuits inside the CCU up close, but I would not be surprised to learn that there are a lot of close tolerance parts in there, and possibly matched components. Replacing anything other than caps might be an exercise in futility, or worse.

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-tp


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