There is no 'right' or 'wrong' way to play my man. If you are competent, and even with your attack with your current method, stick with it. Anyone that says 'you are doing it wrong' is an a55hole.
Sounds similar to an issue I had with my Ashdown. It turned out to be a smoothing capacitor. Cost 30 GBP to repair. Hopefully yours will be something simple too!