Damper felts should be replaced when they become hard and noisy. Sometimes they then stop functioning and notes continue to sound after the key/pedal has been released.

The damper levers may also need to be refurbished or replaced if the parts have become worn (causing them to become noisy) or if they have seized up due to high humidity.

Sometimes the action frame can fail and split causing flex and unwanted movement in the action. This can mean unstable action settings and irregular touch feel. New rails can be fitted to correct this.

Replacing hammers can be necessary. 

The hammers can get worn and small after substantial use. The levers may also become worn and noisy or parts can seize up altogether in high humidity.

To resolve this they can be replaced or refurbished.

When needed the keys felts can be changed. Over time they get worn at the pivot points as they run along the guides pins becoming lose and noisy. They  can be replaced when worn. returning the action and keyboard to proper working order.

I encourage customers to interact at the final stages of restoration and implement their preferences regarding tone and touch

The pedal system operates levers called trap work. These in turn this operate the dampers they can be overhauled by replacing felts and leathers at friction points to ensure that it are no longer clunks and squeaks as pedals are operated.

The Dampers control the way the sound is sustained after a note is played. Faulty damping allows unwanted sounds. Set up correctly damping is responsive to pedaling. This is very important for control of musical phrasing.

The soundboard is core to a pianos sound.

It acts as a diaphragm membrane and amplifies the sound from the strings.

It is important it is not damaged by heat or humidity as this can result in the lose of it's convex shape.

Soundboard damage can often be repaired but this requires special skills.

The board can be stripped and sanded.

Splits can then be shimmed, Pieces of soundboard are cut to wedge shape then wedged into the splits and cut off flush to create an unnoticeable repair. 

Bridges can split in the capping usually through the bridge pins. They must be recapped and re-carved in order that the pins don't buzz.

Then the soundboard can be re-varnished.

Service plans are flexible and can accommodate the requirements of the client so that they taking into account individual budgets and you can befit from improvement of intermediate work.

I spent 11 years of valuable time restoring pianos for steinway london the knowledge gained in this time is central to the way i work.

My ethos is to restore as near as possible to manufactures original aspiration the use of genuine parts is always my first choice.