Cleaning a Trumpet?

General tips and specifics for black spots of ? on my trumpet. I have a silver trumpet

Cleaning a Trumpet?
Do not use silver polish. The black spots sound like they are places where the finish has worn off. Take it to the repair shop and ask if they can fix the black spots before you do more damage.
Reply:Tarn-x works great on silver
Reply:A good internal cleaning will keep your trumpet sounding great.





Step OneReserve the bathroom or any other room with a tub and running water. A large wash tub and a water hose in the back yard will work fine if it's safe from the curiosity of your pet dog.





Step TwoSet up a work table near the tub.





Step ThreeClose the bathroom sink's drain, and place a 2- or 3-foot-square piece of plywood over the sink.





Step FourFind two Turkish bath towels in good condition. Avoid using worn towels with holes or tears in them.





Step FiveFold one towel twice or more so it will form a thick pad to protect the valves and delicate tubes of the instrument.





Step SixPlace the towel on the bottom of the bathtub. Be sure it covers the drain hole.





Step SevenFold and place the other towel on the tabletop or the plywood covering the sink. The work area must be clean and supply cushioning.





Step EightFind a comfortable chair or stool.





Step NineMake sure that the light sources are adequate.





Step TenGet a gooseneck halogen lamp that will illuminate the interiors of small parts.





Step Eleven Fill the tub with 6 inches of lukewarm water and add a 1/2 cup of mild liquid soap.





Tips %26amp; Warnings





Check the trumpet to determine if all the parts are complete, undamaged and intact.





Blow through the instrument, depressing all three valves, to discover any blockages.





Put a clean wash rag in the end of the bell to seal the air chambers.





While blowing to create some air pressure, open and close the main tuning slide spit valve to determine how well it prevents air leakage when under pressure.





Press the third valve, blow air, and open and close that spit valve. Does it seal? If there is leakage, fresh corks should be installed.





Remove the rag in the bell and produce a sound, if you can.





Run a chromatic scale. Listen for the half/step note changes for accuracy and quality of tone produced. If there are leaks in the valves or the tuning slides, the tone quality will be inferior and compromised.





Used and old instruments can harbor infectious bacteria. Be careful about how quickly you place your lips on old or used mouthpieces. Disinfect them using an alcohol soak, or use your own mouthpiece.





If you are checking an instrument for potential purchase, be sure all the slides and valves move and function with ease. Dented slides and "frozen" slides are expensive to replace.

Electrical