As an authorized service center for various manufacturers, I have access to all of the current service schematics, technical bulletins, parts, and factory support. As a legal business I have liability insurance in case anything happens to your equipment while in my shop.
Beware of anyone claiming they can fix your amp or keyboard if they are not authorized! There are unscrupulous people working in their homes who may not have insurance coverage or be authorized by any manufacturers. They may be less expensive, but if they do not have the support of the manufacturer, they may make matters worse and have no way to correct their mistake.
I have been a keyboard player since I was learning Blues piano at age 5 from my older brother. I learned to use tools at a young age. During my highschool years I played in rock bands. The primitive keyboards available at that time required repair almost on a daily basis. I started my experience working on keyboards with my Farfisa combo organ and soon bought a Fender Rhodes Suitcase piano.
I repaired most of the equipment in all the bands I had played in. At age 26 I started attending evening classes in Electronic Engineering at the local college in West Palm Beach, Florida. I worked servicing audio/visual equipment there for eight years. I moved to Raleigh in about 1987 and worked for Music Tech Services. I purchased that company in 2000.