Chosen Solution

While replacing the trackpad ribbon I broke the ZIF connector on the trackpad control board. Is it possible to replace just the control board or do I have to replace the whole trackpad? Any ideas where I might buy the board?

If you have the tools and the part to perform the job, it can be done, is more easy to find a donor computer that the single small part, if not: MacBook Pro 13" Retina (Early 2015) Trackpad