Broke a string on a guitar i boughr used. I have no clue what size the strings were. Do i have to get a setup along with putting new strings on as ots kinda a crap shoot if they would be the same size.
I have a set of 10s im gonna try out first. If not shes going to the shopMy guess is that your guitar had 10's or heavier on them prior to changing them out.
Your fret buzz is due to the lighter gauge which also has less tension on the neck now creating back bow.
I would suggest taking it in to a guitar shop for a proper set up.
You can do it yourself if you feel comfortable with your skills.
Google 'setting up a guitar' and you'll find a lot of info and u-tube links showing how it's done.
It might be a good idea to watch a couple of vids just to understand what's involved.