[The Mothman]

My xbox 360 has already broken once. 1 and a half months + $150 later it was fixed. Now i just started getting the red flashes, it wouldnt turn on. I started looking online for a store that would repair it, because i dont have a month and a half to wait. 10 minutes later, it started working again. I havnt turned it off since, so im not sure if its going to stay working, but does anyone know of any stores that would repair an Xbox? Price is not as big of an issue.
this Xbox was used and bought off of amazon.com, im not sure if that changes anything or not.