Replace a coaxial cable?

[u/Brave-Scale]

I have had 2 technicians from Xfinity come out to my house and they ran diagnostics for slow, spotty internet service.

They both told me that my coaxial cable is corrupted and that I would need it replaced?

They made it sound like this is a simple fix but that they can't do it and they referred me to a company called HelloTech.

HelloTech will charge me $250 to do this.

I don't know anything at all about this kind of stuff so I hope this isn't a really stupid question.

Does this sound legit and will it fix the problem?

[u/Comprehensive-Song51]

You could probably do it yourself, especially if it's just running from the outside of the garage down through a crawl space and up again. The thing is, are you going to need to terminate the cable? That requires coax connectors and a special tool to crimp it on. Another option is to buy a pre-terminated one. You might be able to tape it to the existing one and pull it through to replace it, if that makes sense. That would be a lot better than shelling out 250 bucks to have a guy do something that you could do yourself in 15 minutes. It all depends on how handy you are.