OK, let's back up and reassess the situation.
1. What do you mean buy "My DISH Network Box in the Living Room isn't working"?
Which Dish Network receiver do you have? There should be a receiver name on a label on the back or a name or a number painted on the front.
Does it not power on, does it not show any programs, does it only show a few programs?
Does it display an error message on the screen of your TV.
Is the satellite receiver properly connected to your TV?
Is your TV tuned to the input form the satellite receiver?
2. What makes you think replacing the dish would fix the problem?
Is the dish physically damaged?
Is it still pointed the same direction it always has been?
Are the cables still connected to it?
Have you loosened and re-tightened the cable connections?
3. Except for old equipment, the Dish Network feed horn is different from a DirecTV feed horn and, for the most part are not interchangable.
How many "eyes" does your current feed horn have? For California you should have 2 (for SDTV) or 3 (for HDTV).
Most likely, it is either the receiver (box) that has somehow failed or the feed horn (lnb), not the physical dish itself, unless it is damaged by wind or flying debris.
Both are easily replaced after proper trouble shooting.
A replacement box from Dish will be free, if you buy one somewhere with a feed horn that may or may not work, it may cost more than the $95 Dish Network tech visit.
A replacement lnb from Dish network is free, if you buy one, be sure it is the correct one for your application - the price is around $50.
My recommendation is to bite the bullet and have a Dish Network tech visit.
If you speak to a kindly customer service rep, they might even waive the $95 fee if you have been a long time customer and have a good payment history (no guarantees).