Need to put tv on video 2 mode to use ps3 and no remote
Have you tried running through the channels until they wrap around and start over again? Alot of TV's will throw the AV inputs in there before the first broadcast channels.
If not (and you're gonna hate my answer, but be kind to the messenger please!), you may have to purchase a new remote control from the manufacturer, which can be exorbitantly priced. Most 'Universal' remotes will act just like your Dish Network remote, and you will probably not be able to use any of your set's advanced functions through them.
I would recommend searching the web for the appropriate replacement remote control, you may get lucky on eBay and save a few bucks. Hope this helps!