Disconnect the Satellite input coax cable from the receiver, and then try turning the power on again.
Sometimes over time things will happen to cables that causes them to short out (ground to center conductor). If this is the case, your receiver was trying to protect itself from that shorting situation by powering down.
If it works after this test, bring it out to the dish, with a short RG-6 jumper cable connected to the LNB, and a TV set to monitor response, and power it up again. If it fails, you probably have a shorted LNB and may need to replace after further troubleshooting. At this point it would be a good idea to use an ohmmeter to see if the coax beween indoors and the dish is shorted. If you have a coax that is pushing more than 25 years old, it's probably a good idea to replace anyway, even as a backup cable. IF none of the above steps result in getting your receiver to light up when powered on, you are probably going to have to repair the receiver's power supply. In your remote location, check locally and see if anyone has a working C-band receiver that could be used to move your dish. Then go shopping for a good MPEG-4 Free To Air receiver and a new C-band LNBF to replace old LNB and feed system, to get into the digital age. We have sponsors on the Satellite Guys website that will be happy to provide advice and product. Casey at Hypermegasat, Michael at Michael Electronics, and Brian at Titanium are all good people to contact. Good luck!