What brand and model of adapter and who did you buy it from?I have two Directv TiVos. An R10 and a DSR704. The 704 got a new hard drive in August and the R10 a couple weeks ago. The R10 wouldn't get past the Welcome screen so I ordered a power supply. Turned out the adapter that came with the drive was faulty. But both machines are expierencing lots of restarts. I just had 4 in an hour on the 704 so I started watching the R10 and it restarted (Twice now within 20 minutes). It's really getting annoying. I don't know if I should spent $70 on a power supply for the 704 or what. The only other thought I had was putting surge protectors on them. I thought maybe a power spike might have something to do with it but it's just a thought. Any help would be greatly appreciated. I'm quite the tv junkie and this is really harshing my mellow.
Look at badcaps.net and look at wikipedia's article on "capacitor plague" and then inspect the capacitors in your power supply.