I have a spare Series 3 TiVo (model TCD652160) that is not being used. It works fine, but has no subscription to it & just sitting in a closet. I might be getting a broken TCD658000 from a friend. They claim (& think) the hard drive is the issue. I will pull the hard drive and run the WD extended test on it to see if it is truly the hard drive. If it's not the hard drive and rather the power supply, can I simply swap these two power supplies? I realize the Series 3 (OLED) can't be used in either one of these, but was wondering if the TCD658000 & TCD652160 use the same power supply & are interchangeable since they look pretty much identical. Now, if it is actually the hard drive that is the issue, can the 160GB hard drive from the TCD652160 be used in a the TCD658000?