I recently replaced the power supply on my Tivo HD TCD652160. The new one I put in was identical to the one I took out only the capacitors were good. I then found a complete unit on Ebay that came from a highly rated individual, and I got it for a fraction of the price I paid for just the power supply, even though I got a fair deal on the new power supply also. The question is, the power supply in the complete unit is very different from the one I took out and the new one I put in. The foot print is the same but the arrangement of the capacitors, cooling elements and coils is not at all like the other two and I was wondering if anyone knew what was the reasons for the two different power supplies? Is it simply just different suppliers with different design solutions or was it a design fix when all the power supply issues were discovered. Thanks in advance for your time.