A few months ago, I had the same problem with my TiVo. At the time, it was sitting on top of the DVD player. I fixed the problem simply by setting TiVo beside the DVD player instead of on top of it.
Anyway, I’m going to keep track of what it is doing until the air conditioning gets turned back on. And it is recording the choppiness, sadly (I tried transferring the recordings to the computer to watch but if they were recorded when it was choppy, then they were choppy on the computer too).
March 25 - was okay in the morning, became choppy around 3pm, temperature in the apartment was between 85-88F, TiVo’s internal temp was between 43-47C
March 26 - recordings ceased to be choppy around 2:15am (a recording at 2am was choppy, one at 2:15 was not); became choppy again sometime between 10am and 3pm; I reboot at 8pm which cleared it up for about 10 minutes, apt temp was about 83-85F, TiVo’s internal temp was 43C
March 27 - stayed choppy throughout the night; at 7am, apt temp was about 81F, TiVo temp was 40C, reboot; stayed normal until about 3pm
March 28 - stayed choppy throughout the night; at 7am, apt temp was about 81F, TiVo temp was 42C, reboot; stayed normal until about 3pm (noticing a pattern?); at about 7pm, TiVo temp was 43C
March 29 - stayed choppy throughout the night; at 7am, apt temp was about 81F, TiVo temp was 42C, reboot; stayed normal until about 2pm; at 6pm, reboot and taking a suggestion from Ben, I moved the unit out of the entertainment center into the floor, and it has stayed normal since
March 30 - still normal at 7am, TiVo temp was 40C
April 2 - air conditioning is working! TiVo’s temp is down to 37C so I can move it back into the entertainment center
Stay tuned to this post for more *exciting* updates.
Here’s a few posts I found on the subject on TiVo’s support forums that support my theory:
Anyone want to donate a fan?