After years of service, my Actiontec GT701 DSL modem quit working. This is a cheap pretty much useless modem supplied by my DSL ISP but I have it configured as a transparent bridge, with a real fire wall sitting behind it taking care of all the LAN needs.
As I expected the cause of the problem was capacitors which were easily replaced as shown in the video. Here is a copy of the manual if anyone is looking for a copy.