what i did was just change the large, and medium sized electrolytic caps, and a few smaller caps located around the large/medium caps.
i didnt change all of the caps in the jvc tv because there was such a great amount in total, so the smaller electrolytic ones i just left alone (seemed like around 20+ of small electrolytic caps).
i began by removing the back cover of my tv and inspecting the main PCB, and then with a pen and paper just wrote down all the values of the caps i wished to change. you match the capacitance numbers exactly (eg. 220uF, 1000uF, etc), but for the volts rating, you can use the same value or HIGHER. so if one of your caps you want to change is marked: 220uf 50v, you can use a 220uf 63v, or a 220uf 100v, etc
i live in the UK, if you also live in the uk i recommend the only place you buy caps from is FARNELL (google search).
at the moment they are doing free postage for any size order, even just a few caps.
finally, the only capacitor brands i recommend using are: rubycon, nichicon, panasonic, vishay.
i wouldnt bother with anything else. there's loads of garbage out there.