[Arran]

Disposable camera capacitors are made to be used a few dozen times and then thrown out. They will not stand up in a television for very long. Get some modern 450 volt caps and either restuff the cans, or disconnect the cans and mount the components underneath the chassis.

That actually isn't true, I have restored many a radio with photo flash capacitors, they were typically between 80 and 160 microfarad at 300-330 volts DC, they weren't designed specifically for disposable camera flashes they are off the shelf units. The caps were often made by reputable companies like Rubicon and Nichicon , and are labeled as such, some are 105 degree units, if anything they are tougher then the run of the mill electrolytics since they need to charge and discharge quickly in what amounts to a DC to DC convertor. Typically I connect them in series to get a higher voltage rating, which halves the capacitance, all of the radios that I installed them in have been operating for years without problems. If they are installed in a regular 300 volt DC B+ power supply it doesn't matter whether the cap is installed in a TV or a radio, it's not going to know the difference.
Best Regards
Arran