I own an unmodified 2600 'Vader' and it has an issue where the display on my old tube TV becomes snowy after 10-20 minutes of gameplay. The power supply is fine, so is the RadioShack Universal TV Switchbox and the composite cable. All connections are tight, game connections are clean on the cart and the console. I haven't noticed any cold or broken solder joints and all switches are working fine, as far as I can tell.
I searched some forums for instructions to fix this issue, and most say to replace the 5v Regulator and the 0.1 ufd 24v capacitor on the lower left of the Atari's motherboard. The thing is, I can only find 50v capacitors at the local RadioShack's. I don't know all that much about electronics, so if I put one of these 50v capacitors in, do I risk causing long-term damage to my console?