I have a Teac A-H500 amp, it's hooked up to some fairly old Sony speakers, I'm feeding it via 3.mm headphone to component cable from an iPod. It'll work fine for about 30 minutes, then every 4-5 minutes will cut out for a split second, then all will be well. Any ideas? I'm happy to take it apart to replace parts.

Audio Players & Recorders - Teac - A-H500 Amplifier