Oneobgyn is correct - I recently ran into the exact opposite of your problem with mine and was informed that the chips that most commonly fail are long our of production. Sorry - maybe we could combine systems and achieve playback of both formats :)
Info on phillips SACD 1000 repair/mods
Anyone know of a good source for repair or possible modification for this unit, it will only play SACD and not Redbook. Any info would be appreciated and thanks Chad