Problem with NAD 533

I purchased a NAD 533, the seller stated it worked fine, I have no reason to doubt him. However, when I connected everything I got NO SOUND. I know all my connections are ok because I tested my preamp and receiver inputs with a different turntable and I got sound, albeit crappy sound due to a broken B&O mmc4. I took a close look at the wiring from the tonearm (standard REGA RB250) and the blue wire LH earth) was seperated, i gently soldered it to its appropriate connection to the cartridge, and still no sound. Is there anything else, save maybe my ignorance, that would cause no sound. Thanks