master clock is the digi 9652, op sys is 32 bit Windows 7,  also two UAD 1 cards, and a TC Powercore Classic, running Cubase 5 - audio plays for 15 seconds to maybe a minute, then goes silent; digi9652 panel shows sample rate changes to 96k (project is in 48k), and the time code window, which never has anything in it, reads 27 : 1 : 0 - with the mixer off, the ADAT IN window displays "no lock", after the audio output failure they change to "Sync" - with the mixer on, the ADAT IN displays Sync, after AOF the display still reads "Sync", tho the mixer (slaved) doesn't display the usual "Sample Rate Mismatch message"....please don't tell me I have to spend a bunch of money to solve this - any help will be much appreciated