wadia 781i

hello, can someone help with wadia 781i repair? we have diagnosed the problem and need a replacement module. i wrote to wadia; no reply.
Thanks. George Meyer AV has responded. I have sent the picture with the module at fault. Awaiting reply. 
Let us now how the experience is.  My neighbor and I both have 321 DACS and I plan on keeping mine for awhile.  So would be interested to know.  I actually called them last year just to chat and got the warm fuzzy. 
i sent them a picture of the circuit board with the part circled. Sadly they do not have the required part.