Audio Alchemy DDE V3 experts required

I have a DDE3 needing repair,I'm in the UK and have the e-mail of an ex-AA guy and the Dusty guy in the States but I would like to pick the brains of any Audiogoners who may be able to help before I go down the repair road.
First up the unit digitally seems to be fine,it will read HDCD discs and normal discs,the digital output works.
It locks ok.
It has no remote contol but the remote control sensor is fitted,this is part of the problem I suspect,the bad news even when I get some music the right channel is giving out only noise,so I suspect that output is bust.
With the connector from the remote control sensor fitted on the back jumper I can change inputs but get no LED's on the volume and no sound-not a surprise.
With the connector fitted on the front jumper the unit goes through a loop of the digital inputs staying on each for about 45 secs,the live input gets progressively louder from silence to a normal level (only through one channel as previously described)and then moves on,no pressing of any buttons will stop the loop.
I've tried different combinations of the connector including none-nothing helps.
I'd appreciatte if anybody can help with ideas or theories-a set of schematics would be nice too if anybody can help.
I suppose if all fails it'll make a nice paperweight.
Thanks in advance.
Ben