HELLO ALL...Need help with circuit Schematic for Arcam DAC

Hi All,

Im a hifi enthusiast from Malaysia with limited DIY experience. I picked up hifi during my university time in the mid 90s in the UK. It seems the bug is still with me until now. I run 2 sets of stereo separates, one with ole chrome and the other with olive naim amplifiers at the heart, sources are Arcams and Audiolabs and speakers are Epos and Mission.

3 days ago, my trusty 30 year old Arcam Black Box 50 stopped working. One thing I notice is that the sync lock light is stuck ON all the time (cannot be switched off) and there's no red light at the sync lock terminal at the back of the unit. My go-to CD player repairman asked if I can get a hold of the correct circuit schematics. He's got the repair manuals, but its not sufficient it seems.

I was wondering if anyone here can assist me on this issue, or even help with the circuit schematics of the Arcam Black Box 50. I can be contacted via WhatsApp at +60123827078. Thanking all in advance and looking forward to making your acquaintances and sharing of ideas here.