advice sought: taking apart the DL4

[Rainer Straschill <moinsound@googlemail.com>]

On the current minimalist trip, I discovered that my DL4 has obviously 
ceased to function.

Question:
can anyone tell me (or point me to a document that explains) how to take 
apart the DL4 properly (dismounting PCB etc.)?

Yours,

          Rainer

ps: and failing that - is there anything you'd like to recommend as a 
replacement - thinking ahead a bit here. Requirements: should do cool 
delays mainly (like the sweeping filter of the DL4). A nice looper would 
also be fine. Varispeed for delays a plus but not required.

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