I have about 5 of the Mk1 units all in some state of repair. Deben has told me that they have not supported the Mk1 now for 6 years and they cannot tell me what the IC's are inside the box, yeah right. All parts for the Mk1 are available, resistors, capacitors, the 2 transistor types, the diode, might struggle a bit with the variable resistor in the same size as used but others are easily available but may have to be fitted in a new box? So after all that whats the IC numbers used? Somebody somewhere must have a mark 1 with the numbers not scratched off or they know someone who used to service
