The service was quick and simple, finding the service manual easy and it appears to be the original with colour schematics. It contained the info I was after and so sorted the problem.
I have copied it to CD and attached the envelope to the inside back cover of the owners manual. Good manual and excelent service. Robin Wood, Wood Electronics, New Zealand.
MACKIE HR824 26 pages English-only Service Manual contains:
1) HR824 technical overview with the description of front and rear panel switches.
2) HR824 specs
3) Block Diagram
4) Wiring Diagram
5) Packaging management
6) Spare part & final assembly list (for PCB rev A and B) + exploded view
7) Test Procedures (where, how to measure voltage...) including Test Point diagram on the PCB.
8) IC and Transistor charts.
Excellent guide: very clear, good scan quality enabling us to print readable diagram :-)
Note:
Mackie HR824 make extensive use of surface mount devices (SMD). Service on the HR824 must
only be undertaken by experienced service technicians with the right tools, experience and patience to perform surface mount rework when needed.
Text excerpt from page 10 (click to view)
TEST MODE
This model has a test mode function in the disassembled condition.
Screw
TP701 Screw
TEST
1. How to use the test mode: � Short the test land in the MAIN C.B. � Auto-stop function is not detected by micro-computer while test mode is active. Note: Make sure that the test land is opened after the test mode is de-activated. (Auto-stop function is not available with shorted land condition.) 2. How to disassemble the circuit board. � Removes the soldering part in the MAIN C.B (with the � Removes two screws.