Border Patrol Power Supply Installation Instructions.
Model: Audio Note Meishu/P3/P4.
ELECTRICAL KNOWLEDGE IS REQUIRED IN ORDER TO PERFORM THIS CONVERSION SAFELY. POTENTIALLY LETHAL VOLTAGES ARE PRESENT. WE CANNOT BE HELD RESPONSIBLE FOR ANY ERRORS OR ACCIDENTS THAT MIGHT ARISE WHEN PERFORMING THIS CONVERSION. IF YOU HAVE ANY DOUBT ABOUT YOUR ABILITY TO PERFORM THIS CONVERSION SAFELY PLEASE CONTACT US FIRST
READ THE INSTRUCTIONS FULLY BEFORE COMMENCING.
KIT CONTENTS: POWER SUPPLY, 4 WAY TERMINATED CABLE, RUBBER GROMMET, HEAT SHRINK, IEC MAINS LEAD. TOOLS REQUIRED. SOLDERING IRON, PLIERS, ALLEN KEY, SOLDER, ELECTRIC DRILL, 10mm DRILL BIT.
DISCONNECT THE AMPLIFIER FROM THE MAINS BEFORE BEGINNING.
If the unit has been used recently, allow sufficient time for the power supply capacitors to discharge before beginning (5 mins is usually sufficient).
This is a two stage conversion. Stage 1 disables the on-board high voltage supply and connects the new off-board supply. Stage 2 enables remote switching of the new supply from the amplifiers on-off switch.
the PCB that carries the electrolytic power supply
capacitors, normally 220uF/450V or similar and solder the
GREEN wire to the negative (-ve)
terminal of one of these capacitors or to the solder pad
that carries a black ground wire or the fuse holder that
sits in the mains transformer H.T. centre tap circuit (if
you are in any doubt about which wire or pads are ground
connections check them as follows: With an electrical
meter, set it to measure resistance and place the BLACK
probe in a BLACK speaker terminal. Place the RED probe on
the pad or wire in question and measure the resistance. A
zero Ohm reading indicates a Ground point.). This
completes Stage 1.
DO NOT REPLACE THE 5U4G