Border Patrol Power Supply Installation Instructions.
Model: Audio Innovations series 800mk3 /1000.
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, CABLE GLAND, HEAT SHRINK.
TOOLS REQUIRED. SOLDERING IRON, PLIERS, M4 ALLEN KEY, SCREW DRIVER, SOLDER, ELECTRIC DRILL, 10mm or 13mm 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).
REMOVE THE VALVES NOTING THEIR POSITION.
This is a two stage conversion. The Stage 1 disables the on-board high voltage supply and connects the new off-board supply. Stage 2 enables the relay to switch the new supply on and off from the existing on-off switch
Remove the coloured plastic sleeve from the on/off switch with a firm tug. Remove the 4 Allen bolts securing the lid and taking care not to damage the mains switch remove the lid.
the board using only the screws for the rearmost
capacitor. Drill a 10mm or 13mm in the underside or back of
the unit and fit the rubber grommet or the cable gland supplied. You may
find an existing hole which you can enlarge on the bottom
of the unit. Be careful not to damage any
internal components whilst drilling. Feed
the supplied cable through the hole. Feed one of the left
over stainless steel screws through the circular tag on
the RED cable, through the PCB hole
marked positive (+) and into the capacitor terminal of
the foremost capacitor. Repeat for the GREEN cable
with the circular tag through the PCB to the negative (-)
capacitor terminal of the foremost capacitor. Screw down
tightly ensuring that the tags do not touch each other.
You have completed the attachment of the High Voltage
YELLOW wire to Pin2 of an EL34 valve base under the PCB and the BLUE
wire to Pin 7 of the same EL34.
DANGER: Check that the two circular connectors on the H.T. supply are not touching each other.
Dress the new cables tidily and replace the lid. Replace the valves and the on/off switch sleeve and connect the newly installed umbilical lead to the off-board supply. Replace the mains leads to both units. Switch on the Audio Innovations amplifier as usual. Your amplifier should now be ready to play. The valve supply will take longer to come up to operating voltage than the old supply but this will have the advantage of lengthening the life of the valves
c/o Kaja Music Systems Waldorf Maryland USA
Phone/Fax +1 301 705 7460