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Potentiometer removal:

1. Remove the knobs from the bass and volume potentiometers.

2. Peel back the adhesive pads from the PCB, exposing the solder points of the potentiometers and their 
bracing.

Содержание ProMedia Ultra 2.0

Страница 1: ...mm flat or thereabouts Soldering iron solder wire thin as possible Hot glue gun Drill drill bits 2 5 12mm spade bit 10mm Spanner wrench 10mm Light sandpaper Initial disassembly 1 Turn the speakers off remove them from mains power unplug all cables from the main speaker 2 Remove it s dust cover 3 Remove the ten screws that secure the faceplate 4 Remove the faceplate Note The faceplate is leashed to...

Страница 2: ...Potentiometer removal 1 Remove the knobs from the bass and volume potentiometers 2 Peel back the adhesive pads from the PCB exposing the solder points of the potentiometers and their bracing ...

Страница 3: ...ing from the PCB 4 b Flex the potentiometer back and forth to weaken break the pins then use the soldering iron to remove what remains Note Steps 5 7 apply to the volume potentiometer 5 Apply the soldering iron to the two brace solders and use leverage to free it from the PCB 6 There are several small clasps that hold the body of the potentiometer together Using the flathead screwdriver pry them b...

Страница 4: ...e red purple sides to maintain a clockwise action 1 Solder new wiring to main PCB board Note Unlike these pictures make sure the wiring is kept as low and backward as possible to allow space for the new potentiometers Note Make sure that the wire doesn t poke through the opposite side of the PCB otherwise it will be difficult to reassemble the unit 2 Surround solders with hot melt glue ...

Страница 5: ...nnect the two leads from the LED and the two leads from the old pot switch as per the switch wiring schematic Faceplate modification Information the following picture shows the original faceplate holes in solid and the new larger holes in dash The original knobs have a diameter of 9mm these new parts 12mm The 2 5mm LED is replaced with a 4mm diameter bushed toggle switch Since the LED hole is so c...

Страница 6: ...itch use an electric drill and a bit the size of the hole to widen the hole downwards The idea is to enlarge the hole away from the two above it to allow enough space for the new switch 4 Unlike the bass and volume holes the LED hole is surrounded by thicker plastic To get the switch as close to flush at the front as possible countersink the hole using a spade bit In the above picture a regular la...

Страница 7: ...the faceplate and hold it there until the glue cools Finished product before and after ...

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