Relay Board Replacement; Led Driver Board Replacement - Dimplex BLF7451 Service Manual

Figure 8
Controls Assembly
bly (Figure 8), located at the top of the mirror on the
right side of the unit.
2. Slide the controls assembly out toward the front of the
unit.
CAUTION: Ensure that the assembly is removed care-
fully, ensuring that no wires are caught or over strained.
3. Locate the switchboard (Figure 9).
4. Disconnect the wiring harness from the switchboard.
5. Remove the switchboard by loosening the nuts on the
spacer stands.
6. Install the new switchboard on the space stands.
7. Reconnect the wire harness onto the back of the
switchboard in its original configuration.
8. Reassemble in the reverse order as above.
CAUTION: When re-installing, be sure the wires are
guided and tucked into the proper openings along the right
side so they are not pinched and allows enough space to
reinstall the panel.

RELAY BOARD REPLACEMENT

WARNING: Disconnect power before attempting any
maintenance or cleaning to reduce the risk of electric
shock or damage to persons.
CAUTION: If unit was operating prior to servicing allow
at least 10 minutes for lights and heating elements to cool
off to avoid accidental burning of skin.
Tools required: Phillips head screwdriver.
Needle nosed pliers.
CAUTION: Follow "Preparation for Service" instructions
before proceeding.
1. Remove the 2 screws, that secure the controls assem-
bly (Figure 8), located at the top of the mirror on the
right side of the unit.
2. Slide the controls assembly out toward the front of the
unit.
CAUTION: Ensure that the assembly is removed care-
fully, ensuring that no wires are caught or over strained.
3. Locate the relay board (Figure 9).
4. Transfer the wiring connections from the existing re-
Retaining Screws
Figure 9
6 LED
Driver Board
12 LED
Driver Board
Relay
Board
ceiver to the new relay board.
!
NOTE: Using a flat head screwdriver gently pry be-
tween the end of the connectors and the board to release
the wires.
5. Remove the relay board off the plastic mounts by
pinching the plastic mounting tabs with needle nose
pliers. Pull the old board off.
6. Line up the holes on the board and gently press the
new board onto the mounts. Make sure the board is
secure.
7. Reassemble in the reverse order as above.
CAUTION: When re-installing, be sure the wires are
guided and tucked into the proper openings along the right
side so they are not pinched and allows enough space to
reinstall the panel.
LED DRIVER BOARD
REPLACEMENT
WARNING: Disconnect power before attempting any
maintenance or cleaning to reduce the risk of electric
shock or damage to persons.
CAUTION: If unit was operating prior to servicing allow
at least 10 minutes for lights and heating elements to cool
off to avoid accidental burning of skin.
Tools required: Phillips head screwdriver
Needle nosed pliers
Wire snips
CAUTION: Follow "Preparation for Service" instructions
before proceeding.
1. Remove the 2 screws, that secure the controls assem-
bly (Figure 8), located at the top of the mirror on the
right side of the unit.
2. Slide the controls assembly out toward the front of the
unit.
CAUTION: Ensure that the assembly is removed care-
fully, ensuring that no wires are caught or over strained.
3. Locate the defective LED driver board (Figure 9).
4. Transfer the wiring connections from the existing driver
board to the new driver board.
!
NOTE: Using a flat head screwdriver gently pry be-
AC/DC
Power
Adapter
Switch
Board
9