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crwdns2944351:0crwdnd2944351:0Morris 57030 multimeter LCD repaircrwdnd2944351:0crwdne2944351:0

crwdns2933797:0John Koellacrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 John Koella

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Morris 57030 multimeter
Type
teardown
Title
Morris 57030 multimeter LCD repair
Introduction
LCD readout on this multimeter developed missing segments in the numbers making them unreadable. Simply removing and cleaning the conducting polymer strip that connects the small LCD screen to the circuit board restores normal LCD function.
# Remove the two screws from the back of the meter to open it.
# Then remove the three screws to remove the circuit board from the body, be careful not to lose the two small ball bearings that sit on springs on the underside of the circuit board that hold the dial in position.
# Remove the black plastic LCD and backlight frame from the top of the circuit board by pushing and releasing the small black plastic pins that protrude through the circuit board.
# Remove the pinkish conductive polymer strip from the black plastic LCD frame.
# Wipe both edges of the polymer strip with a alcohol wipe, and wipe the corresponding section of small copper conductors at the top of the circuit board that make contact with the polymer strip.
# Replace the polymer strip into the LCD frame making sure it contacts the LCD screen. Then clip the LCD frame back in place making sure the polymer strip makes solid contact with the circuit board.
# Reverse the steps to put the meter back together.
Time Required Min
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Time Required Max
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Imageid
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Difficulty
Moderate
Author
John Koella
Public
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  • Small Phillips Head Screwdriver, small flathead screwdriver or exacto knife x1 added.
  • Alcohol wipes x1 added.

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  • In Progress added.
  • Community-Contributed Guide added.

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