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Questions tagged [repair]

Bricks, pieces and other elements sometimes break, deform, stop working, or get otherwise damaged - perhaps we can help you fix them?

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7 votes
0 answers
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Oil for old 4.5V motor? (UK)

I've just got my old LEGO Technic motor from my loft. It works but squeals in a way I don't remember it doing (35 years ago). I assume some lubrication would help and I've seen references to 3-IN-ONE ...
Derek's user avatar
  • 171
6 votes
0 answers
292 views

Fix Lego M Motor - The hooks aren't budging

I have a Lego M motor that is broken. I'm following the instructions here to try to fix it but the little tabs that hold the plastic frame together just won't budge no matter how hard I'm pushing them ...
mj_'s user avatar
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5 votes
0 answers
159 views

IR remote 8879 - cannot control speed of the motor

I got the 7938 train set for my kid. I hook up the battery to the receiver and try the IR remote 8879 with it. The motor starts running/spinning, but I can not control the speed with the orange "...
Henrik Dahl's user avatar
5 votes
0 answers
201 views

what plastic is used in the floatable hull of 60266 Ocean Exploration ship?

I need to know what plastic is used for the hull (dark blue) of the 60266: Ocean Exploration Ship, in order to glue a reinforcement on. I bought this for my boys (younger than the advertised 7+). It ...
some bits flipped's user avatar
5 votes
0 answers
122 views

How do I fix a loose joint between the top and bottom of the digger base?

How do I repair a loose-fitting joint between the top and bottom of the Duplo digger base? It has been used for only about a year. Is the wear more likely on the top or the bottom piece?
Duncan DJ's user avatar
4 votes
0 answers
799 views

Lego Mindstorms NXT 2.0 Not turning on

I have a Lego Mindstorms NXT 2.0, which worked well for a couple of years. However, after the last few weeks, it seems to not boot up. I took it apart, and noticed it seems to have a different ...
Ruhi Batool's user avatar
2 votes
0 answers
80 views

How to troubleshoot an inert Power Functions Servo motor?

I tried to test a PF servo motor before building it into something larger to see if it works - it seems it does not. When connecting it to a 59510c01 9V PF Battery Box and toggling the switch of the ...
zovits's user avatar
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2 votes
0 answers
152 views

LEGO monorail train can't climb slope

Just reopened the monorail set for my son to play with. Motor still works but it grinds and can't cope with pushing up the incline to the upper level on either slope. Looks very slightly worn but ...
Sarah Walker's user avatar
2 votes
0 answers
120 views

How do you open this thing without damaging it?

It's a 9008 DUPLO Activity Set from 1986. Looks like this on all the boxes.
Beate 's user avatar
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2 votes
0 answers
194 views

Fixing a LEGO M Motor connector

I have several broken "Powered Up" M motors and I took one apart to see what was wrong. I ended up snipping off a section of the wire and re-soldering it back together but testing with an ...
mj_'s user avatar
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2 votes
0 answers
208 views

NXT Sensors/Motors not working

I went back to using the NXT brick after two years and I'm having some problems: Motors do not respond to degrees or rotations; Ultrasonic Sensor and Color Sensor are not working; Touch Sensor is ok; ...
Lucas Basso's user avatar
1 vote
0 answers
122 views

LEGO Express 60197 displays low battery

Using new batteries to power the controller - however on connecting the app using Bluetooth the status immediately shows low battery. Uninstalled the app and reinstalled it with new set of batteries, ...
Seattle's user avatar
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