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Blog-Titel

ATTENTION PRODUCT DEFECT!

Noah
12 Jun 2025
Noah Fiederle - Social Media

Concerns use of NOCH micro-rooms LEDs (art. no. 51250, 51270, 51271, 51275, 51276, 51280, 51281, 51285, 51286) and NOCH pumpkins (art. no. 51210) with a 16V model railroad transformer (“iron-core transformers”)


Dear customer,

When using the following products with a 16 V model railroad transformer (“iron-core transformer”), there is a risk that a component on the circuit board may burn out due to a short-term overvoltage caused by the design when the transformer is switched on/plugged in. This can result in high temperatures or even a flame. applies to the use of NOCH micro-rooms LEDs (item no. 51250, 51270, 51271, 51275, 51276, 51280, 51281, 51285, 51286) and NOCH pumpkins (item no. 51210) with a 16V model railroad transformer (“iron-core transformers”).
CAUTION: There is a risk of injury and fire!

Art.-Nr.

Batch-No.

Name

5121018094012Pumpkins, illuminated
5125032134012micro-rooms LED Building Lighting Kit
5127027124012micro-rooms Single-LED cool-white, 4 pieces
51271
2712401
micro-rooms Single-LED cool-white, 8 pieces
5127527124012
micro-rooms Single-LED warm-white, 4 pieces
5127627124012
micro-rooms Single-LED warm-white, 8 pieces
5128027124012
micro-rooms Double-LED cool-white, 4 pieces
5128127124012
micro-rooms Double-LED cool-white, 8 pieces
5128527124012
micro-rooms Double-LED warm-white, 4 pieces
5128627124012
micro-rooms Double-LED warm-white, 8 pieces


WARNING:

The above products must not be operated in their current form with a 16V model railroad transformer (“iron core transformers”, e.g. Märklin 6647, 66471, 6631, 37540 etc.; Fleischmann 6755, 6735 etc. and other manufacturers). If you have already installed the products, never operate the built-in lights with an unregulated 16V model railroad transformer!
Note: If you operate the lighting elements with a power supply unit or a digital control unit (max. 16V), there is no danger. The products can be operated safely in these cases.

Necessary measure for operation with 16V model railroad transformers:

Only operate the product with a 16V model railroad transformer after installing a 300 Ohm series resistor. This reduces the short-term overvoltage when switching on or plugging in the transformer and enables safe operation. The resistor must be connected to the supply cable of the circuit board (e.g. by soldering).
If you wish to operate the above-mentioned products with a 16V alternating current transformer, we can offer you the following solutions:
  • Sending a resistor: Please contact us and let us know how many LEDs you have purchased. We will then send you the resistors together with installation instructions.
  • You can return the above-mentioned products for repair
    - to NOCH GmbH & Co. KG, Lindauerstraße 49, D-88239 Wangen im Allgäu by post or
    - return them to the NOCH Modellbau-Welt, Lindauerstraße 49, D-88239 Wangen im Allgäu
    - at your local NOCH specialist retailer, who will then forward them to us for you

How to contact us:

Please contact us with any questions or to request the resistors or for the repair offered:

NOCH GmbH & Co. KG
 „Complaint LED“
Lindauer Straße 49
D-88239 Wangen i m Allgäu 

by e-mail to info@noch.de, subject “LED complaint”
or call us during business hours on 07522-97 80 0. 

Further information and the installation instructions for the resistor can be found at www.noch.de directly on the product detail page.

If you are organized in associations or clubs or have model builders and NOCH customers among your friends and acquaintances, please make them aware of this warning. Please also share this information on your social media channels such as Instagram, Facebook etc.

We apologize for the inconvenience and thank you for your understanding and for contacting us in advance.
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