Question about light circuitry on Menards "American Power and Light" building

This sounds like an issue that emerged from a problematic power supply Menards sold for its buildings several years ago. The power supplies didn’t regulate the voltage properly, causing some of the electronic circuitry to fail on the buildings. Menards offered the free exchange of those power supplies for newer units. 

Jim, thank you for the response but if that is what caused the two devices to fail, why wouldn't also cause the two red LEDs to fail and the circuit board that controls the sign to fail.

Thanks,

Don

If the failed part was bad at the start , when it failed it only stopped power to those led connected to it. (like a fuse)

The other red leds were on a different circuit so did not fail.

I would replace the failed parts with a 1 amp diode and a power limiting resistor in series.

I would try different resistor values starting at 1k.

Use the highest value that will still light the leds at the wanted brightness.

I have the same building and I am concerned about what I should power it with. I also feel due to poor design of the the power supply that menards should be replacing the building and power supply if in fact their power fried the electronics on a $100 building.

I really like their accessories, however, this concerns me and makes me reluctant to purchase any more of their buildings.

Joe Gozzo

Which power supply was problematic? Pat B.

I have this building, and power it using a Lionel ZW AC Transformer, through an AC to DC Adjustable Buck Converter.  I run it at 3.5 volts DC  (1 volt DC lower than the recommended), and it has been fine for 3+ years so far. 

Same is true for all of my Menards buildings- Menard's Hobby Shop, York Hotel, Menard's Feed and Seed, and Dakota Cabinet Factory.  All run at various voltages (never more than the recommended) using one or a shared buck converter.

How to use a Buck Converter file attached.