I purchased 12V Flickering LEDs to replace the burned out LEDs in a set of 3 LED candles. I removed the old LEDs & circuit boards from the candles and simply glued the new 12V Flickering LED in place - it came with lead wires and a tiny shrink wrapped portion near the LED that makes it flicker. There are 3 separate candles and the wires lead back from each candle to a central point, where I soldered them together and also included a 4th pair of wires which I use for the power source. That 4th pair of wires is connected to a 12V DC 6 Amp(way overkill) power supply that is plugged in the wall.

The issue that I'm having is that when I first plug them in, all 3 Candles appear to be similar in brightness - but then a few seconds later, one of the candles dims down much lower than the other 2 candles. If I unplug the power, the candles slowly start to decrease in brightness (and that dim candle actually increases in brightness) and then they all turn off. The lengths of wire leading to the 3 candles are all the same.

Why aren't they equal in brightness? Is there something I can do to fix the issue? Thanks in advance for your advice

 

How sure are you that the power supply running these devices is delivering solid DC power? That is the first question. The second one is are there no oscillations going on?? If some part is oscillating then the operation will be different than you expect.

 

MisterBill2, Thank You for your help in trying to figure this out!

The first power supply that I tried was from a home security camera, 2amp 12V transformer. Thinking that maybe the issue was somehow a lack of amps, I purchased a new transformer online at Amazon which indicated "12V Power Supply 8A Transformer, AC100-240V Input 12VDC 8A Output Switching Adapter 100W LED Power Adapter for LED Strip Light,US Plug, UL Listed"
https://smile.amazon.com/gp/product/B075R3RW6J/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1c

Should those types of power supplies work fine?

The LEDs are also from Amazon with the descriptoin "5mm 12v Pre-wired Flickering / Candle Amber / Orange LED - Ultra Bright"
https://smile.amazon.com/gp/product/B06VT7WTD6/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

I have not intentionally done anything to cause oscillation, but does the flicker in the shrink wrap of the LED cause that? How would they normally be wired to wire 3 from 1 power source?

Thanks again!

 

Tried it with a 9V battery and it worked well. Therefore, I swapped the power supply for an old 9V power supply 600 mah and all is working fine now.

 

From your descriptions of the power supplies you tried, they are not good choices; some may be AC, not DC and one was a current supply, not a voltage supply as required.