New passenger car LED lighting burnout

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New passenger car LED lighting burnout - is this normal

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dwptravel		#1 Posted : 06 July 2022 02:14:37(UTC) Retweet
Joined: 13/06/2010(UTC) Posts: 19 Location: Washington DC		The middle one of the passenger cars in a Marklin NL three passenger car set with electrical conducting couplers I purchased about a year ago had the lights go out. It clearly wasn't a bad connection as the two cars on either end still had a power connection, and I smelled a funny smell. So I opened it up and found that one of the electrical points had literally melted and was slightly smoldering, which was the source of the smell. It was so hot, I was surprised it did not erupt into flames. You can see the burned spot in the picture below (if my upload worked). I guess I will just replace it, but has anyone seen this happen before? It is a bit concerning.

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kiwiAlan		#2 Posted : 06 July 2022 13:44:01(UTC) Retweet
Joined: 23/07/2014(UTC) Posts: 8,109 Location: ENGLAND, Didcot		Originally Posted by: dwptravel The middle one of the passenger cars in a Marklin NL three passenger car set with electrical conducting couplers I purchased about a year ago had the lights go out. It clearly wasn't a bad connection as the two cars on either end still had a power connection, and I smelled a funny smell. So I opened it up and found that one of the electrical points had literally melted and was slightly smoldering, which was the source of the smell. It was so hot, I was surprised it did not erupt into flames. You can see the burned spot in the picture below (if my upload worked). I guess I will just replace it, but has anyone seen this happen before? It is a bit concerning. Well, it is not unknown for electronic components to fail, and sometimes they will burn in the manner you show. is it classed as an MHI item? Is the lighting factory fitted? How old is this set? If less than 5 years old it will be under warranty if an MHI item. Personally if the answers to the above questions are all 'yes' then I would return it to Marklin for a warranty replacement. The board doesn't look like like any of the catalogue lighting kits available, so will need a factory replacement.

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marklinist5999		#3 Posted : 07 July 2022 15:04:20(UTC) Retweet
Joined: 10/02/2021(UTC) Posts: 3,139 Location: Michigan, Troy		Well, if it wasn't caused by a short, then i think it's a rare occurence. Still, I'd also be upset. I am wondering if anyone has used the Digikeiis led coach lighting kits? I just discovered these yesterday evening. They're a bit pricey, by about $10 more than the new to be released marklin long ones with the large capacitor to be released next month tnnatively.


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JohnjeanB		#4 Posted : 08 July 2022 00:30:09(UTC) Retweet
Joined: 04/02/2011(UTC) Posts: 3,130 Location: Paris, France		Hi Something similar happened on my Kittel 3425 (my fault) on the headlights. They were tiny surface-mounted yellow LEDs. Excess current made them burn and destroy the copper trace of the PCB So I took the opportunity to install dual color LEDs instead Here is the work in progress What I am trying to say is: if the coach is not under warranty, you may try to fix it yourself In your case, I am not sure but the burned 4 legs component looks like a rectifier bridge that had excessive current. They are easy to find on ebay. Bon courage Jean
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David Dewar		#5 Posted : 08 July 2022 13:07:59(UTC) Retweet
Joined: 01/02/2004(UTC) Posts: 7,343 Location: Scotland		Originally Posted by: marklinist5999 Well, if it wasn't caused by a short, then i think it's a rare occurence. Still, I'd also be upset. I am wondering if anyone has used the Digikeiis led coach lighting kits? I just discovered these yesterday evening. They're a bit pricey, by about $10 more than the new to be released marklin long ones with the large capacitor to be released next month tnnatively. I have tried the lights you mention but now I use Viessmann light bars and have found them to be reliable and at a reasonable price. Might be worth trying one to see what you think. Some come with a decoder that lets you light different parts of the coach etc but I dont think they are worth the extra cost.
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