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01-15-2016, 10:09 PM | #15 | |
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However, the Tom's tails are also LED. They don't seem to be losing boards the way others are. Depot may be using better components, or it may just be that they're not trying to cram 50 LEDs into a single housing. Tom's do have a problem, though. The heat from the drivers melts the black plastic along the top of the light inside the outer housing, opening a gap for light to escape. Mine have this problem. Eventually I'm going to open them up and fix it, but a $480 set of lights shouldn't do this. Here's a pic (not my car) of the problem: |
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01-15-2016, 10:23 PM | #16 | ||||
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The term @extrashaky is referring to is called thermal runaway, the driver is supposed to lower voltage as temperature increases to the average of the LEDs preventing damage and then when temp decreases far enough go back up in voltage. But what that ends up happening as a byproduct of lower voltage, is an increase in the current running to the LED when you lower the volts. When the driver fails, is of bad quality, over stressed (i.e. one driver for way too many LEDs on a strip) or in the case of taillights constant heat cycling in an enclosed space, you end up with the set of the LEDS (can be 1 or even 5 or 10) getting too much current and burning themselves out. The OEM brake lights don't have this problem because its about 15 super bright LEDs spaced apart with a really high quality probably DENSO driver
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Last edited by FRSBRZGT86FAN; 01-16-2016 at 12:18 PM. |
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01-16-2016, 01:05 AM | #17 |
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I learned more about LED lights in the last 5 minutes then I did in the last 10 years! All very good to know as we are going all LED in the new plant we are building (not the same I know but the principals still apply).
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01-16-2016, 10:25 AM | #18 | |
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Those are probably even more hardcore, they probably have dedicated heat sinks and stuff if they are industrial spotlight setups and such.
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01-16-2016, 01:25 PM | #19 |
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shhh...I thought we were keeping the new building a secret?
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01-16-2016, 01:31 PM | #20 |
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Not THAT one the OTHER one.
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01-16-2016, 01:35 PM | #21 |
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My first gen.'s both failed with 2 weeks of each other. Luckily they were still just less than a year old and were replaced by the vendor. The replacements have been failure free since then. If I remember correctly, there was a date stamped on the new ones on the outer housing. Don't remember if the first gens. had a date on them or not.
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01-16-2016, 05:42 PM | #22 | |
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Problem comes in when you put them in a drop ceiling or other enclosed space and don't allow for the heat. You have architects who used to allow for the heat from fluorescent ballasts who now think the LEDs don't produce any heat, so they don't provide for air circulation. They raise the drop ceiling too high or call for the fixtures to be mounted flush against surfaces, where the heat has nowhere to go. Then you get fixtures cooking themselves and failing, and everyone wants to blame the PE who told them all along that they can't do that. |
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01-16-2016, 10:20 PM | #23 | |
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Yup here's a good example: [ame="https://www.youtube.com/watch?v=mBASHBvrMC0"]LED Lighting System - Jay Leno's Garage - YouTube[/ame]
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01-17-2016, 12:54 AM | #24 | |
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I have heard they've revised there designs and production stuff though, as in no more condensation as well
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