Go Back   Keystone RV Forums > Keystone Tech Forums > Repairs & Maintenance
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 12-11-2017, 05:30 PM   #1
sourdough
Senior Member
 
Join Date: Feb 2014
Location: W. Texas
Posts: 5,569
LED lights - problem

Just a heads up.

Changed all the lights out to led (about 40) 2 years ago. I had previously changed them to led that were 12v only. I had numerous problems with them so changed them all to the 12-28v leds. So much better and so much more dependable.....until this evening. We were sitting here watching tv the lights started flickering, one side of one fixture went out and then the smell of smoked electronics.

One side of one fixture just smoked....blacked out. It was a 3528 led . Blacked out the back of the fixture, burned plumb up, smelled up the trailer. Cleaned it all up and put in a new led....working great. Just giving a heads up; I have a lot of faith in leds but you need to be aware that they can go "poof" - many change to them; many newbies. Just something to be aware of. Keep some spares in the shelf somewhere.
__________________

__________________
Danny & Susan wife of 50 years
2014 Ram 2500 6.4 4x4 CC
2014 Cougar High Country 319RLS
sourdough is online now   Reply With Quote
Old 12-11-2017, 09:14 PM   #2
BigTexRex
Member
 
Join Date: Dec 2017
Location: Livingston
Posts: 63
Aren't the 3528 LEDs light strips? I find cheap LEDs burn out just as fast an incandescent bulbs. When I want bright white light I use car backup lights--one two-light fixture can produce 2,000 lumens.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
__________________

BigTexRex is offline   Reply With Quote
Old 12-12-2017, 04:24 AM   #3
Hodgy
Senior Member
 
Hodgy's Avatar
 
Join Date: Nov 2017
Location: Bragg Creek
Posts: 612
.

The Product Dimensions show as 5.1 x 4.4 x 1 inches.

Is that really how large these are, 5.1 " ?

.
__________________
2016 Bullet 1800RB, UVW 3260, led by a 2005 Chev Silverado Z-71 1500, Crew Cab, 5.3L, 4WD, Tow & Off Road Package with 4.10 Rear Axle, GVR 7000 lbs, Front GWAR 3925 lbs & Rear GWAR 4000 lbs., Payload 1600 lbs., Hellwig 6012 Air Bags. 97' Honda Goldwing GL1500.
Home Base is the Alberta Foothills at 4300 ' ASL.
Hodgy is offline   Reply With Quote
Old 12-12-2017, 05:14 AM   #4
Rick
Senior Member
 
Join Date: Jul 2011
Location: So. Cal
Posts: 106
Third Amazon photo shows a length of 1.58 long X .55 wide.
__________________
Rick
2016 Springdale 212
2001 Ford F-250 Super Duty 7.3 Diesel
Rick is offline   Reply With Quote
Old 12-12-2017, 07:11 AM   #5
sourdough
Senior Member
 
Join Date: Feb 2014
Location: W. Texas
Posts: 5,569
The number on the box is GRV T10 921 194 24-3528 - AC/DC 12v-28v pack of 10. I bought 40 of these that were 12v only and had multiple issues right away. Bought the 12/28v bulbs and they have been OK. I had one lose some LEDs a couple of weeks ago and replaced it and then this one. Still, these are light years better than the OEM incandescent which burned the bases, were power hogs and put out lots of heat. I also installed larger (brighter) LEDs over the island, kitchen and counters. They are the same number with the exception of being 5050S instead of 3528. I have had no issues with them.

Note: these are all round multi LED bulbs
__________________
Danny & Susan wife of 50 years
2014 Ram 2500 6.4 4x4 CC
2014 Cougar High Country 319RLS
sourdough is online now   Reply With Quote
Old 12-12-2017, 07:14 AM   #6
JRTJH
Site Team
 
JRTJH's Avatar
 
Join Date: Mar 2011
Location: Gaylord
Posts: 13,064
LED technology is advancing at rapid rates. LED's that were "state of the art" in both power use and light production (lumens) just a couple of years ago are currently "old, wasteful and dim". All of the LED's that I bought 6 years ago, many of which are still in use in my Cougar, are being replaced as new technology LED's come on the market. They are 12 volt (back then, 12/24 volt LED's weren't even available).

LED sizing is typically used to refer to the LED. In other words, a 3528 LED is 3.5mm x 2.8mm and a 5050 LED is 5.0x5.0 mm in size. It goes with reason that the larger an LED the more light it will produce, so 5050 LED's are brighter than 3528 LED's. With the advancements in technology, even that is being "outdated by evolution of LED's"......

As for the availability of LED's, the market follows what is called "Haitz' Law" which essentially states that the technology will outdate itself every 36 months and today's best technology will be available as "base technologoy" in 18 months. http://www.electronicdesign.com/comp...y-and-practice

So, those LED's you bought 4 or 5 years ago may not be "getting dim" rather they may be "outclassed" by the new one you installed in the bedroom.

As for the "voltage regulated" LED's, (the ones listed as 12/24 VDC) they have a very complex, miniaturized circuit (IC) on the chip that is a voltage regulator/voltage limiter circuit. It converts the changing input voltage to a constant output voltage. This protects the actual LED chip making it much more reliable. (along with the advancement, that voltage regulator brings with it the possibility to cause TV reception interference) so not every advancement is without added problems. This is about where the current technology for RV's is positioned.

Be assured that even though LED"s are advertised to last 20,000 hours, the technology will outdate that LED assembly in the next 18-36 months, making it obsolete and even "antiquated"... Sort of like many of us who are in the retirement age group......
__________________
John



2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
JRTJH is offline   Reply With Quote
Old 12-12-2017, 07:34 AM   #7
JRTJH
Site Team
 
JRTJH's Avatar
 
Join Date: Mar 2011
Location: Gaylord
Posts: 13,064
Danny,

The LED's you bought, GRV T10 921 194 24-3528 - AC/DC 12v-28v pack of 10 "break down" as follows:

GRV is the manufacturer/distributor
T10 is the base style which supports the old nomenclature 921/194 incandescent base style
24 is the number of LED's on the assembly
3528 is the size of each LED
AC/DC 12v-28v is the acceptable input voltage that can be used to power the assembly
and they come in a package of 10 assemblies.

There are a number of brands of LED's GRV, GRB, ASIN, B00EDFM along with the incandescent bulb companies like Sylvania, OSRAM, GE, Phillips, etc.

Often (not always) the "name brand companies" like Sylvania, etc, if you take apart their LED assemblies, somewhere on it you'll find GRV or GRB or ASIN stamped on the actual LED board. So, even though a number of companies market "expensive and better LED" technology, typically they are just "rebranded current technology" from the basic Chinese manufacturers.

Most of the RV parts store brands like SuperBrite and CW brand are actually built by GRV and packaged either by GRV for CW or shipped to the US and repackaged by an American company with their name on the package. Unfortunately, there's not much difference in LED from brand to brand. Typically what you find on EBay or Amazon is the 18 month old technology and what you find in CW or from SuperBrite, etc, is closer to "the latest technology"... Otherwise, an LED is an LED..... Whether you pay $10 or $1 for it, there isn't much difference if it's the 18 month old technology. Where you can "pay for better" is by buying current technology, but even then, paying $10 for it, you'll still wind up with "old stuff" in a year or so......
__________________
John



2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
JRTJH is offline   Reply With Quote
Old 12-12-2017, 12:16 PM   #8
dcg9381
Senior Member
 
Join Date: Jul 2015
Location: Texarkana, TX
Posts: 1,047
My factory LEDs (I'm referring to the assembly, not the light emitting diode) died within 3 months - a total of 20 of them. Ended up tracking it down to the manufacturer who said, "yea, we had a bad batch" and shipped me 20.

Most of this stuff is made overseas. There's a technology side and then there is a reliability-of-components and assembly process side. I'll continue to use LED, but yea, they don't last forever..
dcg9381 is offline   Reply With Quote
Old 12-12-2017, 01:03 PM   #9
JRTJH
Site Team
 
JRTJH's Avatar
 
Join Date: Mar 2011
Location: Gaylord
Posts: 13,064
Quote:
Originally Posted by dcg9381 View Post
...Most of this stuff is made overseas. There's a technology side and then there is a reliability-of-components and assembly process side. I'll continue to use LED, but yea, they don't last forever..
The sad part, at least for most of us, is that we don't have any reliable way to avoid the "Chinese crap" and find the reliable components. It's for certain that price isn't any assurance. I've seen $15 LED's fail just as fast as the $1 ones.

Like you, I think that LED's are better than incandescent bulbs, even the "cheap, unreliable ones".....
__________________
John



2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
JRTJH is offline   Reply With Quote
Old 12-12-2017, 01:38 PM   #10
dcg9381
Senior Member
 
Join Date: Jul 2015
Location: Texarkana, TX
Posts: 1,047
Quote:
Originally Posted by JRTJH View Post
The sad part, at least for most of us, is that we don't have any reliable way to avoid the "Chinese crap" and find the reliable components.
Consumer reviews are a place to start (Amazon). Then again, even those can be faked (you need to watch the patterns). A good source to "filter" fake Amazon reviews is: https://www.fakespot.com/ - this fake review spotting became necessary in the last few years unfortunately. Still, better than nothing. And there is some consumer recourse if you're sold absolute crap that fails within a month or so of shipping... But you can't get your time and effort back.

The reality is that the vast majority of electronics manufacturing is done overseas. China CAN build some good stuff, but (IMHO) they tend to produce for bottom dollar unless otherwise directly specified (and double checked) in regard to components and assembly...
__________________

dcg9381 is offline   Reply With Quote
Reply

Tags
led, light, lights

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by the Keystone RV Company or any of its affiliates in any way. Keystone RV is a registered trademark of the Keystone RV Company.


All times are GMT -8. The time now is 07:19 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.