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Re: Shop lights
Posted: Sun Dec 25, 2022 1:52 pm
by JSinMO
Well I guess I’m on the bandwagon too now, kind of! Mrs Clause snuck a present under the tree for me.
Rechargeable led lights. Not quite the shop lights you guys put up, but my goodness they’re bright! Says 3000 lumen for an hour or 1000 lumen for 3.5 hours before they need a charge. They claim it has a 5 year warranty so we’ll see how long they last. Can’t wait to try them out!
Re: Shop lights
Posted: Sun Dec 25, 2022 6:03 pm
by Eugen
Niiice present! Welcome to the club of bright lights Jeff!
Re: Shop lights
Posted: Tue Jan 24, 2023 3:27 pm
by ras101
Well, I guess I have an opinion here too. I always bought 4 ft florescent dual tube lights in the past, never gave a thought to type/quality,/ etc and my only thought was "how cheap can I get them! That has changed soo much since LED lights... I Only buy dual lights LED for basement/workshop! I always buy the best! yes I know that means I only buy from places like Home depot, Lowe's or a lighting store. Why? because I am looking for longevity and light output! I know, its a hard mix but that is what I want! period. Buying cheap (I tried that) only gives me a product I will replace very quickly as it fails but also I am fed up with having to rewire in the new fitting. Following that principle has worked for me.
Re: Shop lights
Posted: Wed Jan 25, 2023 8:58 am
by Harry
Yesterday I sold all of my 8’ fluorescent lights that I replaced with LED. I found these out at the curb with bulbs awhile ago. Fourteen lights most with bulbs for $80. The buyer drove for 1.5 hours to get them. Very interesting guy who restores cars. He showed me pics of some of his collection which are all Ford Model T’s.
Harry
Re: Shop lights
Posted: Thu Jan 26, 2023 8:02 pm
by FUTZ
ras101 wrote: ↑Tue Jan 24, 2023 3:27 pm
Well, I guess I have an opinion here too. I always bought 4 ft florescent dual tube lights in the past, never gave a thought to type/quality,/ etc and my only thought was "how cheap can I get them! That has changed soo much since LED lights... I Only buy dual lights LED for basement/workshop! I always buy the best! yes I know that means I only buy from places like Home depot, Lowe's or a lighting store. Why? because I am looking for longevity and light output! I know, its a hard mix but that is what I want! period. Buying cheap (I tried that) only gives me a product I will replace very quickly as it fails but also I am fed up with having to rewire in the new fitting. Following that principle has worked for me.
I agree. I think everyone and their brother are making LED lights and going to market with an unproven design. I will look for a good heat sink in future purchases.
I bought two tube type LED lights that failed within a year. I wonder if I could fix them. A Google search came up with repairing the standard screw-in LED's instead, but I thought I would give it a try.
A bulb failed recently so I thought I would try what I learned.
First I took off the diffuser
That revealed the "Black Dot of Death"
I Scraped off the silicon or whatever it is, and cleaned the metal. And then added a blob of solder to bypass defective junction
That's it. I left diffuser off because it is the major cause of retaining heat. It's been working for two weeks. The control board regulates the voltage (constant current) so it works fine with the bypassed LED.
And it was fun!
BTW, my LED tubes are toast!!!
Re: Shop lights
Posted: Thu Jan 26, 2023 8:56 pm
by Eugen
@FUTZ nice to know some can be fixed. Where did you get the LED tubes so I can avoid them.
Re: Shop lights
Posted: Fri Jan 27, 2023 10:27 am
by Gordy
FUTZ wrote: ↑Thu Jan 26, 2023 8:02 pm
ras101 wrote: ↑Tue Jan 24, 2023 3:27 pm
Well, I guess I have an opinion here too. I always bought 4 ft florescent dual tube lights in the past, never gave a thought to type/quality,/ etc and my only thought was "how cheap can I get them! That has changed soo much since LED lights... I Only buy dual lights LED for basement/workshop! I always buy the best! yes I know that means I only buy from places like Home depot, Lowe's or a lighting store. Why? because I am looking for longevity and light output! I know, its a hard mix but that is what I want! period. Buying cheap (I tried that) only gives me a product I will replace very quickly as it fails but also I am fed up with having to rewire in the new fitting. Following that principle has worked for me.
I agree. I think everyone and their brother are making LED lights and going to market with an unproven design. I will look for a good heat sink in future purchases.
I bought two tube type LED lights that failed within a year. I wonder if I could fix them. A Google search came up with repairing the standard screw-in LED's instead, but I thought I would give it a try.
A bulb failed recently so I thought I would try what I learned.
First I took off the diffuser
no diffuser.jpg
That revealed the "Black Dot of Death"
Black Dot of Death.jpg
I Scraped off the silicon or whatever it is, and cleaned the metal. And then added a blob of solder to bypass defective junction
solder blob.jpg
That's it. I left diffuser off because it is the major cause of retaining heat. It's been working for two weeks. The control board regulates the voltage (constant current) so it works fine with the bypassed LED.
led bulb working.jpg
And it was fun!
BTW, my LED tubes are toast!!!
I watched some of those videos.Thinking the "spot of death" was something even I could fix
BUT the Sylvania bulbs I opened up have the older style circuits potted into the base and reeked of smoked electronics. When I lifted the LED board a bit I see the burn/charred spot on the exposed part of the potted circuit board.
Heat; I saw some where they drilled large vent holes in the white base and the base area of the diffuser.
Another guy ID'd the two resistors on top of the LED board, they are of two different values and wired in parallel. He cut out the lower valued resistor, This showed lower power consumption and only slightly lower light output, which should extend the life quit a bit as most designs push the LED chips to the limit for max light output. I believe they call it planned obsolescence as the LED bulbs never last the rated hours
Gordy
Re: Shop lights
Posted: Fri Jan 27, 2023 7:19 pm
by MattA
The resistors on @FUTZ LED light are 18 and 33 ohms. The PCB looks like the aluminum type, very good for sinking heat away from components.
Re: Shop lights
Posted: Sat Jan 28, 2023 10:32 pm
by Gordy
MattA wrote: ↑Fri Jan 27, 2023 7:19 pm
The resistors on @FUTZ LED light are 18 and 33 ohms. The PCB looks like the aluminum type, very good for sinking heat away from components.
The heat can only move so far when the heat sink is surrounded by plastic with no vent holes.
Gordy
Re: Shop lights
Posted: Mon Jan 30, 2023 7:27 pm
by FUTZ
Gordy wrote: ↑Sat Jan 28, 2023 10:32 pm
The heat can only move so far when the heat sink is surrounded by plastic with no vent holes.
Gordy
Actually the cup that the board is sitting on is some kind of heat dissipater. I drilled through to make a vent and saw that there was an aluminum lamination.