42 Watt LED Yard tare down recap ** How good is this switching power supply

[sam_sam_sam]

Here is the inside of one of my LED yard lights

[stj]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

red wire on the led panel needs resoldering,
so do most of the thrue-hole parts on the psu!!

other than that, it looks good.
nice layout, input filtering, ncc caps.

[redwire]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

It looks like a reasonable build, around 1W per LED.

I don't see how the LED board is bolted to the housing, for heat transfer.

Some cheap chinese fixtures just use the silicone grease. The LED's burn up.

[sam_sam_sam]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

We had a lightning storm yesterday and the other fixture does not work so I need to take that one apart to see what has happened to it

I will post a photo of the other 42 watt LED yard light they are both the same exact model

Here is a really shitte thing that did on this switching power supply the out caps are 220uf@50 volts there are four of them

The output voltage 42.5 really they could have use 63 volts one or 100 volts
I changed them to 63 volts ones

[sam_sam_sam]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

It looks like a reasonable build, around 1W per LED.

I don't see how the LED board is bolted to the housing, for heat transfer.

Some cheap chinese fixtures just use the silicone grease. The LED's burn up.

It uses the silicone grease and lot of it
It uses 6 screws to hold the LED Plate module to the housing
It uses off brand name China made capacitors

[sam_sam_sam]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

red wire on the led panel needs resoldering,
so do most of the thrue-hole parts on the psu!!

other than that, it looks good.
nice layout, input filtering, ncc caps.

I probably should have have done this but I need to put this light back up on the pole in the back yard where my cooking grills are

If I get the one that does not work right now fixed and working again

I will get all the resoldering done on both of them I will repost a photo of them

[CapLeaker]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

I am amazed... it actually isn't that bad, besides the silicon grease...

[sam_sam_sam]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

Yes they are nice lights and been used for about two years now with these China brand capacitors which I am surprised that it has worked this long

They go by the Honeywell Lighting and were sold at SAM Club I have not seen them sense the summer of 2016

You can find them at

https://www.homedepot.com/p/Honeywel...yABEgIuL_D_BwE

This is the capacitors that I used four of these ELXZ630ELL221MJ25S. ( LXZ ) 220uf@63 volts
I also used two these also ( LXZ ) 47uf@50 volts

[CapLeaker]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

some of this chinesium stuff is actually half decent! I have some flood lights and those are up there now also for about 2 - 3 years, no problems. Bought at Costco.

[sam_sam_sam]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

UpDate

Here is one of the chips on the backside of the board

https://cdn.badcaps-static.com/pdfs/...1fdeef964c.pdf

The other chip is a LM358. On the chip it just says ( 358 ) ST

The Optic Sensor is a EL017 on either side of the optic sensor there is a 47uf@50 volt caps




Where the rectifier are the soldering joints were very questionable also I pulled them out and checked them they had a 420 mill volts one the diode test mode

Look like they might be good but the area where they are mounted looks like it has gotten very warm before because it is brown looking

This is On the one that does not work I remove the transformer and found some very questionable soldering joints on the pins where the wires are soldered

I going to replace the the two 47uf@50 volt one and see what happens next

On the Heat Sink it has this

https://cdn.badcaps-static.com/pdfs/...c7a917eb6a.pdf

[sam_sam_sam]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

UpDate

I was able to fix the yard that did not want to work

I remove the transformer from the board and resolder the wires on transformer it self because some of them looked very questionable reinstalled transformer

I frist replaced the two 47uf@50 volts and put power to it and the LED module turn ON

Then I installed the four 220uf@63 volt caps and put the unit back together

I did redo the soldering joints that looked very questionable

I am very happy that I was able to fix this unit

Running time now 20 minuets

[stj]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

what's your outside temperature?

what concerns me with led lights is winters so cold the caps drop in value and summer heat that cooks the leds.

[sam_sam_sam]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

what's your outside temperature

95*F

Remember that they used no name capacitor in this switching power supply
I used automotive type capacitor in

So it should last a lot longer

[sam_sam_sam]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

I have done testing on brand name capacitors before and if they are good the different in ESR reading (cold 50* F to 90*F warm or more ) is only a 0.05 or less

Now on no name brands and high ESR value reading it can be like this (+ 1.0 or more)


UpDate

Did a burn in test over night and it is still working in the AM

As far as I am concerned it is repaired

[sam_sam_sam]

Re: 42 Watt LED Yard tare down recap ** How good is this switching power supply

It still working as of right now

The housing on this LED yard light only gets a little bit warm
surprisingly enough for as bright as it is

[sam_sam_sam]

Update unfortunately both of these yard lights had the same issue some of the LED light bulb do not light anymore on the panel and one of light fixtures the switching power took a really bad shit and is not worth repairing it so I bought new ones to replace them so only one of them the switching power supply still works if can find another 42 to 48 volt led module to use it in otherwise it just there for parts

The ones that I replaced them with I had to recapped them because they used some no name brand I never heard of