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Led trouble

Posted: Sun Jul 19, 2015 3:43 pm
by Kakorb
I recently bought some v2 led arrays from Dave at nanobox two ldd700 drivers on a board and a 90w 48v power supply. I tried to code my ato to dim so that I only put 5v to the Ldds. When it's all hooked up the LEDs just blink or flash. Never dim nothing just blink. So I hooked it up to my pwm dimmers at 10v and manually dimmed. Did nothing. Just blink. I don't know what is wrong with this setup but I can't figure it out

Re: Led trouble

Posted: Sun Jul 19, 2015 7:42 pm
by cosmith71
Do you have a link to what you bought?

Re: Led trouble

Posted: Mon Jul 20, 2015 3:26 am
by Kakorb
No. It was used. I emailed him for stats on the LEDs Looks like six blues on each array five whites a lime and maybe missing some. Two arrays. He sent two mean well 700ldd h on a driver board and a mew well power supply. Supply is mad 90 watts 48v and like 1.6 amps. When I hook it up the power supply beeps and green light blinks which is what is causing lights to blink I believe. Voltage drops going into driver from power supply. Would I have to use a certain power plug for the dimmers to work even though it's a common ground from pwm to power

Re: Led trouble

Posted: Mon Jul 20, 2015 4:03 am
by cosmith71
Post some pictures of the setup. What happens if you don't have any PWM input?

Re: Led trouble

Posted: Mon Jul 20, 2015 5:08 am
by Kakorb
They blink. I will when get home. I took resisters off back of board so drivers should light at 100 percent too and they blink

Re: Led trouble

Posted: Mon Jul 20, 2015 5:22 am
by cosmith71
Sounds like either a bad power supply or something in the setup is overloading it.

Re: Led trouble

Posted: Mon Jul 20, 2015 7:42 am
by Kakorb
How do u test for a bad power supply.

Re: Led trouble

Posted: Mon Jul 20, 2015 11:27 am
by cosmith71
You can disconnect the load and check the voltage to make sure it's correct, but that still may not help if it's only failing under load. Post a picture of your wiring.

Re: Led trouble

Posted: Mon Jul 20, 2015 4:59 pm
by Kakorb
It's puts out what it advertises. What is a good pic uploading site

Re: Led trouble

Posted: Mon Jul 20, 2015 5:19 pm
by cosmith71
You can just attach them here.

Re: Led trouble

Posted: Tue Jul 21, 2015 3:11 am
by Kakorb
Right side.

Re: Led trouble

Posted: Tue Jul 21, 2015 3:14 am
by Kakorb
Left side. Try get better ones. But the wires between the arrays are opposite the hookup wires.

Re: Led trouble

Posted: Tue Jul 21, 2015 4:37 am
by cosmith71
Also need to see the wiring for the power supply and driver board.

Re: Led trouble

Posted: Tue Jul 21, 2015 3:47 pm
by Kakorb
The wiring of the power supply confuses me cause white should be neutral but it just trips power supply and beeps. Wired this way they blink

Re: Led trouble

Posted: Tue Jul 21, 2015 4:08 pm
by cosmith71
Is the cable at the bottom of the picture (white and bare) connected to a DC power supply? Need to see that, too.

Re: Led trouble

Posted: Tue Jul 21, 2015 4:11 pm
by cosmith71
Was this wired when you bought it?

Re: Led trouble

Posted: Tue Jul 21, 2015 5:17 pm
by cosmith71
Here's what I'd do if it were me.

Make sure which pads are 2V- on the LED boards, since they're all marked 2V+.

Unsolder the wires from the LED boards. Make sure your power supply polarity to the driver board is correct. Power it up (with no LED's connected) and see if the power supply trips. If it doesn't trip, then your driver board is probably OK. If it does it could be a problem with one of the drivers, the driver board, or the power supply.

If it doesn't, connect 1+ and 1- on the driver board to 1V+ and 1V- on ONE of the LED boards and see if some of the LED's light up. Connect 1+ and 1- to 2V+ and (what should be) 2V- on the same board and see if the other set of LED's on the board light up.

Repeat this for the other LED board.

Do all of this again, but use 2+ and 2- instead.

The idea is to break it down and see where the problem might be.

--Colin

Re: Led trouble

Posted: Tue Jul 21, 2015 5:44 pm
by Kakorb
LEDs were wired. Think that's a miss print on board. Left sides are + rights are - only way they light on single strings Even with no LEDs power supply trips hooked up. I know for sure one ldd is junk. Yea. White and bare is power supply. I tried individual strings on both Ldds when they where good. Just blinks. Want a pic of power supply stats?

Re: Led trouble

Posted: Tue Jul 21, 2015 5:52 pm
by cosmith71
Sure. Post a pic of the power supply.

Can you send it back for repairs or return?

Re: Led trouble

Posted: Tue Jul 21, 2015 6:57 pm
by Kakorb
I might be able to. I need to know more about the led strings to order another and if it's bad. But I believe it may be

Re: Led trouble

Posted: Tue Jul 21, 2015 7:10 pm
by cosmith71
Does it work if you just hook up one of the LED boards?

Re: Led trouble

Posted: Tue Jul 21, 2015 7:24 pm
by Kakorb
Nope. Just makes em blink.

Re: Led trouble

Posted: Tue Jul 21, 2015 7:30 pm
by Kakorb
It's so frustrating. If I hook up one channel now string of 12 they are very dim before they were blinding. But if I hook up one side string of six they blink blinding bright

Re: Led trouble

Posted: Wed Jul 22, 2015 12:23 pm
by lnevo
Aren't LDD drivers analog. Sounds like your hooking PWM controls to an analog driver.

Re: Led trouble

Posted: Wed Jul 22, 2015 2:24 pm
by Kakorb
They are 5v pwm

Re: Led trouble

Posted: Wed Jul 22, 2015 5:57 pm
by cosmith71
With no PWM signal applied and the resistors removed they should run at full brightness. I think it's either a bad driver board, bad LDD's, or a bad power supply.

Re: Led trouble

Posted: Wed Jul 22, 2015 6:18 pm
by Kakorb
So I don't know much about the LEDs but I was looking at the new 180 48 from mean well. I was wondering if this would work. Will only be powering 2 Ldds for now. Would this be too much Also if I were to get a four up board and only used two places for the Ldds would that work or would I have to get a two place board for it to work. Being he sent me two 700s I will be getting them. Also considered get two 1000s too What would you recommend.

Re: Led trouble

Posted: Wed Jul 22, 2015 6:26 pm
by cosmith71
The important thing is to match the LDD amperage to what your LED's can handle. If they are 700 mA LED's and you hook them up to a 1000 mA driver you'll burn them out. I'd stick with 700's unless you know your LED's can handle 1000's.

You can get as big of a power supply as you want. The drivers will only draw as much as they need.

You can get a 4-up board and only use 2 slots. That's fine. Just hook up the sections you're using.

--Colin

Re: Led trouble

Posted: Wed Jul 22, 2015 6:35 pm
by Kakorb
So a meanwell nes 100 or 150 should work 48v cause that's what he sent. Should amp output matter on them cause there higher than the supply he sent I want to have enough power and not question that aspect but don't want fry anything. Thank you for all your help

Re: Led trouble

Posted: Wed Jul 22, 2015 6:48 pm
by cosmith71
More amps doesn't matter. The drivers will only draw what they need. Go with the 150-48 at the least. Then you'll have room to expand if you want to.