Does it work if you just hook up one of the LED boards?

Nope. Just makes em blink.

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

Aren't LDD drivers analog. Sounds like your hooking PWM controls to an analog driver.

They are 5v pwm

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.

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.

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

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

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.