How to make caffe latte delonghi magnifica older model with cappacino and latte settings on milk container

SOURCE: my delonghi magnifica is having a problem with

There are 'o' rings on the pipes (on machine - not milk container) where the milk container fits into. replace or clean them - should work like new.

SOURCE: Delonghi Magnifica Coffee Maker the milk is not

You did not state anything about descaling, but every now and then, I also add water and descaler to the milk container and use the "Frothing" program to run through the water and descaling-solution (double-click the Cappuchino button).
I have also noticed that the first cup (and sometimes even the second) will produce less milk, and not as well frothed milk as later cups. My theory is that the machine is warmer when producing later cups.
If possible, you could try to run two-three frothings of plain water through before switching to milk. I realize this is inconvenient, but it could be worth testing this to see if it helps. We luckily have two milk containers and keep one filled with water just for the purpose of heating up (or whatever we do :) the frothing system before serving the first cappuchino.
Good luck!

SOURCE: I have a Delonghi Magnifica

I purchased a unit second hand for my wife's birthday today. It's only 4 months old, got it home, tested it, same problem... No froth!

I've read all the posts here and all were very helpful troubleshooting guides however they did not solve the issue.

Understanding how the frothing mechanism functions is half the battle in figuring out the solution. It's a simple vacuum type system. No doubt you've read about checking the orings. This is definately the first thing to check however if this is not the reason then consider the following.

The larger of the white tubes that has the red and black oring inserts deep into its port on the tap. Why? It pushes steam past the milk pipe directly into the chrome frothing tube which causes a vacuum essentially drawing milk up it's hose creating the froth. What you can't see without further investigation is that on the underside of the tube centered between the red and black orings is a small hole. This hole is responsible for drawing the milk upwards. If this is blocked, and it probably is then no milk and no froth. Use a really small screwdriver to carefully clean the white tube both from the front and the little hole underneath.

So in conclusion. Any air leak between the red and black orings will prevent the vacuum required to draw milk up the tube and alternatively any blockage of the milk channel will also obviously prevent the flow into the frothing mechanism. Hope this helps.

SOURCE: I have just bought a Delonghi 680M. When I press

The coffee machine has standard settings for each program. What you seem to feel is not enough is the standard setting for Latte. You can always set it to your desirable quantity, either for milk or for coffee.

Refer to your users' manual for more :)

SOURCE: Delonghi Rialto 4500. The milk doesn't go trough,

I fixed this problem on my Magnifica by gently scraping the scale away from the inside of the coupling (clearing the hole of scale and debris)