Hi Taruz. Wecome to beoworld.

Unless there was a specific US model, the MX1500 will actually only process PAL video signals (not NTSC).

Your computer is neither PAL nor NTSC as these standards don't apply to HDMI outputs.

Make sure the deltaco box is switched to PAL, and that the other switch is switched to COMPOSITE.

I presume the RCA to RCA cable is a triple cable, with red, white and yellow RCA plugs at each end? The yellow is for composite video, the red and white are for audio - also make sure you macbook is configured to route the audio out through the the HDMI port.

Kind regards,

Martin.

Hi Riverstyx, and thank you!

The Deltaco when I switch from PAL to NTSC doesn't really make a diffrence, it only adjusts the picture frame
position a little without any effect on the colors. 

I guess you are refering to the last part of my puzzle when you say "the other switch"
It is one of these (http://ecx.images-amazon.com/images/I/41KZeZMcVAL._SY300_.jpg)
so theres no option to switch to "composite".

Should I replace it with something else?

You presume right, it's red, white and yellow plugs in each end! Will try to route the audio like you said. 

Thank you kindly for you efforts :)

Hi Taruz,

No, I was actually referring to the second switch on the deltaco - the photos in the link you posted show one switch for pal/ntsc and one for composite/svideo. Perhaps yours is slightly different?

Martin.

No you are right! The deltaco has the switch. Still black and white though.

Im starting to think that I'm tuning the TV wrong. I'm pressing the "satelite" button, is there any way of tuning the AV channel on or is satelite the right button?  

Taruz wrote:

m starting to think that I'm tuning the TV wrong. I'm pressing the "satelite" button, is there any way of tuning the AV channel on or is satelite the right button?  

The manual says to press SHIFT then TV to select the AV input so you could try this. Not sure if it will make a difference.

Composite (also known as CVBS) video signals combine everything into one signal - chroma (or colour), video, blanking, and sync. In your case it is the chroma part of the signal that is not working - this could be because it is missing from the signal (this is why I said to check the switch was not set to s-video as s-video sends the chroma signal separately), or because the signal is far enough out of standard spec that the BV is not able to process it properly.

The next thing I would try is adjusting the output resolution that the mac sends to the deltaco box if this is possible. Ideally if the mac could be persuaded to output a 576i signal that would avoid the need for the deltaco box to carry out any downscaling and might bring the signal timings into spec if this is the issue.

Martin.

maybe use: https://www.amazon.ca/Wmicro-DisplayPort-Composite-Converter-notebook/dp/B00ID3SP30

it's a device that converts displayport to SCART (pal / NTSC selector) hope that helps to bring back the color.