Convert MCA into MCA-Plus (Video-In retrofit tutorial)

[Go4IT]

The parts of the lower half are:

1x 0 Ohm (0402)
3x 220 Ohm (0402)
3x 1 kOhm (0402)
1x 47 kOhm (0402)

1x 100 pF (0402)
1x 1,0 µF (0805)
1x 4,7 µF (1206)
1x 10 µF (1206)

2x BLM18AG (0805)

1x LMH6601 (SOT323-6)
1x MAX8880 (SOT23-6)

video-in_bo_parts7.jpg

Wow - we're nearly done!

[Go4IT]

And now the final parts of the graphicsboard. We put them in two steps, the smallest ones first:

1x 0 Ohm (0402)
1x 56 Ohm (0402)
1x 150 Ohm (0402)
1x 1,5 kOhm (0402)
1x 33 kOhm (0402)

1x 47 pF (0402)
1x 100 pF (0402)

1x BLM18AG (0805)

1x BC847 (SOT323)

video-in_bu_parts8a.jpg

Solder the cap and coil at last by hand:

1x 10 µF (1206)
1x 3,3 µH (0805)

video-in_bu_parts8b.jpg

TATAA! We're done with the graphicsboard, time for a first test

[Go4IT]

Put the graphicsboard back onto the display, fix it with one or two screws:

video-in_gp-mounted.jpg

Attach all the cables.

Now after the front is prepared, it's time to look at the RF-input on the mainboard. Here you find the place of the internal connector plug:

video-in_bo_rfcon-pads.jpg

We'll come to this later, but for now we just want to test!
So first we need an video-source. You can use any common reverse parking camera like this one:

video-in_test_revcam.jpg

But in fact it does not matter, because the ADV is capable of nearly any S-Video source (FBAS) you can provide. This could be a camera, camcorder, smartphone, PC, or whatever you have at hand. I use a VGA to S-Video converter attached to my laptop.

Because S-Video sources usually have a female yellow Cinch plug, i cut a common audio cable with male Cinch connectors in two and solder one side directly to the pads:

video-in_rf-testplug.jpg

Then mount front and mainboard-parts, apply power and CAN-Bus to the quadlock. Use some device to send CAN messages at 125 kbit/s (MM-CAN). Here is my test-setup:

video-in_test-setup.jpg

Then poweron the device and enter code (fun-fact: the video will be shown even if device is locked). Now send these CAN messages:
ID: 285, LEN: 3, DATA: 60 00 00, PERIOD: 125 ms => this is for "ignition on"
ID: 433, LEN: 8, DATA: 00 00 00 02 00 A0 00 00, PERIOD: 1000 ms => this is for "reverse gear set"

At this moment we should have a picutre... aaaand (drum roll) ...

video-in_test_works.jpg

TATAAAA - IT WORKS !