exxos finally in the game!

[exxos]

What was it? 😉

No 12V so TV didn't auto switch to scart :roll: :lol:

[exxos]

IMG_3338.JPG

[Icky]

Now we just need a pic of your favourite game :)

[rubber_jonnie]

Awesome.For.Sure :)

[exxos]

Now we just need a pic of your favourite game :)

IMG_3339.JPG

IMG_3340.JPG

Thing is, I can't see any of the cars. Its like the whole screen is like 50% darker than it should be. So I need to work out whats gone wrong there. Probably slight bias issue on the RGB drivers :roll:

[PhilC]

Looking good to me still. Well done.

[Icky]

Thing is, I can't see any of the cars. Its like the whole screen is like 50% darker than it should be. So I need to work out whats gone wrong there. Probably slight bias issue on the RGB drivers :roll:

Great game. Always makes me chuckle seeing your pink monitor :) - My daughter used to have one just like that.

This may be why I ended up reducing the RGB resistor values when sorting out my monitor cable.

[exxos]

This may be why I ended up reducing the RGB resistor values when sorting out my monitor cable.

I took out the 3 diodes in the RGB lines, (ups the voltage).. now I have a proper image, but now to bright! :lol:

IMG_3341.JPG

So diodes technically not needed :P

In light of what I said in the other thread, ultimately if we ran this offer regulator, it would help a little bit of interference on the drivers, and we could also put a preset to adjust the voltage, this way people could just set it to whatever brightness they wanted..

There will also, maybe just easier to go with the Falcon DAC instead..

[PaulJ]

My wife sees that TV she would have to have one!

[exxos]

I've been looking at the odd dot crawl/ interference on the video..

I added in some 50pF caps, on the RGB and H&Vsync lines, and the problem is indeed a lot less now.

I also noticed after doing the other brightness fix, that the horizontal interference on the desktop drag bar seems to be back again :(

IMG_3344.JPG

I have looked into this noise before, on a normal STFM as mentioned before elsewhere. But I think the problem is here that the slightest bit of noise on the RGB lines or power rail is actually been amplified by the RGB drivers.

On the Falcon, I never saw any of this interference, some hoping this is because of the Video DAC used. As mentioned, I have designed the board to use this chip, so it is strongly looking like that is the direction I will go in.

Going to try some caps on the RGB transistor bases next, to see what that does...

EDIT:

Did not fix the noise on the drag bar, interference was almost gone on the background green, but also it blurred the image a lot as well.. Not really surprised.