J2 jumper: Is it possible not to connect pin2?

If you only wanna use the RGB-output you don´t need the 5V.
If you want to connect something like a AV-board you need it.

Regards B-Tronic

Hmm, looks like you have no resistors between J2 and the RGB-connector of your tv...
The signal output of your card is 1,0V.
Therefore colors my be overridden.
Variable resistors with a range of 1KOhm may be help.

Hmm, a 5V wire is used to switch your tv into RGB-Mode.
If you connect all wires to your scart connector it may be you see only a composite picture.
When you don´t have connected Pin1 (composite) and you see something on your tv without using the 5V ,it´s a real RGB-picture.

I use a board developed by some people from vdr-portal, schematics and layouts can you find in this thread: Vorschlag für ein einfaches RGB / S/P-DIF Extension Board PROTOTYP FERTIG

A connection between tv and J2 is dangerous for your card without a protective circuit because of static electricity and overvoltage.
Always turn off your tv and your computer before connect or disconnect - the card can die faster than you expect...

EDIT: The board that i use don´t take the 5V from the J2, it uses the 5V from the floppy-connector.
I don´t have any experience about using the 5V from the card to switch the tv in rgb mode.

When you have only connected the wires for rgb it must be a RGB-picture.
In this case you don´t need to use the 5V, your TV must be switched to RGB when you see something.
You said you have bad colors when you use RGB, how it looks like?
Have you a extremely bright and contrast-less picture?
When i bridge the potentiometers at my board my tv show´s something like this...
When the level of red, gree and blue is at 0.7V, the TV show´s white.
In your case must be all color-levels at 1.0V.
You see something, but it is too much for the TV.
Look at this schematic, you will see there are resisitors between J2 and RGB.
I think this should solve your problem, but it is further dangerous for your card to connect a TV witout protection diodes.

May be you have the antenna-cable plugged to your tv?
This causes this effect at my tv - without the cable the line is not there.
Just an idea...

May be you've forgotten to connect the composite line (JP2 pin 1 to SCART pin 20)? This will be needet to transfer the synchronisation signals. In addition there must be nothing connected to the instant composite out of the ff.

??? Do you know this?

habichthugo

Oha, hab ich wohl Mist erzählt...
Wusste nicht das der Composite Ausgang auch für RGB benutzt wird.
Aber ich habe das dumme Gefühl das rumgespiele ohne Schutzschaltung wird ihn wohl noch im Laufe des Tages recht unglücklich machen. :-/

SvenGWK / darkblue
Well - who is working on his JP2 with a soldering gun should know the risks!

Maybe the RGB lines will overdrive the ADC of your new tv. Although there are problems with refection effects because of wrong output impedance. Both may be fixed by a 75 ohm resistor from each RGB line to ground.

Additionaly some problems may be left because of harmonics generated by the ffs dac. To avoid this, you may build an filter like discribed here...