Genlock problem - Electronic Designs/Hama Sirius

[Framiga]

IIRC you have to push down (and take it pushed) the power button of the Sirius during the A2000 boot.

even if without doing this, the Amiga should start anyway and the Sirius should go in pass-throgh mode....

[Framiga]

so... it is long time since i've tried one of this Sirius (very good btw with its alpha channel capabilities) but i'm quite sure that you have to push a button during the boot sequence (don't remember which)

and AFAIK the Sirius have a black burst internal generator hence it shouldn't require a video signal connected to make the Amiga boot.

sorry but these are the only things a recall :-)

[Framiga]

your lucky (or quite).

i've found an old Amiga magazine review about the Sirius and i can confirm that the Sirius model, starts in that way (no clue about the Hama variant).

If you have an italian friend here you can download the full Amiga Magazine issue in pdf.

[Framiga]

you have to take it pushed for all the boot time startup (until the Amiga boots)

[Framiga]

the RGB cable in an Amiga so called "genlock" is a tricky component. If i've understood you correctly, the HAMA have a not shielded flat cable (that could be damaged due the age)

Try with a multimeter a continuity check test between the connector and the place where it is soldered (some of these cables carries a IC inside the connector, to compensate/trigger the external clock signal which is vital for a correct functioning)

good luck!

just for ... the EXTCLOCK (/XCLK) and CLOCK Enable (/XCLKEN) are the pins 1 and 2 of the RGB Amiga port/connector

RGB are the pins: 3-4-5
Composyte SYNC: pin 10