@paradroid
That little umsa VGA-Scart device is pretty cool, thanks for posting up the link. Quite impressive, although I note that the price does not include the 5v power supply, nor the VGA and male-male Scart cables. 29 euros is cheap enough to make it competitive and a real option to building one's own cable, but the add-ons make it less attractive. They could easily add 10-25 euros to the cost, depending upon where you get them.
I had a look at your link to that other Scart cable with the 1k ohm resistors on sync. that might actually be a solution to the vague problems I have with 100hz Loewe tv in my vertical cab. worth a try.
@lettuce if you bridge Scart 20 - 16 then you can bypass the 5v power altogether. trouble is, it only works for some tvs. it is quite easy to make this kind of cable so it is worth a try. I have several different types of vga-scart cables on hand to use when testing tvs.
@joe contra what is bc548b again?
joe contra
Zebidee
you will need the 100ohm resistor on the wire going into SCART pin 16
It's in the diagram.
yeeeaaaah! That's why I put the "the" in there. Just confirming that one needs to keep that one, even if you get rid of the other resistors & transistor in the diagram (ironically, I was trying to avoid confusion).
joe
make sure they are outputting on negative sync for both horz and vertical
I saw some cases where the card didn't give negative sync, and it didn't let change this option.
With my card there is no problem with that.
Yeah. Video cards for make are so cheap these days, so it is probably easiest to just buy a compatible ATI or other card. On the soft15khz thread there's is a link to a list of cards tested to be compatible with soft15khz, and this is a good place to start.
The nVIDIA cards have an option to adjust sync in the control panel software driver thingy. It has been a while since I have tried to use nVIDIA cards though.
When I used the powerstrip software, it always gave an option to adjust sync polarity regardless of the card.
That sync converter is pretty noice, but still a lot more trouble than twisting wires! I've managed to avoid sync converters for all of my cabs so far. Still, pretty good to be able to do it.