Main > Monitor/Video Forum
How to use SCART for our hobby
Zebidee:
In that case you have three possibilities:
a) tested the voltage out-of-circuit (i.e. without the SCART plugged in your voltage readings will be wrong - the DMM will read 5v!);
b) your resistors are faulty - test your resistors separately, just use your multimeter on ohms setting; or
c) your Sony TV is not '75ohm terminated'.
In the last case (which seems possible as your other TV worked), try making a voltage divider like I described in my last post. This will give your TV the '75 ohm termination' that it needs, and you will get approx. 2.0 - 2.5v at SCART 16 to trigger RGB mode properly.
Zebidee:
Oh, I was having a close look at that pic you posted earlier. have you tried adjusting the pot in the top left corner marked "V.CENT"?
Zebidee:
Something else I noticed in your pic - there is a connector next to your flyback transformer that looks like it is about to fall off!
Atomicburner:
Hello Zebidee
(In that case you have three possibilities:
a) tested the voltage out-of-circuit (i.e. without the SCART plugged in your voltage readings will be wrong - the DMM will read 5v!);
b) your resistors are faulty - test your resistors separately, just use your multimeter on ohms setting; or
c) your Sony TV is not '75ohm terminated'.
In the last case (which seems possible as your other TV worked), try making a voltage divider like I described in my last post. This will give your TV the '75 ohm termination' that it needs, and you will get approx. 2.0 - 2.5v at SCART 16 to trigger RGB mode properly.)
- In this case it was the a, after all my resistors are fine, i measure them as you said, i did try the c, and the screen keeps black with white dots and roll less.
(Oh, I was having a close look at that pic you posted earlier. have you tried adjusting the pot in the top left corner marked "V.CENT"?)
- Yes, i had, and its to picture grow in vertical.
(Something else I noticed in your pic - there is a connector next to your flyback transformer that looks like it is about to fall off!)
-Thanx for the info, its already in place.
-I can only see something in screen if i join vga 13 or vga 14 to scart 16 or both 13 & 14 to scart 16, if i join 13 & 14 to scart 20, the screen appears black with white dots rolling.
Now, im going to buy some 75ohm resistor, do the test again, and then i say the results.
Thanks Zebedee and Sailorsat for the help u have giving me.
cheers.
Atomicburner:
Hello ...
I already tested with the new 75 ohms resistors...
The image is more stabilized, its less rolling picture. I think if i had some vertycal sync in my tv, now i could adjust... but i dont have...
Zebidee, i tried as you said with 2 resistors, but the 75 ohms, because if i put the 100 resistor i have 0,014 v reading in multimeter.
Im not electrician, but i think im reading well the multimeter.
I sent u a PM Zebidee.
Cheers..
Rui
:badmood: