Again Electronics 32VTTS 202
ZXNet echo conference «hardware.zx»
Hello, Ivan
Monique is buggy along the way... I had the 201st (small differences) - such (influence
border color to paper color) has never been observed. I even connected the PC to it
(via firewood) - there were no glitches. 201 and 202 - “the dream of a spektrumist of the 90s”
(c).
Hello, All
Good day!
In the dawn years for ZX, I was content with a b/w monitor. Questions about
There is no b/w signal formation and never has been.
Now I have the said monitor and problems have started...
As usual, when turning on the ZX we have a white paper and a white border. Changing the curb
to blue. It turns blue, but the paper turns somehow yellow. And
Same with all flowers. One influences the other. No matter how you twist the color balances
monitor - what happens... Maybe there is some adjustment method?
Oh, yes, I forgot: this is Leningrad-1, which I got a few years ago. Even with
521HT (whatever it is) assembly on RGB-Video output. I tried disconnecting the resistors,
mixing colors for b/w output - nothing has changed. I tried another clone,
the one without any transistors at the output is the same.
Does anyone know what the nominal color amplitudes are at the input of this monitor?
should there be?
Hello John North
Most likely there is interference in the RGB cord. Perhaps the RGB cord is too long, or you need to
Use a shielded cord (as for connecting a VCR).
Hello deathsoft
Almost unambiguously: the constant component of the video signal components is lost, then
there is a signal supplied through capacitors. The signal must go through resistors without
capacitors. Examine the computer circuit.
Hello, Ivan
I also have a similar problem, plus the convergence of the beams suffers greatly (red beam
highlights the point offset from the others). I couldn't overcome it.
Hello, Mikka_A
Mikka_A that the size jumps - I also remember that. I'm actually leaning towards a remake.
this monitor.
Syntal, but this is the first time in my life I’ve heard about the 128k test, I tried it on an emulator -
there really is such a thing. We need to expand to 128k and check.
Hello, Wlodek
deathsoft, indeed, a cord of about 1.2 meters, unshielded from a flat
cable. I'll try to make it normal.
Wlodek, judging by the monitor circuit, the constant component is already lost in the
monitor. At its inlet there are separation electrolytes. On the native scheme
Leningrad-1, as you know, has no electrolytes.
Hello Syntal
Syn> ....... the K50 series does not inspire confidence in me at all, besides
Syn> so many years have passed since its manufacture.
http://www.micronika.ru/docs/hitano/caps_hitano_al[1].pdf
choose to taste. :v2_wink2;
I; I usually put on the ELP series.
Hello, Ivan
> Good day!
>
> In the dawn years for the ZX, I was content with a b/w monitor. Questions about
> there is no and never has been a signal formation.......
we need to look at what reaches the cascades of guns.
It is advisable to make a divider on the probe and see what goes directly to the guns.
Monique is ancient..
Maybe the containers have dried out, maybe someone is planting something...
In general, we can cure the bug, we just need to tinker.
For this purpose, remember, I wrote a table in Vasik....
and rebuilt it quite well both in color and mixing.
True, the pipe was already sagging - when clicking, the white paper had a black border
black paper white border - image size jumped...
Hello, Mikka_A
The Spectrum-128 gives a quite good screen test, if after Reset you hold
Break - at least the geometry and colors can be lined up.
Hello, Ivan
> but this is the first time in my life I’ve heard about the 128k test, I tried it on an emulator -
> there really is such a thing. We need to expand to 128k and check.
In principle, there is no need to expand, just if possible, fill it in a new one
ROM the required part of the firmware from 128K and configure the monique, although such nonsense can be
write in BASIC-48 in 5 minutes or even better!
My VTC-201 also shows crap, no matter how hard I turn the potentiometers
The boards never achieved an acceptable geometry, and I’m not even talking about mixing.
I was looking for a circuit from 201, but everywhere on the Internet there are only ones from 202 lying around. Maybe someone has it?
Or can anyone advise which condensers should be replaced, K50 series
doesn’t inspire confidence in me at all, besides, so many years have passed since his
manufacturing.
Hello, Mikka_A
In general, if you look for testers of monitors for the ZX in bulk, there are some very good ones.
It seems TELETEST or TV-TEST. At one time I had these programs on
floppy disks. Polish-made programs.