Amiga 1200 video output problem. Please help!

[Homer]

Hi amigalover,

Which country are you in ?

[amigalover]

Hi amigalover,

Which country are you in ?

Hi Homer

I live in Uruguay, South America

[Gulliver]

Why dont you try your Amiga with another TV? Preferably a relatively modern one, these are nearly allways supporting PAL and NTSC alltogether, you just need to pull a switch or access the OSD menu of the TV and change its configuration.
You must be sure which TV standart is actually using your TV, so that we dont wrongly declare broken your Amiga built-in modulator or something else.

By the way, i am in Chile so, if you require any help you can PM me and i can talk you through this in spanish if it is easier for you.

[marcfrick2112]

Hi Amigalover,

I'd also suggest trying another TV. The 'greenish tint' you describe has me at a loss, but the back and white image makes me thinks it's some PAL/NTSC problem, as mentioned. Always check the simple stuff first before suspecting your Amiga. You're in Uruguay? Cool, I just sold an A500+ service manual to a guy in Uruguay.....

Good luck with getting this fixed up... and when you can, get that hard drive replaced...

[amigalover]

Why dont you try your Amiga with another TV? Preferably a relatively modern one, these are nearly allways supporting PAL and NTSC alltogether, you just need to pull a switch or access the OSD menu of the TV and change its configuration.
You must be sure which TV standart is actually using your TV, so that we dont wrongly declare broken your Amiga built-in modulator or something else.

By the way, i am in Chile so, if you require any help you can PM me and i can talk you through this in spanish if it is easier for you.

Hola, gracias por tu ayuda, no sabia que eras de Chile si no te hubiera hablado en español desde el comienzo.
Mi TV es moderno, es un Goldstar made in Korea, con entradas RCA video in y audio in atrás. He probado todas las formas de conectar la Amiga 1200 al televisor, la Amiga 1200 resultó ser NTSC siguiendo las indicaciones que me diste de mirar el número en el oscilador, pero el televisor supongo que será NTSC modificado a PAL. ¿ Cómo se hace para acceder al menu que mencionas en el Televisor y que permite elegir NTSC o PAL ? eso lo desconocía......A esta altura me parece que algo está mal en el chip de video de mi máquina, porque estoy seguro que hace pocos días vi la imagen por el TV a todo color, y ahora sale verdosa...tengo la máquina en venta, me da mucha pena, pero no puedo gastar mas dinero en ella, gasté una fortuna y ya no queda service en mi país, hace años que cerraron, si la conservo o encuentro otra solución te consultaré, mientras tanto me mantengo en el mundo Amiga, que no pienso abandonar, usando "Amiga Forever" con el emulador WinUAE, y WinFellow para juegos, en mi PC, no es lo mismo pero es lo mas parecido ! Gracias por todo y saludos cordiales!

[amigalover]

Hi Amigalover,

I'd also suggest trying another TV. The 'greenish tint' you describe has me at a loss, but the back and white image makes me thinks it's some PAL/NTSC problem, as mentioned. Always check the simple stuff first before suspecting your Amiga. You're in Uruguay? Cool, I just sold an A500+ service manual to a guy in Uruguay.....

Good luck with getting this fixed up... and when you can, get that hard drive replaced...

Hi

As I said to "Gulliver" from Chile my TV set is modern, it is a korean Goldstar with video in and audio in RCA jacks on the back. I am afraid the video chip of my Amiga has something wrong, it should display full color not a greenish image through the composite jack! Moreover I had my hard disk broken yesterday, lost four or five pins of the connector while trying to fix it, so I would have to replace it, just in case how much does it cost a 2.5"" Seagate hard disk with enough capacity, say more than 80 mb, nowadays ? Just to make up my mind about what to do. Thanks in advance!

[Gulliver]

Goldstar es una marca un poco viejita, fue rebautizada a LG hace ya mucho tiempo. Lo mas probable es que el TV haya sido reconvertido a PAL y no se pueda cambiar de norma.
En todo caso, proba con el control remoto de la TV para ver si aparece algun menu en pantalla que permita hacer el cambio de PAL a NTSC.
Te ofrezco, si te interesa, un modulador A520 PAL gratis, solo te pediria que me pagues el costo de envio a Uruguay que es menor a diez dolares americanos, tendria que averiguar cuanto exactamente.

In English:
Goldstar is a little bit old brandname, it was renamed LG long ago. The most probable thing is that the TV has been reconverted to PAL and you cant change the standart.
Anyway, you should try with the remote control of the TV to see if some kind of on screen menu appears that allows you to change from PAL to NTSC.
I am offering you, if you are interested, an A520 PAL modulator for free, i will only ask you that you pay the shipping cost to Uruguay that is less than 10 USD, that i will eventually have find out the exact amount.

[amigalover]

Goldstar es una marca un poco viejita, fue rebautizada a LG hace ya mucho tiempo. Lo mas probable es que el TV haya sido reconvertido a PAL y no se pueda cambiar de norma.
En todo caso, proba con el control remoto de la TV para ver si aparece algun menu en pantalla que permita hacer el cambio de PAL a NTSC.
Te ofrezco, si te interesa, un modulador A520 PAL gratis, solo te pediria que me pagues el costo de envio a Uruguay que es menor a diez dolares americanos, tendria que averiguar cuanto exactamente.

In English:
Goldstar is a little bit old brandname, it was renamed LG long ago. The most probable thing is that the TV has been reconverted to PAL and you cant change the standart.
Anyway, you should try with the remote control of the TV to see if some kind of on screen menu appears that allows you to change from PAL to NTSC.
I am offering you, if you are interested, an A520 PAL modulator for free, i will only ask you that you pay the shipping cost to Uruguay that is less than 10 USD, that i will eventually have find out the exact amount.

Si, en realidad tienes razón, dije televisor moderno pero tiene como 15 años de comprado, lo compré nuevo, me refería a que por lo menos tiene las entradas RCA de video in y audio in.
Yo tengo un modulador A520 que funciona bien de otra Amiga 500 que tenía, pero ¿ hay moduladores PAL y moduladores NTSC ? El mio no se que norma es, pero tiene una palanquita arriba, que cuando conecté el modulador a la computadora y con un cable al TV, me cambiaba el color de la imagen desde el verdoso ese que te conté a blanco y negro, nunca a colores, ¿ la palanca será para pasar de Pal a NTSC o viceversa ?

[Gulliver]

No, la palanquita es para cambiar en la salida RF la configuracion para que funcione en canal 3 o 4.
Y si, hay moduladores PAL y otros NTSC.

[ElPolloDiabl]

Composite is monochrome output on the Amigas, not sure why. You need to connect it to the RF out/TV out.

I think what I did was plug the composite out of the Amiga 2000 to the RF in on the TV and got a B&W image. Must be something unique to Amiga and few consoles.

[spaceman88]

I think what I did was plug the composite out of the Amiga 2000 to the RF in on the TV and got a B&W image. Must be something unique to Amiga and few consoles.

Yes, the composite output of 2000's and 500's is B&W, the 1200 ( and I think 600) is colour.

[spaceman88]

@spaceman88

booting an Amiga and changing in the early boot menu (by holding both mouse buttons) from PAL to NTSC or vice versa, will not help. Let me give you the long explanation:

Video signals for television in North America are different from
those used in Europe. North America uses the NTSC system, and most
European countries, as well as many others, use the PAL system. Since
the Amiga uses video-based screen modes, they are made for the different
modes according to the country.

The main differences between the two modes are resolution and frame
rate. NTSC displays have 200 lines vertically, or 400 in interlaced
mode, and displays 29.97 frames (59.94 fields) per second (most people
round it off to 30). PAL uses 256, or 512 interlaced, with a frame rate
of 25 frames per second (50 fields).

If you have the ECS chipset, you can switch your display between the two
modes using the Screenmode Prefs program, in the Prefs drawer. You can
also switch from the default screenmode at boot time with the Early
Startup Menu, which you access by holding down both mouse buttons when
booting.

Some programs, most notably games, which are not fully OS-compliant,
only support one of the modes. Many of the games on Aminet, for example,
are PAL only. If you have an NTSC machine, you will be able to use most,
but not all, of them as long as you have the ECS or AGA chipset and at
least 1 MB of CHIP RAM.

This method of switching to NTSC or PAL modes is only used to make
software work which is designed for the other standard. It's not
sufficient if you want to use an Amiga with hardware video equipment
from the other standard. For this purpose, you would have to rework your
Amiga's motherboard to a high degree, e.g. change the main crystal and
the modulator.

Hope it helps you to understand it!

Hi,
I had my doubts whether switching modes would help, but it's so easy to do I thought it would be worth a try. I use scala MM300 from a CU Amiga cover disk, which I have to boot into PAL mode to run. My TV will not display the screen until I select "NTSC output" and hit "Run" in Scala, so it may not be a true PAL signal but something changes at the composite output.
Len

[tone007]

1000 also has color composite!

[tone007]

so it may not be a true PAL signal but something changes at the composite output.

RIght, PAL mode outputs 50hz and NTSC outputs 60hz, the change that doesn't happen is the color system, so basically when you select PAL mode on an NTSC 1200, you get NTSC-50.

I have an LCD TV here that sees 50hz and assumes PAL, so when it goes into PAL mode on my NTSC machines I get no color.