Amiga.org

Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: jimmy_600 on January 26, 2004, 12:15:30 AM

Title: Amiga 600 display issue
Post by: jimmy_600 on January 26, 2004, 12:15:30 AM

I've posted before but unfortunately I wasn't able to get any solution to my problem. I have an Amiga 600 which I purchased second hand. The computer works fine apart from the fact that the display does not "sit" squarely on the TV screen. I have tried at least three different TV's with no improvement and following advice from my last post I changed the display frequency in the startup options with absolutely no noticeable improvement. I even checked the FM box inside the Amiga to see if the display could be tweaked in any way... stuck for ideas now - can anyone help?

Title: Re: Amiga 600 display issue
Post by: Tomas on January 26, 2004, 12:19:46 AM

The america is made for your current tv format? ntsc for US/japan while Pal for most of europe.

Title: Re: Amiga 600 display issue
Post by: jimmy_600 on January 26, 2004, 12:56:17 AM

I am in the UK and the TV's I am using and the Amiga are all PAL standard.

Title: Re: Amiga 600 display issue
Post by: Matt_H on January 26, 2004, 01:02:30 AM

Sounds like the internal modulator might be fried. Do you have an RGB monitor you can try? Failing that, an A520 modulator? Plug that onto the RGB port and see if you still have problems.

Title: Re: Amiga 600 display issue
Post by: Cyberus on January 26, 2004, 01:09:14 AM

This is just an idea, but isn't there a little screw thing you can twiddle next to the RF output from the internal modulator? Might this somehow adjust the picture and make it better?

Title: Re: Amiga 600 display issue
Post by: jimmy_600 on January 26, 2004, 02:22:35 AM

When I tried this it altered the picture quality but not the position of the picture.  The quality itself is fine, but the picture is misaligned so that the top quarter of the screen looks as if it has been shifted upwards, leaving the bottom of the picture a third of the way up the screen. :-?

Title: Re: Amiga 600 display issue
Post by: jimmy_600 on January 26, 2004, 02:29:11 AM

I don't have an RGB monitor or modulator to try it with  :-(

Title: Re: Amiga 600 display issue
Post by: McNorris on January 26, 2004, 04:24:21 AM

I had the same problem. I don't have my A600 put back togather right now or I could tell you exactly how to remedy the problem.

But here goes a wing-ding. Somewhere in the computer's "control panels" folder there is a display adjustment apps that will let you center the V & the H. At least with Worchbench 2.1.

Hope this helps. PM me in a couple of weeks if you don't get it sorted out and I'll have my 600 going again.

Title: Re: Amiga 600 display issue
Post by: jahc on January 26, 2004, 04:48:53 AM

Try altering the "overscan" prefs.... but this wont change the display for most games though, just software launched from workbench.

Title: Re: Amiga 600 display issue
Post by: McNorris on January 26, 2004, 05:05:43 AM

Thats true.

I also am useing an old Apple II composite monitor that will let me move the V&H a slight bit.