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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Englyst on August 09, 2006, 07:07:38 PM

Title: Indivision Scandoubler/Flicker Fixer problem
Post by: Englyst on August 09, 2006, 07:07:38 PM: Hi folks.

I've just bought the Indivision Scandoubler/Flicker Fixerfor my A4000 and I plugged it in and I can see the PAL Hires mode nicely on my LCD monitor. But when I go into PAL Hires Laced I get the following weird picture. The fields seems to have been offset to both sides. I've adjusted the phase trim screw to see if it helped but no go.

Here's the image showing my problem:

http://www.bitboy.dk/AmigaFlickerFixer.jpg

Can anyone help me getting that adjusted or somehow lead me in the right direction?

Thanks.
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: Effy on August 09, 2006, 08:21:39 PM: Indeed a strange picture. I tried to use the Indivision on a bare A1200 with my Medion 17" tft (Aldi) and used Super Hires Laced and the picture was as good as crystal clear ...
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: Brian on August 09, 2006, 08:23:48 PM: A stupid question but have you enabled the "phase trim"? If I'm not mistaking there should be a small switch next to the screw that need to be set correctly or the "phase trim screw" is ignored as far as I know.
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: Englyst on August 10, 2006, 03:33:14 AM: When I adjusted the screw the signal disappeared and then I turned it back and it reappeared. So I believe it's working. But I'll check the switch to see if it makes a difference.
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: Englyst on August 10, 2006, 01:56:34 PM: Well I cannot seem to see a switch on the end of the Indivision. Only a phase screw. Here's a picture of it:

http://www.bitboy.dk/FlickerFixer01.jpg
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: Framiga on August 10, 2006, 02:09:26 PM: try with an NTSC hireslaced mode. (only for testing pourpose)
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: Englyst on August 10, 2006, 04:09:12 PM: NTSC Hires Lace works fine. It's just PAL Hires Lace that gives me problems. Been adjusting the phase screw like a madman to get it right..
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: alexh on August 10, 2006, 04:48:36 PM: It's not something like you have a flat panel which doesnt like 50Hz at this res?

A lot of LCD monitors dont like 50Hz at the best of times.

It might be worth trying it on a CRT.
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: Englyst on August 10, 2006, 05:00:09 PM: Well I do have a 24" Samsung 16:9 LCD monitor that I use for it together with my PC. It was just a temporary solution. I'll put up another CRT monitor for the Amiga to see how it goes.
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: tonyvdb on August 10, 2006, 07:04:04 PM: It is my understanding that the "switch" you refur to is no longer on the last few runs of the scandoubler. Only the screw is on most of them now.
Pal is a hard one for LCD monitors to sync to so as suggested try a different monitor and see what hapends.
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: Noster on August 10, 2006, 07:41:57 PM: Hi,

I HAVE HAD THE SAME PROBLEM WITH MY INDIVISION and an A600. The solvage of this problem is very easy :-D
You can screw very far in both directions and after I tried to screw behind the stage where the picture has gone, I found another range with a clear hires lace picture. Try to turn the screw far (farer than ever before) into both directions.

Noster
Title: Re: Indivision Scandoubler/Flicker Fixer problem
Post by: Englyst on August 10, 2006, 08:43:15 PM: Thanks, I'll try to see if I can get it turned further. :) For now the NTSC Hires Laced resolution works.