Scandoubler problem

[SuperTurbo]

Yes. PAL is 50Hz Vsync, which is below the range you mention (56Hz-75Hz Vsync). So it will not work with the monitor you have.

My specs for my monitor says it has scanning frequency of 30-81kHz horizontal and 56-75Hz vertical (flascreen monitor syncmaster 930bf). And the backside of my other two monitors says 50/60Hz. Does this mean that none of these monitors will work with the Indivision scandoubler??
If so, can anyone recommend a somewhat new flatscreen monitor that will actually work with the Indivision?

[amigagr]

i think that the other 2 maybe can work with it. i test mine on my proview 17 flat monitor (30-98khz 50-160hz). it's fine.

[doctorq]

amije wrote:
i have the same mobo and it works fine all these years. i have test it with this scandoubler and it's ok. your problem is somewhere else.

You can't make such an easy conclusion! I have a MV1200 scandoubler, which works fine on my rev. 1D1 motherboard installed in my A1200 tower, but it doesn't work with the same rev. motherboard in my A1200 desktop.

[amigagr]

you are talking about a diferent scandoubler. i and SuperTurbo talking about the same scoundoubler which (mine) Matthew at amigakit test it at his a1200 too.

[doctorq]

I am fully aware of that. Even though it's the same scandoubler the two of you have, it doesn't mean that it will work on no matter which rev. 2B motherboard out there you use it on.

The same with my scandoubler; it works on one of my motherboards, but not on the other, even though they are the same rev. I'm not expecting it to work with all rev. 1D1 motherboard either.

[amigagr]

you are absolutly right but meanwhile and so far we (all here) adding some thoughts/ideas in progress based on the facts, trying to solve this issue. of course as you can understand some of them are faults hopping someone finaly will hit the right answear :-)

[whiteb]

You think this scandoubler is evil ?

I have an A1200 accelerator that works perfectly in an A1200 (3.0 kickstart) but refuses to activate its own RAM (or goes to pink screen) under Kickstart 3.1

3.0 workies fine
3.1 does not work.

Go figure.

I call it, Amiga's with attitude.

[amigagr]

:laughing:

[patrik]

@whiteb:

Might it perhaps be this card? (read bottom line of the notes)


/Patrik

[bertambala]

Hi SuperTurbo,

I bought an Indivision sd/ff from Amigakit this past February for a 4000 I got off ebay in January.  When I first hooked it up the screen was extremely jittery, so I adjusted the potentiometer slightly and the screen immediately went black.  No amount of adjusting made any difference at that point, so I thought the unit was faulty.

I kept trying to adjust the potentiometer in hopes of bringing back the picture, but no amount of adjustment seemed to make any difference.  In the process I was leaving the Amiga on for longer periods of time (30 minutes or more), and eventually I saw a picture - albeit a very jittery one.  Each time I turned on the computer the screen would be black for several minutes, but then would show a jittery picture which would settle down the longer the machine was on.  Over the next couple of days this transitioned to starting with a jittery picture rather than a black screen, and ultimately to a rock solid display from the moment I powered up.

I'm not sure what caused this strange behavior, but hopefully something as simple as leaving your machine on for a while will help like it did for me.  Good luck!