Indivision AGA MKI graphical glitches

[-Acid-]

Please take a look at this video

[ Show youtube player ]

I bought this Indivision from a user on the forum a few weeks back and only got it installed a few days ago but I get these problems when using it.

I know the monitor is good and so are the 3 indi to vga cables i've tried with it. I've never used a soldering iron so besides basic advice what I need to know is what do you tech types think the fault is and is this fixable?

[SnkBitten]

My MkII had glitches like that and I reseated it on the Lisa chip and it nearly eliminated them. Also had to change a FBlit setting. I get an occasional glitch on smb transfers from my network storage but not internet downloads. Running Amiga HighGFX monitor and 1024x768 32 color workbench to Indivision AGA 1024x768 @75kHz resolution.

Try reseating and if using FBlit try disabling to test.

[-Acid-]

Originally Posted by SnkBitten

My MkII had glitches like that and I reseated it on the Lisa chip and it nearly eliminated them. Also had to change a FBlit setting. I get an occasional glitch on smb transfers from my network storage but not internet downloads. Running Amiga HighGFX monitor and 1024x768 32 color workbench to Indivision AGA 1024x768 @75kHz resolution.

Try reseating and if using FBlit try disabling to test.

Fblit not in use (though will be once I get it going) as you can see glitches on early startup screen before anything loads. I will try reseating it again when i get back around to it tomorrow and see what happens. Cheers.

[Jope]

You can try cleaning the lisa chip's pins with isopropanol and an old tooth brush..

[Vairn]

Sorry that you are having issues with the indivision.
I never saw it behave that way when I had it.

What revision is your mobo, have you tried cleaning it and resetting it?
It almost looks like something is interfering with it.

[paul1981]

Reseat it a few times after cleaning Lisa pins with IPA and see how that goes. Common issue on all socket-over-chip stuff.

[AlfaRomeo]

I have similar problems from time to time and all are related to the connecting socket, after some time I have glitches like that and to solve the problem I need to open the Amiga and reconnect the Indivision and only after some tries it works right again.

[golem]

Originally Posted by paul1981

Reseat it a few times after cleaning Lisa pins with IPA and see how that goes.

Waste perfectly good IPA on a computer?

https://en.wikipedia.org/wiki/India_pale_ale

[-Acid-]

I'll try cleaning it and reseating over the bank holiday weekend and report back.

[-Acid-]

Okay I tried toothbrushing the chip the Indi sits on and waited a while for it to dry (as the Indi would not stay on until it did). Nothing has changed I get the same glitches.

Does anyone have any other ideas? could it be a part that could be easily replaced?

[Vairn]

Do you have another mobo to test it on? or just the 1 a1200.
My mobo was the 1D4 with new capacitors and what ever other fixes AmigaKit do to mobo's.

[LoneWolf]

Hello I'm new to the forum but I would like to contribute on this discussion.

I have an A1200 with a Blizzard 1230 MKIV and a Indivision AGA MKII. When I first installed the Indivision it started working right at first but after 10 or so minutes it started glitching just as I can see on the posted video.

I live in the Caribbean so temps here are HOT! all year long. At first I added a small fan on top of the Indivision AGA, this solved somewhat the glitches but still I was getting some momentary artifacts that appeared ramdonly. So I added a heatsink to the Alice chip and that resolved the issues with video.

Now I can play for hours with no glitches at all.

Here are some pics of my setup, hope it helps

[-Acid-]

Originally Posted by Vairn

Do you have another mobo to test it on? or just the 1 a1200.
My mobo was the 1D4 with new capacitors and what ever other fixes AmigaKit do to mobo's.

I do but it's in a tower right and it has a Mediator blocking access to the video chip to install it. I will take it out soon and try it (it's recently been recapped as well), computer room has been a mess for a while which is why I went a bit quiet on the subject but i've got access to all of my Amiga's again now.