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Old 23 August 2016, 09:00   #381
mikele
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Originally Posted by tekopaa View Post
anyone tried this? Maybe they've improved quality a bit.
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Old 10 September 2016, 15:33   #382
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anyone tried this? Maybe they've improved quality a bit.
It seems to do the opposite of a GBS-8200. VGA signals to CGA/EGA/etc.
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Old 15 December 2016, 15:50   #383
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New here, and was wondering if theres a fix for the vertical jail bars on the GBS8200 (I have the 2013.10.12) yet? I plan on changing C11 for a tantalum bead, and replacing the electrolytics, but other than that, I don't know what to do to fix the jailbars
 
Old 15 December 2016, 18:11   #384
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Hi,

There is a newish fix: [ Show youtube player ]

I have done it but in the rush i did not do a before/after test and i had not used my GBS8220 for a while.

It seemed to help with 'snow speckles'. I had already changed the electrolytics for branded versions.
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Old 15 December 2016, 20:25   #385
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I'll do this copper tape fix too then. The biggest issues I have is the vertical jailbar interference and white speckles on 480p sources.

Here's a couple of photos I took to show the jailbars
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Old 19 April 2017, 18:46   #386
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Hi,have a this board what is the polarity for PSU 5v 2A?
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Old 06 March 2018, 10:28   #387
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Hi,have a this board what is the polarity for PSU 5v 2A?
+ in the middle

btw my experience with the GBS 8220 bought off ebay is that it does not work on any of my A500s (rev 6A PAL). Screen is garbled on Samsung S27B350 no matter what I do. FWIW it works on my XBOX ... component input

Last edited by Zuul; 06 March 2018 at 10:33. Reason: derp..great 1st post...necro
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Old 12 April 2018, 17:05   #388
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There are interesting developments happening again with the GBS82**

The original Raspberry Pi mods ended, but it has been taken up again quite recently. Now you can run custom firmware with a wireless based Arduino

https://github.com/ramapcsx2/gbs-control#
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Old 02 June 2018, 07:42   #389
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Got my GBS-8220 but those two legs are soldered together

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Old 04 June 2018, 09:05   #390
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Judging by the copper under those legs, they are supposed to be together anyway.
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Old 04 June 2018, 13:25   #391
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They should not be connected - well visibly.

The chip pin out has those two pins listed as P1.2 and P1.3 so they might not actually be connected within the chip.

If you are going to use Custom Firmware and piggyback off the chip you will want to clear the solder off, or the chip socket will not fit.




Last edited by Higgy; 04 June 2018 at 13:30. Reason: Added pics of Custom Firmware module
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Old 08 June 2018, 10:42   #392
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Difference between A520 vs GBS8220 looks like SD vs 4K I'll try AD724 later too.



I did the shielding too, seems fixed some problems but jailbars are still visible somehow.
Grounded shielding didn't make any difference for me. I should put a small 5V fan on the heatsink too.





No way to get rid of the annoying deinterlacing of GBS?
I also found this, not sure if it works with amiga or not:
http://www.hollandcomputers.com/stor...ors-p10889.htm


Edit: I recommend to add a 5V fan on the heatsink. That big chip makes the whole board hot.


Last edited by RiP; 11 June 2018 at 20:02.
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Old 12 June 2018, 01:29   #393
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Hello,

Brand new here, would like to confirm that GBS-8200 v4.0 does indeed work with PAL Amiga 500 Rev. 8A.1. Just got this one going after 20+ years sitting in a closet.

http://imgbox.com/ivTDCGR7
http://imgbox.com/NrnuyazT

Now on to recapping
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Old 12 June 2018, 08:08   #394
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Originally Posted by KOzOK View Post
Hello,

Brand new here, would like to confirm that GBS-8200 v4.0 does indeed work with PAL Amiga 500 Rev. 8A.1. Just got this one going after 20+ years sitting in a closet.

http://imgbox.com/ivTDCGR7
http://imgbox.com/NrnuyazT

Now on to recapping
Welcome

It seems to be purple somehow..

P.S. Yours is A500+ not A500
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Old 13 June 2018, 04:38   #395
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Welcome

It seems to be purple somehow..

P.S. Yours is A500+ not A500
Thanks, good to be here. I like it here, seems like a chill place with tons of great info to dig through.

I have not done any shielding, or image adjustment as of yet. Plus I'm bit color blind, so no big deal

Also, this is not A500+. It is a rare beast that was build on A500+ board with proper chips, but 512K Ram and no real time clock or batter, and 1.3 Kick.
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Old 13 June 2018, 08:17   #396
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Thanks, good to be here. I like it here, seems like a chill place with tons of great info to dig through.

I have not done any shielding, or image adjustment as of yet. Plus I'm bit color blind, so no big deal

Also, this is not A500+. It is a rare beast that was build on A500+ board with proper chips, but 512K Ram and no real time clock or batter, and 1.3 Kick.
Try to increase the Blue channel here or reduce Red:



Interesting, you can also add those missing chips easily.

Edit: buy a DB23 connector or use DB25 and cut two pins of it for RGB video out, better that floating wires
Don't forget to use a resistor for the CSync:


Last edited by RiP; 13 June 2018 at 08:26.
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