Solution for external Flicker fixer?

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roy_bates said:
djos said:
Btw, I discovered I have a SCART_RGB-to-Component transcoder in my old HT junk box that a mate had custom made to fix an issue with Topfield 5000pvrT's putting out oversaturated colours - might have to grab an Amiga to Scart cable and see if it chokes on the 15khz sync rate. :lol:
Click to expand...



give it a go and let us know how yopu got on:)
Click to expand...

Dunno if I want to waste $30 on a cable that might work (with my transcoder) instead of a GBS board that will work? :unsure:

If any Aussies have one and dont mind lending it I'll try it out.
 
djos said:
roy_bates said:
djos said:
Btw, I discovered I have a SCART_RGB-to-Component transcoder in my old HT junk box that a mate had custom made to fix an issue with Topfield 5000pvrT's putting out oversaturated colours - might have to grab an Amiga to Scart cable and see if it chokes on the 15khz sync rate. :lol:
Click to expand...



give it a go and let us know how yopu got on:)
Click to expand...

Dunno if I want to waste $30 on a cable that might work (with my transcoder) instead of a GBS board that will work? :unsure:

If any Aussies have one and dont mind lending it I'll try it out.
Click to expand...




your better of with a amiga rgb to scart cable and modify the cable to plug into the the 8 pin rgbs input.


i think johnim does the cables im not sure.
 
Snoozy said:
djos said:
Snoozy said:
Please do expand otherwise your comment will be rightly viewed as irrelevant :cool:
Click to expand...

I assume AJ is referring to the 4:3 pic being stretched to 16:9 (a massive no no in the HT scene). :picard
Click to expand...

That's just down to personal preference and can be altered at the flick of a button - i use snes and md in 4:3 and amiga in 16:9 :blased:
Click to expand...

Sacrilege I tells ya! ;)
 
roy_bates said:
djos said:
roy_bates said:
well its got a c/sync a v/sync and a h/sync but i think the v/sync is inverted,sorry if im being boring.:)
Click to expand...

not at all, im interested to know the details.

Btw, I discovered I have a SCART_RGB-to-Component transcoder in my old HT junk box that a mate had custom made to fix an issue with Topfield 5000pvrT's putting out oversaturated colours - might have to grab an Amiga to Scart cable and see if it chokes on the 15khz sync rate. :lol:
Click to expand...



give it a go and let us know how yopu got on:)
Click to expand...

Well I went diggin in the shed today and found it. :) Started a new topic so I dont hijack this one:

https://www.amibay.com/showthread.php?p=320867#post320867

PS. bought a GBS8220 today as well. :D
 
djos said:
roy_bates said:
djos said:
not at all, im interested to know the details.

Btw, I discovered I have a SCART_RGB-to-Component transcoder in my old HT junk box that a mate had custom made to fix an issue with Topfield 5000pvrT's putting out oversaturated colours - might have to grab an Amiga to Scart cable and see if it chokes on the 15khz sync rate. :lol:
Click to expand...



give it a go and let us know how yopu got on:)
Click to expand...

Well I went diggin in the shed today and found it. :) Started a new topic so I dont hijack this one:

https://www.amibay.com/showthread.php?p=320867#post320867

PS. bought a GBS8220 today as well. :D
Click to expand...




i'll take a look later tonight,thanks for posting.:)
 
OK,
I just got my 8200..
I wired it up..
Think I've mostly got it wired up, but having a problem.

I went with the recommended wiring on page 1 (or 2) of this thread.
Grey wire went to pin 10, combined sync.
But I get nothing on the screen.. ;-(

So, I hook grey up to 11 and 12, and I get a picture..
But it's bouncing all over the screen...
Sharp, but not stable at all....

I've got RGB hooked to 3, 4, and 5 and black to 16 GND.
Yellow not connected.

I tried it (as it, 11 and 12 to grey) on my other Amiga, and same thing. Nice, but bouncy picture. (Won't hold sync)
I suppose I need to wire grey back to 10 and try it on my other Amiga.
Maybe my 500 has a bad composite sync?
(But shouldn't wiring it to 11 and 12 be basically the same or ??)

Thanx,

desiv
p.s. I hooked the wires that came with the 8200 to a DB23 I desoldered from an A520, so it's pretty short wires.
Also, I'm using a 5v 2A adapter..
 
Well, tried everything I can think of....
Neither of my Amigas will do anything with composite sync (pin 10).
No scrambled image, just nothing.

If I tie pin 11 and 12 together to the composite sync, I can get an image, but the vertical just won't hold...

Looks like maybe I got a bad 8200, which is unfortunate because I've never had any luck with a sale from China where the part didn't work.

Oh well.. My luck strikes again..

Still got my 1084s..

desiv
 
Keep trying. I had loads of trouble getting mine to work, but did in the end.

Are you sure the PSU you are using is OK? The first one I used was my biggest issue and created an unstable image.

Whilst not the best method, try powering it from the Amiga's own 5v output from the rgb port. Works perfectly but not recommended to keep it powered that way forever. It will however let you know of the GBS is working.
 
desiv said:
OK,
I just got my 8200..
I wired it up..
Think I've mostly got it wired up, but having a problem.

I went with the recommended wiring on page 1 (or 2) of this thread.
Grey wire went to pin 10, combined sync.
But I get nothing on the screen.. ;-(

So, I hook grey up to 11 and 12, and I get a picture..
But it's bouncing all over the screen...
Sharp, but not stable at all....

I've got RGB hooked to 3, 4, and 5 and black to 16 GND.
Yellow not connected.

I tried it (as it, 11 and 12 to grey) on my other Amiga, and same thing. Nice, but bouncy picture. (Won't hold sync)
I suppose I need to wire grey back to 10 and try it on my other Amiga.
Maybe my 500 has a bad composite sync?
(But shouldn't wiring it to 11 and 12 be basically the same or ??)

Thanx,

desiv
p.s. I hooked the wires that came with the 8200 to a DB23 I desoldered from an A520, so it's pretty short wires.
Also, I'm using a 5v 2A adapter..
Click to expand...



have you got an ntsc amiga?


wire the grey wire back to pin 10 and, hold down the down button on the gbs(i think)until its led starts blinking.:)
EDIT:press the down button to scan for a signal hold for 5 seconds to reset system to defaults;)

also it wont work on the other sync signals comming from the amiga,as you have noticed.

hope this helps:)
 
Last edited:
OMG!
It's working!
You've over-ridden my bad luck!
(The above was posted from my tablet, so it didn't have much info..)

Thanx!

I swear I tried that, but I never saw the red light flash....

I have a rule with my techs at work. When you get a ticket, go thru the process, even if the other person has "already done those things."
(Especially if the other person is another tech)
And that applies to me as well.. I know I can get a bit flummoxed around electronics, so I figured I'd try it again.

I had left it connected to pin 10, so it was easy to test.
First time I tried it, nothing and no flashing red light.
Tried some other buttons, nothing.. Hmmm...
Then, I noticed that the red light was flashing...
What?? And in a few seconds.. Rock solid hand waiting for a disk image!!!!!!

So, maybe I just wasn't patient enough.
Maybe I had to select the screen I wanted (RGBS I think) and then hold the button down? Maybe??
Not totally sure, but it's working!
Yay!! Thanx again!

Now I need to order a DB23 plug with hood. That one from the A520 is just awkward (all the wires pointing down) and tough to remove...

desiv
As a side note, as bummed as I was last night when I thought it was broken...
I got to a point when I was saying, "Hey, I got to use my solder sucker and desoldered the 23 pin plug and that went pretty well.. So at the least, it was a good solder class..." ;-)
(I need to desolder a POKEY chip from a cart so I can place it in my CCII; and since the CCII was so expensive, I want to get that right... So building confidence.)
 
Last edited:
if you want to practice your soldering technique grab some old broken hardware,because it wont matter if it goes wrong its already............
 
Right lads, I've been going through this thread page by page, and my eyes are crossed at this point. To sum up, then...

  1. Order up the 8220
  2. Build the cable, following the schematic in post one. (But the need to use resistors is debated? And speaking of that image, does anyone have the full one, without half the labels cut off?) Or ask johnim really, really, REALLY nicely to build me one?
  3. Connect it to ye olde LCD monitor with a standard (?) 15 pin monitor cable
  4. Mess about with the four buttons as necessary
 
you're connecting to the RCA sockets, so the rest of the diagram really isn't needed...

mind you, I tried the same method on mine, and had an overly red, washed out image, same as when I tried a different video converter in this thread, and wasn't able to adjust it to be "correct"

https://www.amibay.com/showthread.php?t=30231

---------- Post added at 12:51 ---------- Previous post was at 12:27 ----------

having said that though... my 32inch LCD TV will sync and display the output from the A500 fed directly into the ypbpr input on the tv.... no GSB, no video converter...

only issue is once again, getting reasonable colour...

pinkwz.jpg


---------- Post added at 13:37 ---------- Previous post was at 12:51 ----------

I'm beginning to think if I get the resistor values correct, and also adjust the R, G, B settings on the tv (which it has) I may be able to get a pretty good picture...

flimbo.jpg
 
Another update?

I wired the amiga directly to the "vga" input on the tv, thinking maybe it was a scart in disguise (I've seen it labelled as "RGB" on some tvs, as well as "d-sub), and also the fact its clearly able to sync the 15khz using the ypbpr input...

Doesn't work, displays "unsupported" on the screen...

probably just build this circuit ;) simple enough...

http://eab.abime.net/showthread.php?t=49874
 
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