Author Topic: Supergrafx white screen  (Read 773 times)

Jeff

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Re: Supergrafx white screen
« Reply #15 on: November 08, 2016, 04:12:22 AM »
I have has a good look at the pin conecter and it does not look the best.Does anyone know where I would get a replacement.Think that is worth a try.I am in the UK but don't mind if I have to source one anywhere.

Jeff

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Re: Supergrafx white screen
« Reply #16 on: November 08, 2016, 04:27:13 AM »
Does anyone know where I can get a replacement pin conecter from?that's worth a try.I am in UK but don't mind if I have to get one from elsewhere.Thank you.

Jeff

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Re: Supergrafx white screen
« Reply #17 on: November 08, 2016, 04:35:41 AM »
I have a core grafx also and wonder if the pin conecter is the same as in the supergrafx?I could use the core as a donor for the supergrafx?

BlueBMW

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Re: Supergrafx white screen
« Reply #18 on: November 08, 2016, 09:12:28 AM »
Unless you have bent / damaged pins, its usually not necessary to change out the card slot itself.  The Supergrafx card slot is unique in its shape compared to the other systems.  You might be able to make something work, but a direct replacement would have to come from another supergrafx.  It may be worth checking continuity on each trace from the hucard slot pins back to wherever they go.  Like steve and I said, cracked boards are rediculously common on the Supergrafx and it can sometimes be hard to find.  Even a tiny crack can break a few traces but barely be visible through the solder mask.  Best of luck!
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schweaty

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Re: Supergrafx white screen
« Reply #19 on: November 08, 2016, 09:45:18 AM »
Shine a bright light underneath the board.  Any cracks will be much easier to see

Jeff

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Re: Supergrafx white screen
« Reply #20 on: November 08, 2016, 06:05:35 PM »
Thank you for that,I will get the traces checked out and closely inspected for cracks.

schweaty

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Re: Supergrafx white screen
« Reply #21 on: November 09, 2016, 12:36:02 AM »
If you want to cover your bases as far as the card slot goes, you could reflow the solder on the connections, but that would be as far as I would go

Jeff

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Re: Supergrafx white screen
« Reply #22 on: November 09, 2016, 05:18:17 AM »
Hello,after all of your advice and knowledge I have left the idea of it being the card slot alone.I shone a torch behind the board and no cracks.But I did spot 2 wires adrift where the account power joins to the main board.These wires were intact before but maybe barely.I will get them re soldered and hope that is the solution.All of your help has been great.

thesteve

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Re: Supergrafx white screen
« Reply #23 on: November 09, 2016, 05:32:30 PM »
if you do have a pin bent in the slot that would do it
you could likely swap just the pin from a different slot

Jeff

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Re: Supergrafx white screen
« Reply #24 on: November 15, 2016, 09:25:23 AM »
Hello guys.I have had the loose wires re soldered on the ac power to main board.Still no joy.no cracks in pcb and traces all OK.No idea what else could be wrong.Graphic chip blown ??Any help would be most appreciated.

BlueBMW

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Re: Supergrafx white screen
« Reply #25 on: November 15, 2016, 10:13:06 AM »
Your best bet might be to send it to someone like thesteve to figure out.  We've covered all the usual suspects.
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Jeff

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Re: Supergrafx white screen
« Reply #26 on: November 15, 2016, 08:14:42 PM »
I will try that.Who is thesteve and where I he based ?

BlueBMW

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Re: Supergrafx white screen
« Reply #27 on: November 16, 2016, 04:44:38 PM »
Lookup his username on this forum.  I believe he is in California.
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thesteve

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Re: Supergrafx white screen
« Reply #28 on: November 17, 2016, 07:01:16 PM »
thats me, yes im in cali