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ncc1701d
Joined: 08 Aug 2007 Posts: 187 Location: sweden
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Link Posted: Thu Aug 09, 2007 12:39 pm Post subject: ATI 8500 mod? |
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I remember reading on AVS forum a long time ago how to modify the
ATI 8500 card to perform better image quality.
But i can't find the info again.
I had something to do with removing capacitors and/or resolder resistors if i'm not remembering wrong.
I would like to do that mod now..
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AnalogRocks Forum Moderator
Joined: 08 Mar 2006 Posts: 26690 Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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Link Posted: Thu Aug 09, 2007 3:25 pm Post subject: |
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It was probably the Mike Parker mod. See the NEW 1.4 version here.
http://mpmods.com/MP1-4.shtm
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ncc1701d
Joined: 08 Aug 2007 Posts: 187 Location: sweden
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Link Posted: Thu Aug 09, 2007 7:46 pm Post subject: |
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Hmm the one i am looking for was free.. the follow up to the ATI 7500 mod.
I know there was descritions of what to remove complete with pics of it.
It was i think a removal of some filters that would make image clearer in very high resolutions.
_________________ BG1208 and BG1208/2
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kal Forum Administrator
Joined: 06 Mar 2006 Posts: 17860 Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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Link Posted: Thu Aug 09, 2007 8:08 pm Post subject: |
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You're talking about removing the LC filter right before the VGA output.
Yes, that's possible. I've done it on a number of video cards in the past.
What you do:
Bypass [short] any inductors (L)
Remove [open] any capacitors (C)
There will be one or two of each on each of the RGB lines. Use a voltmeter/continuity meter to measure back from the VGA plug to find what you need to do.
Stop when you hit the 75 Ohm terminating resistors.
Every video card model will have a slightly different layout so unless you get pictures of the EXACT model you're looking for, pictures are not going to be very useful. Ie: You can't use pictures of a mod'ed 7500 to show you where the LC parts are on an 8500.
Kal
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ecrabb Forum Moderator
Joined: 13 Mar 2006 Posts: 15909 Location: Utah
TV/Projector: JVC RS40, Epson 5010
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Link Posted: Thu Aug 09, 2007 9:18 pm Post subject: |
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I bet if you posted a nicely detailed macro shot of the front and back of the output section of the particular card you'd like to mod, some of the smarty-pants around here could point out what you need to change.
SC
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ncc1701d
Joined: 08 Aug 2007 Posts: 187 Location: sweden
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Link Posted: Thu Aug 09, 2007 10:20 pm Post subject: |
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Thanks.. this was what i was after.. i will post pics tomorrow.. nighty time here now..
kal wrote: | You're talking about removing the LC filter right before the VGA output.
Yes, that's possible. I've done it on a number of video cards in the past.
What you do:
Bypass [short] any inductors (L)
Remove [open] any capacitors (C)
There will be one or two of each on each of the RGB lines. Use a voltmeter/continuity meter to measure back from the VGA plug to find what you need to do.
Stop when you hit the 75 Ohm terminating resistors.
Every video card model will have a slightly different layout so unless you get pictures of the EXACT model you're looking for, pictures are not going to be very useful. Ie: You can't use pictures of a mod'ed 7500 to show you where the LC parts are on an 8500.
Kal |
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kal Forum Administrator
Joined: 06 Mar 2006 Posts: 17860 Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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Mark_A_W
Joined: 15 Mar 2006 Posts: 3068 Location: Sunny Melbourne Australia
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Link Posted: Fri Aug 10, 2007 4:40 am Post subject: |
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8500????
Well, I guess it is expendable..
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AnalogRocks Forum Moderator
Joined: 08 Mar 2006 Posts: 26690 Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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Link Posted: Fri Aug 10, 2007 4:58 am Post subject: |
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Hey the 8500 was a top of the line card at one time. With craptastic drivers but I digress.
_________________ Tech support for nothing
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HD done right!
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ncc1701d
Joined: 08 Aug 2007 Posts: 187 Location: sweden
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ncc1701d
Joined: 08 Aug 2007 Posts: 187 Location: sweden
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Link Posted: Fri Aug 10, 2007 12:40 pm Post subject: I got it. |
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I found the L'c and c's. shorted the coils and removed the caps.
Wow... id did something wonderful for my image in 1080i..
Clearly visible improvment in readability of text on the desktop.
Much less fuzziness.
Thanks all..
_________________ BG1208 and BG1208/2
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robnec
Joined: 27 Apr 2006 Posts: 87 Location: NYC
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Link Posted: Fri Sep 28, 2007 4:23 am Post subject: |
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Hello. Ncc can you circle all removed components on the board. Robert.
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ncc1701d
Joined: 08 Aug 2007 Posts: 187 Location: sweden
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Link Posted: Sat Sep 29, 2007 10:48 am Post subject: |
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It's those 9 components to the right of the two big caps left in the "front" image.
_________________ BG1208 and BG1208/2
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