Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-24, 20:22

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

L22 measured end to end reads 38 ohms (like some other inductors on that board). My guess is that the short may be elsewhere; L19 is also shorted to the ground on one side (that one reads 38 ohms end to end).

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-24, 19:53

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No, I meant L22 (checked twice). I measured it to ground (specifically a hole where VGA connector screw goes), not end-to-end

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-24, 19:33

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here it is

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-24, 18:42

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@Roman555 No, it does not beep. Shall I replace it with exactly the same inductor? Or can I replace it with similar one just for testing? Multimeter shows some readings on multiple components when in continuity mode with pins 13 and 14, but no direct connection. I found it unusual that ground on VGA …

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-24, 16:14

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

One of sides of L22 is shorted to ground. I will try to make a diagram, but it will take me some time. I actually made a loop of solder wick in order to extend range of my multimeter when it comes to continuity. I tried touching every single solder joints on the board, when searching for vga's pin …

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Re: AOpen USB driver

Posted on 2022-10-23, 16:58

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by smoke86

in Marvin \ Software

in Marvin \ Software

It's not that simple. You have a bit troublesome chipset, but it shall work with W98. Follow this guide and let me know if it works for you: https://web.archive.org/web/20050110084538/ht … nd%20Tricks.htm

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-23, 15:36

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@rasz_pl Yes, pins 1 and 2 are indeed shorted (I know there shouldn't be a short there). I did not confuse pins, the short is also present on the solder joints of VGA connector. I don't understand what you ment by "do the "L44 L45 L46 and ending on the other side with L47 L48 L49 L50 L52", shall I …

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-22, 18:04

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, the result is weird. I numbered insulators 1 to 8 as on photo attached. So VGA pins beeps as following (on both sides): Pin 1 - 3, 5, 8 Pin 2 - 3, 5 ,8 Pin 3 - 6 Pins 13 and 14 - nothing anywhere (I actually tried to check with mulitiple components in vicinity, no match), althouth multimeter, …

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-21, 19:37

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh, there goes my lack of knowledge. You are right. I checked those in diode mode and one of them showed very low reading.

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-21, 18:20

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is it possible that more than one inductors beep (on both sides) on certain pins of vga slot? I am doing it on area of L23, L22 and above. I also found suspiciously low impendance (0,4 ohm) on L22. Others are >35ohm or over 2k ohm.

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-21, 06:44

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

are you testing with lcd or CRT monitors? can you make a picture? there is potential for V or H sync being broken The biggest SMD rectangles on the side of VIA chip all in a row starting with L44 L45 L46 and ending on the other side with L47 L48 L49 L50 L52. Additionally there is another block of …

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-20, 20:25

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I treated the chip with heat gun (set to 100 degrees Celsius), no effect.

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-20, 19:43

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, I have no technical education and I am not good at reading schematics (also I cannot identify a filter). I tried tapping a board several times, tried another monitor, no changes. I notice that dim pictures on the screen is a bit distorted like pixel clock and phase are set incorrectly. Maybe …

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-20, 19:20

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Diodes are ok. Cannot see anything crooked yet. Here's a photo of that area.

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-20, 19:09

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sorry, drain to ground is 4,46, not 4,74V

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-20, 18:55

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

- D11 pin 1 to ground voltage - >2,47V -Q4 drain to ground - > 4,76V -Q4 source to ground - > 2,49V

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-20, 18:23

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

D11 reference to (ceb703al, which looks like mosfet) source measured REALLY close to 0 (something like 0.009V). Does it means D11 is blown?

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-20, 09:25

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

D16 is 'MS 20' (Schottky diode?) D11 is 'TL 431A 9E33' (voltage reference?)

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-19, 21:43

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by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here it is. Besides, it looks to me like it is not getting enough output voltage.

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Re: Super Socket 7 Lucky Star 5MMVP4 onboard VGA is VERY dim

Posted on 2022-10-19, 21:08

by

by smoke86

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah, I'll give a multimeter a go over this. Not that this graphics is a thing worth saving, Riva Vanta TNT2 put in PCI slot makes mucha better job, but I just want that board to be 100% fine.

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