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Hardware Modding Soldering, deciphering datasheets, tricks and tips.

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  #1  
Old 01-06-2014, 11:38 AM
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Default ASRock 4Core DualSATA Frankenstein

This is the only reasonable mobo, that offers AGP cards overclocking.
But there are three problems with it:
1) big v-drop
2) OVP at vCore 1.8V
3) PWM is rather weak and I get quite stressed each time I put my QX9770 in it

I came up with idea to solder EPOWER or 8800 Ultra PWM to replace standard PWM of the board.

The board uses L6714D IC.

Has anybody tried something like that?

Desoldering the coils would do the job or should I do something more to make the board running and fool it, that everything is ok?

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Old 01-06-2014, 09:56 PM
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Should work, but will likely need to fool PGOOD signal to make sure other PWMs/MB logic works fine.
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Old 01-21-2014, 03:27 PM
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Thanks
This week I will make an attempt to zombiefy the board and I will post the results.
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Old 01-23-2014, 10:31 AM
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It works!

Jest desoldered the chokes. No messing with board controller.
It is like this for testing. Will solder more cables.



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Old 01-23-2014, 11:21 AM
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Oh, nice project! Keep us up to date please.
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PI calculation is done!

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Old 01-23-2014, 12:52 PM
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really nice work!
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Old 01-23-2014, 03:11 PM
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Thanks

There is quite long road ahead of me - replacing capacitors, adding new ones and soldering more cables. But I hope it will be worth the trouble.

For sure I will post about progress in the project and hopefully some results

BTW Big THX to bartx for helping me out
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Old 01-23-2014, 07:13 PM
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Ok, some update
It took a lot of time and effort, but I managed to solder all wires
Moreover it still works

I also removed 16V capactiors, that are no longer in use, due to removal of coils.
Next move - adding new capacitors and replacing egsisting ones.



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Old 01-23-2014, 11:38 PM
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Good, keep it going..

Try keep wires shorter, this is not so good now on your pics.
Also i'd keep 16V caps as that voltage plane my go some other parts, like memory PWM input or something.
And I'd shhrrr-shrrrr much more on motherboard to have wide and solid connection for power planes.

And don't forget grounds! You need keep same or more wire amount for ground return. Current flows from power to ground, it must be adequate to have all that power return back to VRM card, or you will have big problems
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Old 01-24-2014, 04:41 AM
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I tried to make wires as short as possible, but it is not so simple. They are quite flexible although they are thick (11AWG), but once you solder them they become stiff :/ MB I/O panel doesn't make it easier.

Power planes... I tried to make them as big as I could. They couldn't be bigger without making short circuit - I was very limited here

There are four powering cables and four GND cables. There is possibility of adding one more GND and I will do it today.

Thanks
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