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Did you solder or use a smd grabber ? Now the $102.00 question , (a.)did you place the resistance between the two legs of the modded chip OR (b.)did you apply one side of the resistance to the modded chip and ground it elsewhere (so the current has to travel around to get back to the modded chip) ? If (a.) I will worry a little. (b.) I will breathe easier. bob |
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timbob , I soldered the joint .it had been fine for two weeks,running 1.82vdd.soldered outer two legs. it could be totally unrelated but if it aint ,then I want to know if I should have perhaps passive cooled both modded chip and one next to it.
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Re: chip next to vdd-modded chip (fried!!!!)? Quote:
The voltage regulator chip doesn't directly control the voltage output. Instead it does all the processing, and controls the MOSFETs. The MOSFETs are the part that sit inline with the power, in just the same way as the CPU voltage regulator works. Anyone else able to confirm this suspicion? Áedán
__________________ Any views, thoughts and opinions are entirely my own. They don't necessarily represent those of my employer (BlackBerry). |
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Re: chip next to vdd-modded chip (fried!!!!)? Quote:
__________________ If you need EPoX BIOS eeproms in the UK, goto http://www.epox.org..................... |
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Aeden, chip in question has 8 legs same as vmod chip.and i,ve just checked the one on my 8rda+ and that hasnt been modded (yet) and it is hot already so I will put on tall h/s on that chip after mod( be a little awkward before) and hope for the best.
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Quote:
Áedán
__________________ Any views, thoughts and opinions are entirely my own. They don't necessarily represent those of my employer (BlackBerry). |
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Think i know what chip doctoromeo is talking about. Its one just to the left from modded chip (looking into tower case). It looks exactly like the chip what you mod for VDD. Am i right doctoromeo ? My is hot too (i didn't mod VDD) think its the hotest one on my motherboard, i hope it will not fry like yours doctoromeo ![]() ![]()
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I put a small heatsink on mine..... you will have to be careful as it is right inline with the AGP port, and if you have a long card ( AKA Geforce) it will have to be pretty short to allow clearance. Mine was rather warm b4 the vdd mod, and I can feel that the HS is warm to the touch as we speak.... must be careful putting AS epoxy on it, as it is a small area to work with.
__________________ All MODS are done AT YOUR OWN RISK.........plan accordingly.. ![]() Fat, Drunk and Stupid is no way to go through life......... I have a pool and a pond........ pond would be good for you though. |
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Aeden it is some kind of controller... It Looks like the # on it is 228M - not 100% sure thats what it is, but it looks like thats the # And I believe it is made by International Rectifier by the symbol IOR ( that is not really an "O" it is a symbol of a diode in a colored circle - but it matches the look on their webpage). I went to their page, but couldn't match it up against anything they had.... the chip you actually mod has the same symbol, and it IS listed on their page ( 3037A)
__________________ All MODS are done AT YOUR OWN RISK.........plan accordingly.. ![]() Fat, Drunk and Stupid is no way to go through life......... I have a pool and a pond........ pond would be good for you though. |
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TBH, I'd expect it to be in the form of something like IRF7301. You see, the controller used for the Vdimm voltage (IRDC3037A) has no power handling capability itself. If you ask the IRDC3037A to provide more than a few tens of mA, it'd go pop. Hence, there needs to be a pair of MOSFETs somewhere close. IR do a whole series of dual MOSFETs in nice neat little packages. They generally start IRF7xxx. Áedán
__________________ Any views, thoughts and opinions are entirely my own. They don't necessarily represent those of my employer (BlackBerry). |
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Is it the one below the modded chip in this picture ? http://members.cox.net/8rda/images/vddmod2.jpg bob |
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Quote:
just vdd modded 8rda+ @ 1.78v
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Quote:
__________________ If you need EPoX BIOS eeproms in the UK, goto http://www.epox.org..................... |
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Quote:
Greetz Jeff
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I don't know if anyone has check the temp of the chip next to the one that you do the vdd mod to but mine with 1.58vdd get 67c with no air moving in that area. With 60mm fan blowing in area 44c so it might be wise to cool this area good if you are doing the vdd mod. This little chip gets quite warm.
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