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Post by Macsbeach98 on Dec 8, 2017 6:08:07 GMT -5
20k ohms is the value used for the VDD mod on that board.
A general guide of reference for doing feedback trimmer mods is to measure the resistance and multiply it by 20 and go to the next size triimmer.
An example 700 ohm resistance at the feedback pin 700 x 20 = 14000 or 14k ohms. Trimmers in 15k ohms are generally hard to get so you would use a 20000 = 20k ohms trimmer.
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Post by Mr.Scott on Dec 8, 2017 16:29:13 GMT -5
Awesome link. I'm on it also. That's cheaper than I can get them in the states. Free international shipping too.
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Post by Aleslammer on Dec 8, 2017 19:58:03 GMT -5
They say multi turn how many cause they a lot cheaper than the assortment I picked up.
Picked up a NF7 plain should of asked the same question as Mr. Paco or waited for the answer as I have a NF7-S V2.0. Ordered it the 6th here today from Minnesota seller used DHL.
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Post by Macsbeach98 on Dec 8, 2017 20:07:00 GMT -5
Thats good Brad its the V2.0 thats important the S is for Sata which I dont use anyway I use a IDE to Sata adaptor in the IDE port
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Post by Bones on Dec 9, 2017 8:46:28 GMT -5
Yep - 2.0 is the version you want but even some 1.2's aren't that bad, have one here that does fairly well on it's own but as expected it too has been modded.
I have two of the 2.0's (S and non-S versions) and both are capable clockers, having a good chip for it is also important or it won't matter which board version you have.
Buck controller came in so I guess I'll get busy before the weekend is gone and see what I can come up with.
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Post by Mr.Scott on Dec 10, 2017 11:29:32 GMT -5
My board has CBB at 10c. Just like the Ultra B. Makes it a PITA to get started.
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Post by Macsbeach98 on Dec 10, 2017 15:42:48 GMT -5
Interesting does the alarm go off mine makes a very loud noise if I try to run it cold.
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Post by Mr.Scott on Dec 10, 2017 16:50:44 GMT -5
No. I get nothing except lights and fans. Just like no CPU installed or a corrupted bios. Soon as I warm it up a little, it'll post without issue. My usual method of warmup is to just turn the pump off on the chiller and try to boot. As soon as it posts I slam the pump back on. Yes, I know that's a dangerous game when you're booting a socket A at 2+ volts.
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Post by Macsbeach98 on Dec 10, 2017 19:04:30 GMT -5
When I try to boot them cold I get the alarm go off Eeeaww Eeeaww Eeeaww. After I cut power to the supply it will sometimes go through other times its back to the alarm its a hit and miss. Try to boot not too cold and just pour nitrogen in as it boots. But I cant use that here just icewater.
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