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Ok, pin 5 is the actual output for the RT ICs. Then f741 the connectivity test between those points and pins 1, 7, 8, and Those are the outputs. Well, nothing else to do but give her a try then. I would start with a 5kk VR just to be safe.

We need to make sure its Vddr and not Vddq. That sounds a bit low for Vddr, thats probably vddq. I wanna try and find some volt mods for it.

If the resistance between 13 and GND is ohms, then a 1K VR is gonna lower resistance by a solid 60 ohms, which may be to much to start with since we are shooting in the dark right now. There is nothing else really. The LM chip is prob controlling either Vgpu or Vddr. I’m almost sure that the 2.


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Well I looked over the datasheet and which pin do you think is likely to be it? Sounds like the vdd voltage right there. Resistance between pin 1 and a ground is The back of the card is almost blank except for one mosfet which reads “APME” There are also small 3 legged ic things that read “PH0o BCP68” On the front of the card there are more things that look like regs.

If eatasheet dont get an increase after turns, then I would stop and we need to take another look at it. Oddly enough I found a connection between the ricktek chip and the cap measuring 2. Odd pcb layout vmods. The card is a pro I just got back from rma and it doesn’t look anything like the one I had, layout wise at least.

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Pin 13 is the inverting input for output pin Give me a resistance reading for pin 4 and lets see if we can change the Vddr by modding this RT IC. Anyone make sense of that one? I found connectivity between pins 13 and a cap on the back of the card that reads 2.


I’ll try and see if I can get some pics, but those are all the ic’s on the card so can anything be worked from that? Do a resistance between 13 and GND and post what you find. If possible, please check the voltage on 14 and post that. If Output Pin 1 is supplying Vddr, then we try modding to pin 2.

BTW HF, this is a not a ti Just odd the 13 is tied directly to that cap. I feel for ya tho: My pop has the camera so I can’t take any at least not tonight.

I dont recall what the baseline Vddr is for the cards. Keep a good eye on the voltage as you adjust the VR.

IRF7413 Datasheet PDF

Once we figure out which output is supplying the Vddr and Vgpu, we can try modding the inverting inpout pin each output pin. Those are all the ICs on the board. Got some pics now.