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IRF7413 Datasheet PDF
If possible, please check the voltage on 14 and post that. I dont recall what the baseline Vddr is for the cards. Well I looked over the datasheet and which pin do you think is likely to be it? I wanna try and find some volt mods for it.
There is nothing else really. I would start with a 5kk VR just to be safe. Keep a good eye on the voltage as you adjust the VR. Resistance between pin 1 and a ground is BTW HF, this is a not a ti If you dont get an increase after turns, then I would stop and we need to take another look at it.
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?
F – IR – FETs – Single – Kynix Semiconductor
Then do the connectivity test between those points and pins 1, 7, 8, and Got some pics now. 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.
The LM chip is prob controlling either Vgpu or Vddr.
Just odd the 13 is tied directly to that cap. Odd pcb layout vmods. Once we f413 out which output is supplying the Vddr and Vgpu, we can try modding the inverting inpout pin each output pin. Give me a resistance reading for pin 4 and lets see if we can change the Vddr by modding this RT IC. If Output Pin 1 is supplying Vddr, then we try modding to pin 2.
Oddly enough I found f743 connection between the ricktek chip and the cap measuring 2. Anyone make sense of that one?
F Datasheet catalog
Do a resistance between 13 and GND and post what you find. Sounds like the vdd voltage right there.
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. I found connectivity between pins 13 and a cap on the back of the card that reads 2.
I feel for ya tho: We need to make sure its Vddr and not Vddq. That sounds a bit low for Vddr, thats probably vddq. My pop has the camera so I can’t take any at least not tonight.
Those are all the ICs on the board. Ok, pin 5 is the actual output for the RT ICs. I’m almost sure that the 2. Pin 13 is the inverting input for output pin 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.
Those are the outputs. Well, nothing else to do but give her a try then.