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