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MSI Radeon 5700 MECH OC board component question

SqueegyGuy

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Hi crew,

I may have had some water dripped onto my radeon 5700 from the waterblock and now it doesn't show anything on the display. I had someone do a quick look with a microscope and found a cracked component. There could be more issues, but I'd like to start with ordering up some replacement components, but I don't know what the specs are of the component.

One of the little black components near the NCP81022 chip split apart, and I was hoping someone knew the specs on these. If you happen to know what some of the other ones are, feel free to inform everyone while you are at it. I'll put in an order with digikey once I have an idea of what it should be.

The layout looked similar to https://www.techpowerup.com/review/powercolor-radeon-rx-5700-red-dragon/images/front.jpg, whether or not that helps, I don't know.

I'm hoping it's salvageable as the fans still spin up and the display initializes, it just doesn't show anything.

Thanks,
Jason

255845399_957711361497826_1522231558325184414_n.jpg
 
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most likely a resistor, can you check its current value with multimeter? and also its resistance to ground, that would be somewhat helpful. Also, how much water got onto the pcb? like a couple of drops, or it was more than that? did you localize the exact spot where it leaked?
 

eidairaman1

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Those might be capacitors-

Use a meter than can read microfarads, read the components next to it
 

SqueegyGuy

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The water pretty much stayed to the top portion of the card and was maybe 1-2 drips, it also dripped into the PSU out another hose and caused some explosions (probably capacitors shorting). I'm currently using the PSU again (after drying it out and using a psu tester on it) with another videocard as it seems to be working as normal.

The dumb part is, I had actually put tap water in the system a few days prior as the hose in another part had popped off and drained the distilled, and didn't have another bottle on me and just wanted to get going again. Needless to say, I've learned a bit about doing water cooling, do it right, or suffer the consequences ;p

On the other note, I had called a local electronics repair shop, he said it wasn't as easy as hitting parts with a multi-meter and getting a reading, but I'll see if I can find one or someone that has one with microfarads to see if I can determine resistor vs capacitor.

Thanks for the info.
 

eidairaman1

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You touch the ends with meter leads
 

SqueegyGuy

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I found a high rez picture of another board that had the PCB components printed on it at guru3d. Now knowing what the components should be (looks like a resistor), and having watched a youtube video on how to diagnose board components (mostly capacitors), I'll be watching a few more videos on how to diagnose components, then I'll give checking the rest of the components in the area for problems a shot.

If it all seems ok in the area, I can probably have someone take a resister off the board next to it to find the rating and replace the broken one and cross my fingers and hope it works.

I'll you guys know how it goes when I get around to checking and replacing things.


1637886321489.png
 

Tigger

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Its R710 your red arrow is pointing at. If it was mine i would just find a old bit of crap and take a resistor off that to replace it, worth it just to test it.
 

SqueegyGuy

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I ended up just asking Powercolor support, and the fellow checked with the head office and reported back that R710 is a 100K OHM SMD 0402 5% 1/16W component. I waited on his reply to update the info here.

In the weeks since first posting I had watched a bunch of really good youtube videos from Eli Tech, Zoras Tech and Adamant IT about troubleshooting. Taking that knowledge I tested the rails and various components for shorts and resistance and it appears like it "should" work once the broken bit is repaired. I'd suggest if anybody else needs to figure things out, the youtube creators were good for the how-to part to diagnose, and don't be afraid to ask support a question if necessary if you can list specific parts.

I ordered up some stuff from digikey, just waiting on it to show up.

Cheers all, and wish me luck.
 
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