No Power RX470 8GB - IR3553M

[Acnologia]

Hello to all.

My personal card, has suddenly died, i was helping for 1 week to folding@home , when the COVID-19 occured. And suddenly it didn't get any power.
My PSU Titanium grade, and is connected to powerline with UPS.
So the :voltage: is everytime safe and good.

Now, i have tested via youtube,that saw some videos from RX470/480 dieing on spot ,that the chip IR3553M is making a connection to ground and dies and takes the Dual fuses,with it.

I have taken some photos and i am attaching them here to get help from you guys,if you can help me out.

Indicators.

Replaced the dual fuse , top right corner (2X 10 A)
Replaced the bottom IR3553M which had conntected to ground.

As i saw the 1,2 points in the IR3553M (that i have in the top photo) , 2 should not beep ,and number 1 should beep (solder point) .
All the IR3553M now, remain silent on leg 2 , and on leg 1 beep.

I don't see any other faults, but the card still remains cold as dead.

Any suggestions ?

Here are extra links for high resolution photo :
https://imgur.com/a/hAL65R7

Thank you.

[Acnologia]

Re: No Power RX470 8GB - IR3553M

My mistake.
I found the problem. Hahaha , silly of my self.

I compared the picture of my RX470 with another RX470 and i saw that i didn't put another Fuse 10A ,bottom left side of the "DVI" connector ,it has a 10A fuse that i had removed it ,and didn't remember it.

Now,it posts good

[Acnologia]

Re: No Power RX470 8GB - IR3553M

Okay , now new problem.

Yesterday the card, went by the diagnostics, even Heaven Unique for about 30 minutes,and then i played like 2 hours of Warzone, with max settings.
The card was normally hot,as usual , and the airflow of the system good as always.

It suddenly died again.

I tested today all the other 4x IR3553M all shorted. The bottom fuse as well , it beeps only when you take it out,when you place it on board it doesn't beep.

I changed and replaced the IR3553M with a new Fuse as well ,and the card still remains dead.

I see there is 2 x capacitors missing from the IR3553M in line, 2 x really small ones. Can you or someone figure out, why this is happening and how can i measure what capacitor should i use ?

The picture i attach shows the 2 capacitors,that are missing today.When yesterday they were on place.

[Acnologia]

Re: No Power RX470 8GB - IR3553M

I measured another capacitor from above,in the same place with target meter at 200nF, showed me 123nF , so the capacitor is 123nF ? Right ?

[ziko07]

Re: No Power RX470 8GB - IR3553M

You still have this card?


Tnx

[Acnologia]

Re: No Power RX470 8GB - IR3553M

You still have this card?


Tnx

Yes.

[ziko07]

Re: No Power RX470 8GB - IR3553M

Can you please check for me is those 4 pins connected to GND?
And did you solved your card?

Tnx

[Acnologia]

Re: No Power RX470 8GB - IR3553M

Can you please check for me is those 4 pins connected to GND?
And did you solved your card?

Tnx

No i cannot, i don't have it anymore.
Yes, i had it fixed with my changes.

[Bluedog69]

Re: No Power RX470 8GB - IR3553M

Hello,
I have almost the same problem as you,
Can someone give me an eBay link to the 5KW20 270 16V capacitor,
Thanks,
Did you fix your card ?

[Acnologia]

Re: No Power RX470 8GB - IR3553M

Hello,
I have almost the same problem as you,
Can someone give me an eBay link to the 5KW20 270 16V capacitor,
Thanks,
Did you fix your card ?

Why is the same question again ?
Why doesn't anyone read the thread?

[fab13]

Re: No Power RX470 8GB - IR3553M

Hello,
I have almost the same problem as you,
Can someone give me an eBay link to the 5KW20 270 16V capacitor,
Thanks,
Did you fix your card ?

Hello,
I have a RX480 8GB

I just read your messages and I have a problem also at the same level no voltage at +VDDC and mosfet IR3550 on +CIN and at 0mV in diode mode and almost 0Ohm

Any idea?

It would be with joy to help if needed too.