Question

Which component is at fault here?

Dec 23, 2019 9:55PM PST

During a heavy rainy day, I tried to switch ON the PC by pressing the power button on the CASE, There was NO RESPONSE, I tried pressing it a few times, still NO RESPONSE, I removed the case and removed all the components cleaned the DUST inside the case and again assembled everything back together, and tried switching on the PC, by pressing the power button on the case, still NO RESPONSE.
I tried to JUMPSTART, still NO RESPONSE.

I took it to the service centre, in service centre it turned ON,
When I brought it back home again the same issue appeared.

And suddenly when I tried to turn ON the PC on the late-night it started!!

The PC worked fine for the next 2-3 weeks, it started whenever I wanted, had no issues with the PC.

Again there was a heavy rainy day, during when I tried to switch on the PC by pressing the Power button on the PC CASE. I got NO RESPONSE.

Since this problem first appeared on a rainy day, it appeared again on a rainy day I assumed, the problem has something to do with the TEMPERATURE OR MOISTURE or SOMETHING RELATED TO DAMPNESS.

I did not use the PC for the next few consecutive rainy days, Then there was a nice sunny day, I tried to switch on the PC by pressing the POWER BUTTON on the pc case, NO RESPONSE!. I removed the two side covers of the PC case, I took it outside and kept in the sunshine, to let the sunshine fall all over the PC, so that it may get heated.

After an hour, I brought the PC into the home and tried starting by switching on, by pressing the POWER BUTTON on the PC CASE,
TO MY SURPRISE, IT STARTED.

So till today every time if I want to start my PC after turning it OFF after a long 6+ hours off the gap, I just can't turn on by pressing the POWER BUTTON on the PC CASE, I have to take the PC outside to let the sunshine to fall all over the PC so that it gets heated up for an hour, then I can bring in the PC and switch it ON.

Some people I know suggested it might be a cold soldering issue, which is a case when the soldering on the motherboard might break off, but when it is heated, the alloy would expand and would make contact, leading it to turn ON.

I also tested the PSU with paper clip testing, the fans were spinning, which indicated the PSU is fine.

I just can't claim warranty without knowing exactly which component is at fault,
is it PSU OR MOTHERBOARD OR SOME OTHER parts??

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Comments
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Answer
Sadly
Dec 23, 2019 10:23PM PST

The only way to know what part it is, is to swap parts.

I do suspect incorrect assembly such as an extra motherboard mounting post or maybe a nearly overloaded PSU but there are NO PART DETAILS HERE. You may be stuck with a repair shop.

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My configuration
Dec 23, 2019 10:27PM PST

Thanks for replying.

There is no way I could be overloading my PSU, as my PSU is 550W which is in fact underutilized by my current configuration.
Also, I tested the PSU with a paper clip method thrice, the fans in the PSU were spinning,
CPU: AMD RYZEN 3 2200G
GPU: GTX 1050Ti
Motherboard: Asus EX A320 GAMING
RAM: GSKILL 8GB RIPJAWS ( 1 x 8GB)
PSU: Corsair VS 550W

The main point here is every time I desire to start the PC after a long break of 5+hours I just can't start it normally by pressing the POWER BUTTON on the PC CASE, as I would get NO RESPONSE, and the PC shows no response.
I have to take it outside with the side covers remove, to keep it in the sunshine so that It may get heated up for an hour or so, after this I bring it into the home and I can start without any problem.

This means during rainy days, non-sunny days, I CAN'T use my PC, which is really a terrible thing, that I am bounded by such conditions to use my PC.
Please share all your valuable thoughts, experience, expertise, opinions, HELP ME OUT!

Post was last edited on December 23, 2019 10:49 PM PST

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Anytime folk tell me it can't be this or that.
Dec 24, 2019 12:20AM PST

It raises the chance it is that.

https://www.google.com/search?q=Asus+EX+A320+GAMING+won%27t+turn+on finds priors so you can look through those but as I wrote above a shop takes a failing PC in and makes their best guess. To me this could be yet another out of date BIOS, bad motherboard or bad assembly. The symptoms don't tell us which it is.

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I update the BIOS whenever a new version is released.
Dec 24, 2019 2:29AM PST

I update the BIOS regularly whenever a new version is released on the official site of Motherboard.
So the current bios version which I installed was the latest and last version released on the official site of Motherboard.

And I forgot to mention this, Whenever I start the PC after keeping it in the sunshine for an hour, When I log into Windows I find the time is changed.

Any thoughts or opinions about how the PC starts after it is heated up in the sunshine for an hour.

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Not advised.
Dec 24, 2019 9:00AM PST

The current advice about the BIOS is to:
1. Update when new so you get support for what you have (RAM, CPU, etc.)
2. Update when they issue a security update and you agree.
3. DO NOT UPDATE WHEN IT'S WORKING.

The time change may point us to a low CMOS battery. I can't be sure but given these run about 25 cents we don't measure it any longer but slip in a new one.

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I did a different expirement
Dec 25, 2019 12:26AM PST

Usually whenever I want to start my PC, I used to take the entire PC cabinet with everything intact(just the side covers of the PC cabinets would be removed), outside to let the sunshine fall all over the PC, so that it might get heated up for an hour and I can use my PC.

But today, I did something different to specifically find out where the REAL problem is, is it the motherboard or the PSU.

So what I did was, I completely removed the PSU from the PC cabinet disconnected the PSU from the Motherboard.

I just kept the PSU outside in the sunshine, for an hour, Then brought into home and connected it to the Motherboard, pressed the POWER BUTTON on the PC CASE, I got no response, I switched OFF the main supply, and switched it ON, Again I tried to switch on the PC, by pressing the POWER BUTTON on the PC CASE. TO MY SURPRISE, IT STARTED.

Does this mean that Motherboard is perfectly fine, but the real faulty one is the PSU???
Anyhow, tomorrow or day after tomorrow, I am not going to keep the PSU in the sunshine rather the PC CABINET with motherboard mounted into it in the sunshine.
To find out exactly what is the faulty one here.

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Try another PSU.
Dec 25, 2019 9:52AM PST

That's the only way to know.

My background as an electronics designer could have me explain that setting the PSU out like that can change the rise time of the PSU rails (+12V, etc) and the system likes that so the PSU might be OK and it's still the motherboard or even the CMOS battery.

Given the low cost of a CMOS battery why not change that now?

-> One of the best advice about repair of anything I received decades ago was "If you can't figure out which part is bad, replace the cheapest part first."

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I tried changing CMOS
Dec 25, 2019 11:51AM PST

The very first timr this whole problem occured, I tried replacing the CMOS with a new one, still it didn't start.


Tommorow I am going to place the PC without PSU attached to it in the open, if it is motherboard is the faulty one IT MUST START after I bring into the home.

If didn't start then the PSU is the real faulty one.

All I am trying to do is to find which is the actual faulty component, once I find it I can contact the manufacturer for service or replacement.

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I tried changing CMOS
Dec 25, 2019 11:51AM PST

The very first timr this whole problem occured, I tried replacing the CMOS with a new one, still it didn't start.


Tommorow I am going to place the PC without PSU attached to it in the open, if it is motherboard is the faulty one IT MUST START after I bring into the home.

If didn't start then the PSU is the real faulty one.

All I am trying to do is to find which is the actual faulty component, once I find it I can contact the manufacturer for service or replacement.

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You're making a big assumption.
Dec 25, 2019 12:07PM PST

Which is "there is only one bad part."

While the odds are with you, I've seen PCs with a bad PSU and motherboard. It does happen. Good to know the CMOS battery is new as that almost rules out that area.

-> Let me share I'm not a fan of the AMD 3xx series of motherboards. If I see one which I've seen too many I suggest the owner replace it with the newer 450 models such as we see at PCMR. The PCMR gets updated so people in years to come may reply that there is no 450 there.

Link follows: https://www.reddit.com/r/PCMasterRace/wiki/builds

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I got a brand new PSU
Jan 3, 2020 11:15PM PST
Okay, I purchased a brand new PSU Antec Atom V550, I connected the NEW Antec PSU to the motherboard, pressed the power button on the PC cabinet, as usual, NO RESPONSE,

I took the PC cabinet(with just GPU, motherboard, RAM, CPU ) and kept it in the sunshine for an hour after an hour brought it back into the home and connected the new PSU to the motherboard, pressed the power button it TURNED ON.

I am totally confused still, I am not sure what component is exactly faulty here, as in this post you can see me describe that I kept the PSU in the sunlight for an hour instead of the PC, which worked for a week, then one day I kept PSU out in the sunshine for more than 2 hours the PC did not start but on the very same day, I kept PC cabinet (with just GPU, motherboard, RAM, CPU ) it worked.

Now I can assume that motherboard is the real problem here, as every time I turn it on after exposing it to sunshine I find date and time are lagging.
also from the last 2 days, the RGB component in motherboard stopped glowing.
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Me repeating.
Jan 4, 2020 8:42AM PST

Big nod to the motherboards over at PCMR.

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SO FAR USING THE PC AFTER EXPOSING TO SUNSHINE FOR 1 HOUR
Jan 6, 2020 8:44PM PST

Motherboard has its warranty period, so If I submit it to the ASUS authorized service center, It may be repaired.

I hope that the problem in the motherboard is not so serious, rather a small fixable problem such as Cold Soldering, because a faulty motherboard should not even boot in the first place, right? Please correct me If I am wrong?


Whereas I am able to use it for 5-7 hours without any problem after exposing it to sunshine for an hour?

I even got a new PSU still I just can't turn the PC on whenever I want after a long 6-7 hours break, rather I have to take it outside to expose it in the sunshine, to start the whole thing.

And most of all EVERY SINGLE TIME I SWITCH ON THE PC AFTER EXPOSING IT TO THE SUNSHINE, I FOUND THAT THE TIME AND DATE IN BOTH BIOS AND OS IS CHANGED, when I say it is changed it lags behind the actual time.

When I try to start the PC after a long 6-7 hours break, even the fan in PSU (both new and old ones )won't spin.

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I wish it was binary.
Jan 6, 2020 8:53PM PST

Sorry but gear can have issues that do exactly what you wrote above. In the shop we have to swap out the most likely because the makers do not issue test gear or procedures to tell what part it is. This system of swap to test has been with us since before 1980.

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Similar issue like mine, in the video
Jan 6, 2020 9:02PM PST

In this video you see the person faces similar issue like me, even for him the motherboard needs to be heated up to boot, the only difference is I am using Sunshine to heat up the board, this guy uses Hairdryer.


The person who uploaded this video, even got a new Motherboard, but later regretted getting a new one, since he claims that he found the FIX in the old one, he claims the problem was with the RESET CABLE which comes from the front panel of the PSU.

Please check both videos, and explain if the reset cable has anything to do with the same problem, which I too face.
Once I removed all the Motherboard and other components out of the cabinets and connected the PSU to the motherboard in OPEN, I tried to jump-start, but it was not successful.


Same problem


Fix

https://www.youtube.com/watch?v=xnMnNEl9lOI

Post was last edited on January 6, 2020 10:06 PM PST

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And they ended with ?
Jan 6, 2020 10:03PM PST

Sending back the motherboard.

And folk ask me why I visit the shipping store so often.

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FIX THAT DON'T MAKE SENSE TO ME
Jan 6, 2020 10:08PM PST

The person who uploaded this video, even got a new Motherboard, but later regretted getting a new one, since he claims that he found the FIX in the old one, he claims the problem was with the RESET CABLE which comes from the front panel of the pc cabinet.
Please check both videos, and explain if the reset cable has anything to do with the same problem, which I too face.
Once I removed all the Motherboard and other components out of the cabinets and connected the PSU to the motherboard in OPEN, I tried to jump-start, but it was not successful.

Post was last edited on January 6, 2020 10:54 PM PST

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And it proves
Jan 7, 2020 9:02AM PST

That this make and model board has issues. Sometimes folk want to think it's something else but at the shop we have no time for such foolery. We change it out for another make and move on.

As to why boards do that, I reserve that discussion for the electronics classroom.

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