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Search: Posts Made By: momaka
Forum: Troubleshooting Power Supplies and Power Supply Design 05-30-2020, 12:02 PM
Replies: 1,607
Views: 352,767
Posted By momaka
Re: the gutless, bloated, and fried power supply hall of shame

:lol: :lol: :lol:

Well, compared to the other Powertech PSUs, it indeed has really good build quality. :D (Not that they were setting the bar too high to begin with. :D )


*Sigh*
If only they...
Forum: Abit - Asus - Aopen 05-30-2020, 11:49 AM
Replies: 33
Views: 566
Posted By momaka
Re: Killed my Asus A7V266-E? Need advice

Ha, I've had that happen before too on an old Pentium II motherboard, where the CMOS battery was just marginal (about 2.4V). Except in my case, the CMOS language changed itself to a random one. But...
Forum: Abit - Asus - Aopen 05-28-2020, 10:08 PM
Replies: 33
Views: 566
Posted By momaka
Re: Killed my Asus A7V266-E? Need advice

I'm starting to see a pattern here:
The motherboard boots OK when warm, but has trouble when cold. That's a very common symptom with bad caps. Of course, the issue could also be a bad solder joint...
Forum: General Computer & Tech Discussion 05-28-2020, 09:50 PM
Replies: 48
Views: 2,005
Posted By momaka
Re: A Colossal HDD Failure

Eh, don't get me wrong - I still don't mind Seagate HDDs. But all of their newer HDDs (as in, made in the past 10 years), I don't trust. Many seem to develop bad sectors too quickly or just can't...
Forum: Abit - Asus - Aopen 05-28-2020, 10:02 AM
Replies: 33
Views: 566
Posted By momaka
Re: Killed my Asus A7V266-E? Need advice

Awesome! Great to hear the board is working again. :)

So it seems the board doesn't seem to read the CPU correctly when set to jumper-free mode and possibly sets the wrong VID/FSB/multiplier,...
Forum: General Computer & Tech Discussion 05-27-2020, 09:08 PM
Replies: 48
Views: 2,005
Posted By momaka
Re: A Colossal HDD Failure

I'm back with another colossal HDD failure. :D
Same brand and model (Seagate 7200.11, model ST31500341AS.)
https://www.badcaps.net/forum/attachment.php?attachmentid=213263&stc=1&d=1590635256
...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-27-2020, 08:27 PM
Replies: 210
Views: 24,435
Posted By momaka
Re: FSP400-60GLN worth fixing?

Always trust your multimeter and never the motherboard voltage sensors (unless your multimeter has low batteries - only then you will likely see higher voltage than what they actually are.) To date,...
Forum: Abit - Asus - Aopen 05-27-2020, 08:20 PM
Replies: 28
Views: 987
Posted By momaka
Re: Dead Asus P5P800-VM

I think Xbox 360 boards use similar MOSFETs and drivers. That's pretty much all I've ever used for replacing MOSFETs, as I used to work in a console repair shop and accrued many dead Xbox 360 PCBs...
Forum: Abit - Asus - Aopen 05-27-2020, 07:51 PM
Replies: 33
Views: 566
Posted By momaka
Re: Killed my Asus A7V266-E? Need advice

Fear not!
The caps around the CPU are usually the hardest to replace, because they sit on the thickest copper planes. The fact that you got those recapped means you're probably done with the hardest...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-27-2020, 07:37 PM
Replies: 1,607
Views: 352,767
Posted By momaka
Re: the gutless, bloated, and fried power supply hall of shame

That's funny.
With other gutless PSU's I've seen (particularly ones that were based on a "high end model" PCB and then made cheaper), they would have TO-247 holes, but only TO-220 parts installed,...
Forum: General Computer & Tech Discussion 05-27-2020, 07:17 PM
Replies: 59
Views: 1,666
Posted By momaka
Re: New SSD hard drive in laptop computer what a difference in boot time

Yup, you're right. I just looked at some of the benchmark tests on my test PC, and indeed most are 0.1 ms or thereabouts. Even a very old 6 GB 2.5" laptop IDE/PATA SSD of mine had sub-1 ms seek. :D
...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-27-2020, 06:58 PM
Replies: 24
Views: 1,080
Posted By momaka
Re: Task TK-940TX-DF Blowing fuse

So something is drawing power across the primary cap. Still have to determine if it's the 5VSB or a component from the main PS... So let's dig a little deeper....


No, don't replace it. Just...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 05-24-2020, 10:23 PM
Replies: 5
Views: 139
Posted By momaka
Re: Soldering with a tremor.

My father claims the resolution to his is to just drink more beer and liquor :cheers: :D

Don't ask for the scientific evidence on that, though. :D

On a more serious note... not sure what to...
Forum: Troubleshooting Game Consoles & Other Weird Devices 05-24-2020, 10:15 PM
Replies: 7
Views: 256
Posted By momaka
Re: HDD Spins up and down again at power on

Sorry! It's dead, Jim.

I got two of these 2TB ST2000DM001 from a box at work that was going to get scrapped. Initially, I was very excited, because I have found some good working HDDs in the past...
Forum: General Capacitor Questions & Issues 05-24-2020, 06:50 PM
Replies: 10
Views: 287
Posted By momaka
Re: Old stock capacitors

At 7 years old :rolleyes: ... and Teapo SC, at that :hiding: ...

Yeah, it may NOT be a good idea to use them in anything you care about.

You may try reforming them slowly to their rated voltage...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-24-2020, 06:24 PM
Replies: 61
Views: 7,110
Posted By momaka
Re: Altec MX6021

Both of these caps filter the primary side auxiliary rail for the PWM IC. One of them is the "start-up" cap (most likely C11). If one or both of these go bad, the PSU may not be able to start up and...
Forum: Abit - Asus - Aopen 05-22-2020, 01:51 PM
Replies: 33
Views: 566
Posted By momaka
Re: Killed my Asus A7V266-E? Need advice

It doesn't look like the smoke came from the coil. Perhaps it was from the CPU and air movement (from a fan or whatever else) blew it away, making it look like it came from the coil. If it was the...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-22-2020, 10:52 AM
Replies: 38
Views: 2,265
Posted By momaka
Re: A "nice" YoungYear unit?

Thanks for sharing pictures of your work. Looks really good and great to hear it's still running well. :)

I guess this shows that even an older half-bridge PSU can be useful once recapped with...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-22-2020, 10:42 AM
Replies: 3,083
Views: 807,714
Posted By momaka
Re: Power supply build quality pictorial. part 2

Nice! Those TVs are pretty nice, actually.
If it's not working and you're looking for a specific part for the power supply, let me know. I have saved several PCBs from Sony TVs from that era (none...
Forum: General Computer & Tech Discussion 05-19-2020, 04:55 PM
Replies: 4,462
Views: 686,206
Posted By momaka
Re: best cheap/free scores 1.1

I got two spools of almost 500 ft of 12 AWG, 300V, stranded wire from work. Don't ask why - our workplace just likes being wasteful sometimes and throws away perfectly usable stuff in the bin. In...
Forum: Abit - Asus - Aopen 05-18-2020, 05:31 PM
Replies: 28
Views: 987
Posted By momaka
Re: Dead Asus P5P800-VM

That's still very hot.

I suggest replacing all three MOSFET drivers at once and all of the MOSFETs too. While at it, also check all of the MOSFET Gate resistors and caps, if any.

I have an...
Forum: Abit - Asus - Aopen 05-18-2020, 05:21 PM
Replies: 5
Views: 184
Posted By momaka
Re: ASUS M2N68-AM Plus - Not booting

That's what I was thinking as well.

But maybe try system with only one RAM stick and one slot at a time, just to rule out RAM socket / CPU socket issues.

I have two of these M2N68-something...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-18-2020, 11:34 AM
Replies: 1,607
Views: 352,767
Posted By momaka
Re: the gutless, bloated, and fried power supply hall of shame

With one output cap per rail and that small output inductor, it's not surprising. Junk!

And it's a shame, because the primary side probably could do 200-250 Watts. With good parts on the secondary...
Forum: General Computer & Tech Discussion 05-16-2020, 06:37 PM
Replies: 59
Views: 1,666
Posted By momaka
Re: New SSD hard drive in laptop computer what a difference in boot time

I guess I'm joining in a bit late to put down my 2 cents, but here it goes.

Last year when I started at my new job, they didn't have enough new laptops to give out to all of the techs. Since I...
Forum: General Capacitor Questions & Issues 05-16-2020, 02:39 PM
Replies: 6
Views: 279
Posted By momaka
Re: ATX PSU recap and upgrade

Assuming it's a properly designed and built PSU, this is probably true.

However, without seeing the PSU, I can't say if the O/P should use the same/similar capacity caps or not.

Remember,...
Showing results 1 to 25 of 500

 
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