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Search: Posts Made By: momaka
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 06:49 PM
Replies: 2
Views: 160
Posted By momaka
Re: Daewoo microwave oven repair

Nice work getting it fixed! :)

I also like that this is the older type microwave oven with line-connected transformer and cap instead of the newer "inverter" technology ones that are constantly...
Forum: General Computer & Tech Discussion Yesterday, 12:32 AM
Replies: 79
Views: 11,701
Posted By momaka
Re: Some True BCN History - Homecoming of a long lost friend!

Oh, nice!
More than good enough for modern use.


LOL! :lolsign:
Fool me once, shame on you!
Fool me twice, shame on me! :D

(And it probably won't be long before there's a 3rd time, given my...
Forum: General Computer & Tech Discussion 01-24-2021, 10:06 PM
Replies: 55
Views: 7,618
Posted By momaka
Re: The longest you've ever used a single system?

Yeah, same - no internet until all patches (for SP2) or SP3 is installed and junk services turned off.


I did that last year, but I still use my XP SP2 CD more for some reason. :D
And on that...
Forum: General Computer & Tech Discussion 01-24-2021, 09:59 PM
Replies: 79
Views: 11,701
Posted By momaka
Re: Some True BCN History - Homecoming of a long lost friend!

Looks like 2017 was the last time it was off... so about 3.5-4 years of 24/7, give or take. Yup, sounds about the right time to do a cleaning. I power-cycle my systems quite often (usually don't...
Forum: Troubleshooting Power Supplies and Power Supply Design 01-24-2021, 06:20 PM
Replies: 20
Views: 865
Posted By momaka
Re: Xigmatek 500W ATX PSU went POP and stopped working

I have not ordered anything from AliExp, but I've heard a lot of bad stories about orders - at least here in the US. The main problem seems to be buyer protection, should you get a non-working item...
Forum: General Computer & Tech Discussion 01-24-2021, 06:11 PM
Replies: 55
Views: 7,618
Posted By momaka
Re: The longest you've ever used a single system?

Well, not quite.
SP1 and base version SP2 have a vulnerability that will still get you the DownAdUp worm infection even today, usually within hours of connecting your PC online - even with firewall....
Forum: General Capacitor Questions & Issues 01-24-2021, 05:51 PM
Replies: 191
Views: 257,064
Posted By momaka
Re: The GOOD Capacitors Thread!!

Not that particular version/brand.

But I have experience with Chang/Chong (however they're spelled), ChengX, and various copy cats of these, and none of them are good. Heck, not even mediocre....
Forum: Troubleshooting Game Consoles & Other Weird Devices 01-23-2021, 07:04 PM
Replies: 181
Views: 35,285
Posted By momaka
Re: Original Xbox Replacement Caps

Might be the snubber circuit for the standby PS or perhaps the primary-side auxiliary rail rectifier.

I know on some older Delta PC ATX PSU designs, the primary-side auxiliary rail rectifier diode...
Forum: Troubleshooting Power Supplies and Power Supply Design 01-23-2021, 06:48 PM
Replies: 23
Views: 1,633
Posted By momaka
Re: Toshiba laptop charger power supply problems

I agree with Sam, very nice write-up dicky96!

It probably captures over 90% of the failure scenarios in PSUs with current-mode PWM controllers.

In regards to injecting voltage on the Vcc pin of...
Forum: General Computer & Tech Discussion 01-23-2021, 06:26 PM
Replies: 4,815
Views: 786,805
Posted By momaka
Re: best cheap/free scores 1.1

I almost got a really good deal on a bunch of video cards this week (keyword being almost :D ).

Every once in a while, I check various Craigslist sections just for fun (usually once or twice a...
Forum: Troubleshooting Computer Displays 01-22-2021, 01:53 AM
Replies: 77
Views: 3,647
Posted By momaka
Re: Samsung 2693HM - Doesn't turn on (no standby)

If your SMD component (ceramic cap, in this case) gets stuck to the tweezers, then it's not getting soldered to the board.

Clearing the solder on one side with wick can help, but is not necessary....
Forum: Troubleshooting Computer Displays 01-22-2021, 12:21 AM
Replies: 77
Views: 3,647
Posted By momaka
Re: Samsung 2693HM - Doesn't turn on (no standby)

Interesting.

Yeah, looks like the firmware on the monitor programs how PWM0, PWM1, and PWM3 signals from IC300 behave.

If you open up the SM and go to page 81 (last page), take a look in the...
Forum: General Computer & Tech Discussion 01-21-2021, 10:24 PM
Replies: 89
Views: 3,245
Posted By momaka
Re: The 2021 Operating System Thread

Well no, but I think you know what I mean.

7 built up on a lot of features that XP had, but it also ended up dropping a number of them - and this is not just something related to searching. I'm...
Forum: General Computer & Tech Discussion 01-21-2021, 05:00 PM
Replies: 89
Views: 3,245
Posted By momaka
Re: The 2021 Operating System Thread

Well, yeah, that's because they bastardized that feature in Windows Vista/7. Search in XP was pretty decent... and if not content with that, there were a few light-weight add-ons that improved it in...
Forum: Troubleshooting Power Supplies and Power Supply Design 01-21-2021, 01:46 AM
Replies: 18
Views: 484
Posted By momaka
Re: Mini Lenovo PC Dead Power supply (ACbell PCH018)

^ Oh.... right you did.
For some reason, I read it that you just took 3.3V from the SATA power connector to drive that transistor circuit.
Yeah, NVM then.
Simplicity Level 300 achieved! :D
Forum: Troubleshooting Power Supplies and Power Supply Design 01-21-2021, 12:02 AM
Replies: 18
Views: 484
Posted By momaka
Re: Mini Lenovo PC Dead Power supply (ACbell PCH018)

Well, you want HIGHER values for R1 - that is, higher resistance. Lower resistance will only make it worse.


The simplest solutions are always the best, aren't they. :D

While at it, you should...
Forum: Troubleshooting Power Supplies and Power Supply Design 01-20-2021, 11:48 PM
Replies: 4
Views: 123
Posted By momaka
Re: Enermax Tomahawk ETK450AWT PSU Repair

Very nice write up, eigma. :)
I really enjoyed reading through your troubleshooting steps and how you got to finding those bad caps.

Those small caps going bad are quite a common occurrence we've...
Forum: Troubleshooting Power Supplies and Power Supply Design 01-20-2021, 11:23 PM
Replies: 18
Views: 484
Posted By momaka
Re: Mini Lenovo PC Dead Power supply (ACbell PCH018)

Instead of 10 KOhms for R1, try 100-330 KOhms. Since Q1 only needs to pull about 1.2 mA of current through R2 and knowing that the current gain on these 2n2222 transistors is at least about 100...
Forum: Troubleshooting Power Supplies and Power Supply Design 01-20-2021, 10:47 PM
Replies: 2
Views: 144
Posted By momaka
Re: BFG 1000 PSU BFGR1000WEXPSU Died Suddenly

Plug PSU in the wall and measure voltage 5VSB voltage - same deal as the throubleshooting I suggested for your Dynex PSU here:
https://www.badcaps.net/forum/showthread.php?t=92116

After this,...
Forum: Troubleshooting Power Supplies and Power Supply Design 01-20-2021, 10:42 PM
Replies: 4
Views: 175
Posted By momaka
Re: Dynex 350 Watt PSU self-starts

Well, if possible, please post a picture of your PSU here. We may be able to spot something that you didn't.

Apart from that, plug PSU in the wall and check for 5V standby (5VSB). That is, check...
Forum: General Computer & Tech Discussion 01-20-2021, 08:45 PM
Replies: 29
Views: 2,270
Posted By momaka
Re: Windows XP EoL Security Rollup...or similar?

I just tested this Mypal browser on an old trash-picked Sony Vaio laptop with 1.7 GHz Pentium M Dothan CPU and 512 MB of DDR RAM.

My impressions so far... holy molly! This browser actually works...
Forum: General Computer & Tech Discussion 01-20-2021, 07:25 PM
Replies: 55
Views: 7,618
Posted By momaka
Re: The longest you've ever used a single system?

Well, that was actually kind of fun reading back through the old posts in this thread. So thanks for reviving it, TechGeek. :)

In regards to the topic, the system I've used the longest I think is...
Forum: General Computer & Tech Discussion 01-20-2021, 05:18 PM
Replies: 17
Views: 1,082
Posted By momaka
Re: LG Gram

Probably around 3 years.
Manufacturers have gotten pretty good now about designing the useful life of the device for exactly as long as the -average- customer would need it to work. Thus, assuming 1...
Forum: General Computer & Tech Discussion 01-20-2021, 03:21 AM
Replies: 3
Views: 216
Posted By momaka
Re: Ideal Soldering Practice?

I concur with Uranium - it's pretty safe. Just make sure you do the following:

1) Use a good soldering iron stand that will keep the iron from falling out and accidentally burning something - most...
Forum: General Computer & Tech Discussion 01-20-2021, 03:03 AM
Replies: 20
Views: 816
Posted By momaka
Re: Topcat's XPS 625 Supermicro X8SAX Revival; First 2021 Build!

That's actually quite nice, even for modern times.
I think that CPU at that frequency should be comparable to a 7th gen i5, or maybe slightly better... which is still a perfectly usable CPU for...
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