Exim
Senior Member
Last Activity: 04-12-2025, 03:39 PM
Joined: 05-30-2011
Location: NDS
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Thanks for the file. But this seems to be the original unmodified 1.10 bios from ASRock. Flashing this or the original 2.01, which is also available at ASRock, does not solve the problem, unfortunately. -
ASRock N100M looking for Bios
Help request:
I am trying to solve a problem with an ASRock N100M board, it seems to be stuck in an infinite loop in POST (all details and a short video [URL="https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-desktop-motherboards-graphics-cards-and-pc-peripherals/3605882-asrock-n100m-no-picture-no-boot-but-semi-alive"]here[/URL]). External flashing of the available bios versions does not solve the problem.
I don't know if this is a hardware problem or possibly a corrupt ME region in the bios. Therefore I am looking... -
Test, trying to turn it on with a wiped (all FF) bios chip: As expected, power button / power pins on the board do not work. When switching on the power supply manually (connecting PS_ON with COMMON on the ATX connector), two board LEDs light up, otherwise no POST activity.
So the board [U]does[/U] read Bios code and executes it, at least parts of it. Question: You still need a working x86 CPU for this, because still today this initialization is performed by the x86 CPU itself and not by an integrated or external microcontroller, right? It still today needs the CPU to do the "no...Leave a comment:
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ASRock N100M, no picture no boot, but semi-alive
Hi guys,
I managed to semi-kill an ASRock N100M board after updating Bios from 1.10 to 2.01. It's a zombie now, dead, but not dead.
ASRock N100M special features:
- CPU soldered to board, small Intel 12th gen
- iGPU
- four POST LEDs
Problem after updating Bios to 2.01 using the in-Bios update tool: no picture, no boot.
I am not sure anymore if it booted at least once successfully after updating the bios to 2.01, maybe not, I can't remember. I think it did not.
Symptoms:
- no picture/signal on any of the display connectors,... -
Re: Post help identifying capacitors here
The basic values are there, but no (known to me) manufacturer, no series name, no date code.
Me neither, found an old useless mfrbee.com entry pointing to China and nothing else. Ok, I think it is necessary to take a closer look at the circuit to find suitable replacement types. Will do that later in the power supply forum.
Thanks for commenting....Leave a comment:
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Re: Post help identifying capacitors here
Can anybody identify these "ELFL" ones? Found them bulged in a 15 years old office table motor controller with a blown bridge rectifier. Looking for a datasheet but couldn't find anything with "ELFL"....Leave a comment:
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Re: Asrock X470D4U server board.
There's a 4.21 Beta: [url]https://download.asrock.com/BIOS/Server/X470D4U(L4.21)ROM.zip[/url]Re: Asrock X470D4U server board.<br ...)ROM.zip[/url]...Leave a comment:
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Re: Asus M2A-VM preventive KZG recap, as it turned out unnecessary in this case
Nice, thanks for the link.
The new caps are on the board. Running some tests ATM.
Thanks for the comments. Much appreciated.
...Leave a comment:
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Re: Intel D410PT, KZG replacement
Thought I had a few FM 6,3/1000 ones, but no, it was a bunch of 6,3/1500.
So now it's a little overkill and it looks a little funny. However, specs wise it's beyond any doubt.
[CODE]KZG 6,3/820 0.036/1140 8x11,5 mm
FM 6,3/1500 0.019/2180 10x20 mm[/CODE]
Thanks guys.
...Code:Re: Intel D410PT, KZG replacement Thought I had a few FM 6,3/1000 ones, but no, it was a bunch of 6,3/1500. So now it's a little overkill and it looks a little funny. However, specs wise it's beyond any doubt.
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Re: Recapping a DC-DC converter, 12V to ATX, which caps to use?
The four new FRs are in place, board is working fine.
Didn't bother to take out the remaining general purpose "EVA Top" ones. They all measured "something". Good enough.
...Leave a comment:
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Re: Asus M2A-VM preventive KZG recap, as it turned out unnecessary in this case
What date(s) are printed on the removed ones?
Yes, they were. Or are. If the right caps were/are on.
Actually I liked the M2A-VM a lot back then. And I still do. It's an AM2 board with IGP and DVI-D, it has support for some AM3 CPUs and there's a version with an HDMI connector as well. PCIe is 1.1 only, but it already has SATA II / 300 Mbit. And Gbit LAN. With 8 GB of CL5 DDR2 RAM, a reliable SSD, an Athlon II X2 250 (AM3, K10, 3.0 GHz DualCore,...Last edited by Exim; 11-17-2020, 03:45 AM.Leave a comment:
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Re: Intel D410PT, KZG replacement
Yeah, ESR is worse, but just by 2 mOhms.
[code]KZG 6,3/820 0.036/1140 8x11,5 mm
FM 6,3/1000 0.038/1290 10x12,5 mm[/code]
Waiting for parts to arrive. There's some delay because of COVID-19, dealer says they have way more orders than usual....Code:Re: Intel D410PT, KZG replacement Yeah, ESR is worse, but just by 2 mOhms. [code]KZG 6,3/820 0.036/1140 8x11,5 mm FM 6,3/1000 0.038/1290 10x12,5 mm[/code] Waiting for parts to arrive. There's some delay because
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Re: Recapping a DC-DC converter, 12V to ATX, which caps to use?
[URL="https://www.badcaps.net/forum/showpost.php?p=14717"]He[/URL] put a single - from the color I'd guess MBZ - Rubycon on each rail. So I guess two FRs in parallel on each rail will do the job.Re: Recapping a DC-DC converter, 12V to ATX, which caps to use?
[URL="https://www.badcaps.net/forum/showpost.php?p=14717"]He[/URL] put a single - from the color I'd guess MBZ - Rubycon on each rail. So I guess two FRs in parallel on each rail will do the job.Re: Recapping a DC-DC converter,Last edited by Exim; 11-10-2020, 12:47 PM.Leave a comment:
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Recapping a DC-DC converter, 12V to ATX, which caps to use?
This "beautiful" converter board is from an old Mini-ITX case. It uses 12V DC as input and converts it to ATX voltages.
I'd like to recap it. The machine is in use 24/7 as a router.
A: "E.V.A. Top"
470µ/16V
B: Sanyo WX 470µ/16V (in the 12V rail)
C: (currently four bulged junk caps that need to go) originally these were four green sleeved low quality 1000µ/6,3V caps that blew up years ago (the upper two are in the 5V, the lower two in the 3,3V rail)
My plan is:
A: measure, if not ok replace with Chemi-Con...Last edited by Exim; 11-10-2020, 08:53 AM. -
Intel D410PT, KZG replacement
Intel D410PT, a Mini-ITX board with a single core Atom D410 onboard, TDP 10W, passive cooling. It's used as a router and running 24/7 since years.
There are Rubycons, Nichicons, some cheap looking caps I can't identify in the audio circuit, two Vcore caps I also can't identify - and a single KZG, the KZG is the only one that popped.
The KZG will be replaced with a Panasonic FM 6,3/1000 I have at hand.
Does anybody recognize the manufacturer of these two?
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Re: Asus M2A-VM preventive KZG recap, as it turned out unnecessary in this case
Ah, you're right, that's the 8x20 KZGs, not the 10x16. I'll get some FRs then. regarding ESR and ripple KZG are 0.021/1870, FR and FS are 0.030/1560. Close enough....Leave a comment:
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Asus M2A-VM preventive KZG recap, as it turned out unnecessary in this case
This Asus M2A-VM was running 24/7 for 12 years without problems. CPU was a TDP 45W DualCore only, but still, 12 years are 12 years. I'm preparing this board as a spare part, it has to replace another one with blown caps. So before using it as a spare part it obviously needs to be checked. Because of the [URL="https://www.badcaps.net/forum/showthread.php?t=28796"]collection of bad caps usually on this board[/URL] I was prepared for the worst.
Surprise #1: This particular board is an "almost-exclusively-Panasonic" specimen. It has the usual four 1000/16 Chemi-Con...Last edited by Exim; 11-08-2020, 06:06 PM. -
Re: Yamaha YST-MS25 amp board recap: replace small electrolytics with different type?
Yeah, but you need to know how handle it.
Yes, since replacing two replacement caps with replacement caps
it's working fine again.
The initial reason for the left channel volume drop was probably one of the very small old caps around the pre-amp. Couldn't measure all of them, my ESR meter only handles caps >= 1uF.
The new solder joints are ok and shiny, the camera is just crap.
...Leave a comment:
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Re: Harmon Kardon HK206 PC speakers
You could start with checking the power supply. If it's plugged into the main speaker (instead of a fixed cable) so you can measure without disassembling: Does it deliver the specified voltage and amps, also if loaded? Also check for loose/broken cable or plug.Last edited by Exim; 11-10-2018, 09:48 AM.Leave a comment:
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Re: Yamaha YST-MS25 amp board recap: replace small electrolytics with different type?
Replaced all electrolytics up to 10uF with PET films, the others with Pana FC.
It is (well, it was) fixed. Left channel working fine again.
The signal path between input and power amps now contains PET films only, the remaining signal-path-electrolytics - now FCs - are between the power amps and the speakers.
My impression is that actually the sound is a little different, less bass, treble is about the same. All subjective, no science. If this comes...
Last edited by Exim; 11-09-2018, 05:41 PM.Leave a comment:
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