Mirenia
Senior Member
Last Activity: 12-02-2025, 05:30 PM
Joined: 01-31-2024
Location: Dresden
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And here's the Boardview for REV1.1... -
Thank you for your detailed answer!
Already did a reflash of the BIOS Chip(s) with my chip programmer but the behavior stays the same as with flashing them via q-flash plus.
I came to the same conclusion as you that the X570 chipset itself could be partially shorted or so.
The resistance increases a lot if I put something cold (testet it with IPA and cold spray) on it.
-> Then I've got a reading of 56 ohms.
-> As soon as the chip goes back to room temperature its drastically decreasing back to 3 ohms.
I also checked resistance...Leave a comment:
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X570 AORUS MASTER - won't post with BIOS past F22 (rev.1.2)
Hi everyone,
I've got a strange issue with a X570 AORUS MASTER Rev. 1.2 motherboard. The owner (my cousin in law) told me that over time he got more and more bluescreens until the board won't boot/post anymore.
It showed only post codes "C8, C3" and won't boot
I found a few things:
- cpu was faulty/dead (For further tests I replaced it with my own ryzen 7 3700X)
- with new cpu motherboard only runs on BIOS version F22 and below
-> And windows only runs stable if I set PCIe in BIOS settings to Gen 3. On automatic settings I got random... -
I broke the BIOS Chip and couldn't order a replacement.
So I never figured out if it was the BIOS or not.Leave a comment:
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The surface was flat and it was no thick towel.
Thin like a kitchen towel but as big as the TV.
So I am wondering... but maybe that happened some time before.
the TV was stored for over a year because I never figured out what was wrong until I saw the thread regarding the firmwareLeave a comment:
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Hey, no I gave up on this thing.
didn't manage to order a replacement IC in my country.
So I sold it as defective for partsLeave a comment:
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It worked! TV is TVing again.
Thanks very much for your help and explanations!
(Unfortunately I somehow broke the panel... was very careful and layed it down on a soft towel. The panel is cracked across the entire screen. Maybe some stress/tension crack while I layed it down...)Leave a comment:
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Okay got it with the version numbe
Just one more (maybe stupid) question:
Is there some kind of editor or viewer which decodes samsung TV firmwares?
Actually I did everything "blind" with a standard hex editor....Leave a comment:
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Okay, so that means as an alternative I simple could've read the dump from eMMC and take that as my copy-source?
Learned something new today - thank you!Leave a comment:
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Oh sorry! Didn't wanted to ignore you. Took a while to write my comment. I'll check that out. Thank you a lot!!!!
EDIT: And it looks similar to my own fix!...Leave a comment:
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In the meantime I tried to fix the firmware myself. Found a working bin here in the forum from a UEMU61200 and copy/pasted the missing bits to my dump-file.
Could maybe one have a look at it, if I did it right?
(Cannot flash the file back to the IC, because I only have a EZP2019+ programmer, which is unable to set status register. But CH341 is already ordered and arrives in a few days)...Leave a comment:
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Samsung UEMU6199U - no Standby - bad Firmware?
Hi everyone,
I've got a Samsung UEMU6199U which has no Standby LED and no reaction if try turning it on.
Voltages on the power supply board is okay. Backlight test is also okay.
I read about a corrupt firmware on IC1604 on some models, did a dump of this IC and turns out: First sectors are empty.
So I think my TV has exactly this issue.
Can someone please fix the dump?
And how do you do that?
As I understand you fill in the empty sectors and leave the rest as it is. But where do you get the "information" of what you... -
Good news:
i replaced qv22 and qv23 with help of my other defective board and touchscreen is finally working!!!!Leave a comment:
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Maybe I found the culprit(s)...
QV22 seems to have emitted magical smoke. QV23 also looks like it has a burned bump.
In schematics they're responsible for Touchscreen power.
Does anyone know, what TS_5v_Det could means?
Detection if it is a 5V Touchscreen or a 5V rail, which detects if a touchscreen is connected?...Leave a comment:
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I would assume the same. My guess is that somehow on the motherboard the touchscreen signal is "scrambled"/malformed.
But maybe I need a little guidance from the experts here where to start troubleshooting/diagnosing.
(As I said earlier: Screen lid component and cables are replaced 2 times)
The mainboard has multiple connectors for everything in the screen lid. A "normal" display connector, a touch connector and two more for IR, camera, microphone and gyro stuff. As far as I could read from schematics: there are a few touchscreen related pins...Leave a comment:
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I'm on Win11. Tried nearly all relevant drivers on dell support page for the old servive ID and the new one.
Tried with the original Win10 image from dell as well.
Do you think, that it is really only a driver related issue?
Wouldn't the touchscreen work in BIOS without having the correct win driver installed?
The hardware ID of the faulty i2c hid device is strange, too:
ACPI\VEN_CUST&DEV_0000
I expected there some specific ID.
I tried to contact dell via whatsapp support. But never got the chance to write to a human...Leave a comment:
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I already tried to disable and enable it (multiple times) in device manager.
And tried to untick all power management checkboxes for every single device.
But you remind me of something unusual there:
The power management settings of the i2c host controller (which the touchscreen is connected to) resets with every reboot. So I have to untick the checkbox for power saving there every time....Leave a comment:
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Dell Latitude 7420 - Touchscreen not working since Mainboard replacement
Hi everyone,
I've got a little "problem child": my Dell Latitude 7420 2-in-1, which had a faulty mainboard.
I replaced it, but ever since, the touchscreen no longer works — and honestly, I’m running out of ideas…
In Windows Device Manager, I just see an I2C HID Device with error code 10. Sporadically, the touchscreen is recognized correctly for just a few seconds, but I haven’t been able to determine under which circumstances this happens.
The touchscreen also doesn’t work in UEFI/BIOS, although it’s enabled... -
Hi subzerillo,
I am using a EZP2019+ programmer with the EZP2019+ Software.
It works in most cases without problems.
You can add chips to the software database or modify some parameters.
But: This programmer only works with the EZP software. So no alternative tools like NEOProgrammer or AsProgrammer....Leave a comment:
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The issue was not only CMOS battery.
Had to do a reflow of CPU and GPU.
Now everything is working without problems...Leave a comment:
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