I need help. I have a Loewe ART 55 UHD TV

[Bestsound]

Hello. I’ve run into a problem with my TV: it uses the SL310 chassis, and the motherboard failed. By a stroke of luck, I found a working board, but it’s from the SL410 chassis. The image is upside down and split into three parts. Please help me configure the board to work correctly. Part number: 54459W80 03521, panel: HE550HUD-B31\GM\72104001\ROH

[Bestsound]

Guten Tag. Ich habe ein Problem: Bei einem Fernseher mit dem Chassis SL310 ist das Mainboard ausgefallen. Glücklicherweise konnte ich ein Ersatz-Mainboard finden, allerdings stammt es aus einem Gerät mit dem Chassis SL410. Das Bild ist nun auf dem Kopf stehend und in drei Teile unterteilt. Bitte helfen Sie mir bei der Einrichtung des Fernsehers. Soweit ich das verstanden habe, muss die Panel-ID geändert werden. Über das Servicemenü hatte ich jedoch keinen Erfolg, egal was ich versucht habe. Artikelnummer: 54459W80 03521, Panel: HE550HUD-B31\GM\72104001\ROH.

[jpceca]

??? Why did you bought the wrong Board??

Why dont you just buy the correct Board........its cheap, easy and the right way!

[Bestsound]

I couldn't find a suitable board for sale on its own—only one that came as part of a set with the TV, which had a panel with screen artifacts (lines).

[Bestsound]

Soweit ich das verstanden habe, muss die „Panel-ID“ geändert werden, damit der Fernseher ordnungsgemäß funktioniert – denn im Moment steht das Bild auf dem Kopf. Welchen Identifikator mein Gerät genau hat, konnte ich jedoch nicht zweifelsfrei feststellen.

[fswerkstatt]

You need Panel-ID 22 - check attachment.

Unzip and put both files into the root folder of an USB-stick (FAT32 formatted).
Plug in the stick, switch the TV on, wait until TV is fully booted (green LED)
and the stick isn't flashing anymore.
Switch off TV, remove the stick and restart TV. Picture should be correct now.
In case of problems try another stick.

[Bestsound]

Vielen Dank, ich werde es morgen ausprobieren

[Bestsound]

Guten Tag. Es benötigt eine Platine t-con mit einem 4-poligen Stecker. Ist das der richtige panelid?

[jpceca]

I couldn't find a suitable board for sale on its own—only one that came as part of a set with the TV, which had a panel with screen artifacts (lines).

You easily can order the correct Board at any official-Loewe Dealer and because of the "return-system" its also relatively cheap!

[Bestsound]

Hello. I managed to initialize the TV, but not with Panel-ID 22; instead, I used ID 4, which I found in similar inquiries. However, when attempting to update it, the process is interrupted with an error stating that loading failed. The TV takes longer to shut down, and the LED changes to white, yet the backlight remains on. I have a donor TV from which I took the mainboard, the main power supply unit, and the backlight power supply unit (from an SL410 chassis). Perhaps I shouldn't have replaced the main power supply and the backlight power supply?

[Robotnik]

No, its a PanelID Problem, please try No. "4" or "7" you can change the number in one of the two files in the zip.File with the editor.
The USB-Stick must be inserted when switching on the tv. Perhaps change the USB-Stick, older models are better.

[Bestsound]

Thanks, I'll give it a try. ID22 didn't change anything; ID4 flipped the image and split the screen into three parts, but that artifact was fixed. So, I guess ID7 is the only one left to try? I haven't found any other service files with IDs.

[Bestsound]

The problem now is this: there is an image and the picture quality is excellent, but the colors don't look like Loewe's signature colors, and motion is jerkier than usual. Google's AI produced this result: Why does the firmware update stop at 50%? An update hanging or resetting at exactly 50% completion is standard behavior for the Loewe bootloader when the software version in the update file conflicts with the current hardware configuration (Chassis ID/Panel ID). Chassis structure mismatch: You have installed a board from an SL410 but are attempting to use Panel ID 4, which—in the SL410 firmware database—is associated with a specific T-Con type and panel timings for the SL310. Verification checkpoint (50%): The first 50% of the process involves unpacking and loading the software into RAM. At exactly the 50% mark, the verification procedure begins: the system reads the hardware configuration (including the T-Con of your old display panel) and compares it against the table of authorized IDs within the firmware. If a critical mismatch is detected, the process aborts to prevent "bricking" the board. Is this an accurate description of the problem? How can it be solved?
Please let me know if anyone knows how to solve this problem.