{"id":17866,"date":"2026-01-09T06:08:17","date_gmt":"2026-01-09T06:08:17","guid":{"rendered":"https:\/\/cob-leddisplay.com\/?p=17866"},"modified":"2026-01-09T08:12:27","modified_gmt":"2026-01-09T08:12:27","slug":"reasons-for-a-white-screen-on-an-led-display","status":"publish","type":"post","link":"https:\/\/cob-leddisplay.com\/de\/reasons-for-a-white-screen-on-an-led-display\/","title":{"rendered":"Gr\u00fcnde f\u00fcr einen wei\u00dfen Bildschirm auf einem LED-Display"},"content":{"rendered":"

Ein wei\u00dfer Bildschirm auf einem LED-Display wird nicht durch den Ausfall einer einzelnen LED-Lampe verursacht, sondern durch einen System- oder regionalen Signal-\/Stromversorgungsausfall.<\/p>\n

Aus optischer Sicht entsteht wei\u00dfes Licht durch das Mischen gleicher Anteile der Prim\u00e4rfarben Rot, Gr\u00fcn und Blau. Bei einer Fehlfunktion der Ansteuerschaltung (z. B. der Empfangskarte oder des Hub-Boards) kann es vorkommen, dass der rote Chip nicht angesteuert wird, w\u00e4hrend die blauen und gr\u00fcnen Chips hell leuchten. Die Mischung dieser beiden Farben erscheint dann cyan oder gr\u00e4ulich-wei\u00df.<\/p>\n

Alternativ, und h\u00e4ufiger, verliert die Signalverarbeitungskette vollst\u00e4ndig die Kontrolle, wodurch alle Chips zuf\u00e4llig Licht mit maximaler Helligkeit aussenden, was zu einem wei\u00dfen Vollbild f\u00fchrt.<\/p>\n

Ursachen des Problems und L\u00f6sungsans\u00e4tze:<\/p>\n

I. Probleme mit der Signalquelle und dem Steuerungssystem (treten am h\u00e4ufigsten bei Neuinstallationen oder Inbetriebnahmen auf)<\/strong><\/p>\n

1) Eingangssignalanomalie:<\/p>\n

\u2013Die Aufl\u00f6sung oder Bildwiederholfrequenz des Signalquellenger\u00e4ts (Computer, Abspielger\u00e4t) \u00fcbersteigt den Empfangsbereich des LED-Displays, was zu einem wei\u00dfen Schutzbildschirm auf dem Display f\u00fchrt.<\/p>\n

\u2013Problem mit dem Signalkabel: Eine schlechte Qualit\u00e4t, eine zu lange oder eine lose Verbindung des HDMI\/DP\/DVI-Kabels kann zu Signalunterbrechungen f\u00fchren.<\/p>\n

L\u00f6sung: \u00dcberpr\u00fcfen Sie die Einstellungen der Signalquelle und passen Sie diese an die vom Display unterst\u00fctzte optimale Aufl\u00f6sung\/Bildwiederholfrequenz an; schlie\u00dfen Sie das Signalkabel erneut an oder ersetzen Sie es durch ein k\u00fcrzeres, qualitativ hochwertigeres Kabel.<\/p>\n

2) Fehler in den Einstellungen des Steuerungssystems<\/p>\n

\u2013Die Parameter der Sende-\/Empfangskarte fehlen oder sind fehlerhaft: Einstellungen wie Bildschirmbreite\/-h\u00f6he (in Pixeln), OE-Polarit\u00e4t, Scanmethode, Datenflussrichtung usw. sind falsch.<\/p>\n

\u2013Es wurde ein falsches Programm oder eine falsche Konfigurationsdatei geladen.<\/p>\n

L\u00f6sung: Verwenden Sie die Steuerungssoftware (z. B. Nova, Linsn, Colorlight usw.), um die Parameter neu auszulesen oder korrekt einzustellen und die richtige Konfigurationsdatei zu laden.<\/p>\n

3) Hardwareausfall des Steuerungssystems:<\/p>\n

\u2013Fehler beim Senden der Karte: Signale konnten nicht ordnungsgem\u00e4\u00df verarbeitet und verteilt werden.<\/p>\n

\u2013Fehler bei der Empfangskarte: Eine oder mehrere Empfangskarten sind besch\u00e4digt, was zu einem leeren Bildschirm im\/in den entsprechenden Schrank(en) oder Bereich(en) f\u00fchrt.<\/p>\n

L\u00f6sung: Pr\u00fcfen Sie, wie gro\u00df der leere Bildschirm ist. Ist der gesamte Bildschirm leer, \u00fcberpr\u00fcfen Sie die Sendekarte und die Hauptsignalverbindung. Handelt es sich um einen begrenzten, regelm\u00e4\u00dfigen leeren Bildschirm (z. B. eine ganze Spalte oder Reihe von Schr\u00e4nken), \u00fcberpr\u00fcfen Sie die zugeh\u00f6rige Empfangskarte. Tauschen Sie die Komponenten testweise gegen Ersatzteile aus.<\/p>\n

\"\"<\/p>\n

II. Probleme der Stromversorgung und -verteilung<\/strong><\/p>\n

1) Stromversorgungsausfall: Besch\u00e4digung oder Alterung des Moduls, was zu einer \u00fcberm\u00e4\u00dfig niedrigen Ausgangsspannung f\u00fchrt (z. B. unter 4,5 V).<\/p>\n

2) Probleme mit der Verkabelung: Schlechter Kontakt, Oxidation oder zu d\u00fcnne Kabel, die zu einem \u00fcberm\u00e4\u00dfigen Spannungsabfall am Ende f\u00fchren.<\/p>\n

L\u00f6sung: Messen Sie die Ausgangsspannung des Netzteils im fehlerhaften Bereich (sollte etwa 5 V betragen); \u00fcberpr\u00fcfen und ziehen Sie alle Anschl\u00fcsse des Netzteils fest.<\/p>\n

III. Probleme mit der Daten\u00fcbertragungsverbindung (Gebiet mit hoher Inzidenz)<\/strong><\/p>\n

1) Probleme mit Netzwerkkabeln\/Glasfaserkabeln: Lose oder besch\u00e4digte Verbindungen, die oft zu St\u00f6rungen im gesamten Verteilerkasten f\u00fchren.<\/p>\n

2) Probleme mit Flachbandkabeln: Lose Verbindungen, Abl\u00f6sung oder oxidierte Kontakte, was h\u00e4ufig zu Anomalien in einzelnen Modulen oder Zeilen\/Spalten von Pixeln f\u00fchrt.<\/p>\n

L\u00f6sung: Trennen Sie zuerst die Stromversorgung und schlie\u00dfen Sie dann alle Datenflachkabel wieder an und reinigen Sie die Kontakte; \u00fcberpr\u00fcfen und ersetzen Sie anschlie\u00dfend das Netzwerkkabel\/Glasfaserkabel.<\/p>\n

IV. Probleme auf Modul- und LED-Panel-Ebene<\/strong>
\n1) Besch\u00e4digung des Treiber-ICs: Ausfall von Zeilen-\/Spaltentreiberchips (wie z. B. 4953, MBI5124).<\/p>\n

2)Leiterbahnunterbrechung auf der Leiterplatte: Durch Korrosion oder St\u00f6\u00dfe sind Durchkontaktierungen oder Leiterbahnen unterbrochen.<\/p>\n

L\u00f6sung: Erfordert Fachpersonal mit Spezialwerkzeugen (Hei\u00dfluftpistole, Multimeter) f\u00fcr den Chipaustausch oder die Drahtreparatur; gegebenenfalls muss das Modul ausgetauscht werden.<\/p>\n

V. Software- und Synchronisierungsprobleme (f\u00fcr synchronisierte Bildschirme)<\/em><\/strong><\/p>\n

1) Der Grafikkartentreiber des Computers ist fehlerhaft, oder die Parameter der Wiedergabe-\/Steuerungssoftware sind falsch eingestellt.<\/p>\n

L\u00f6sung: Aktualisieren Sie den Grafikkartentreiber, starten Sie die Steuerungssoftware neu und \u00fcberpr\u00fcfen Sie sorgf\u00e4ltig alle Einstellungen der Anzeigeparameter.<\/p>","protected":false},"excerpt":{"rendered":"

Ein wei\u00dfer Bildschirm auf einem LED-Display wird nicht durch den Ausfall einer einzelnen LED verursacht, sondern durch einen systemweiten oder regionalen Fehler in der Signal- oder Stromversorgung. Optisch betrachtet entsteht wei\u00dfes Licht durch die Mischung gleicher Anteile der Prim\u00e4rfarben Rot, Gr\u00fcn und Blau. Wenn die Ansteuerschaltung (z. B. die Empfangsschaltung) [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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