KLV-40R352C Screen Not Displaying: Fault FixÂ
KLV-40R352C No Display Panel Fix: Sony Unit Panel Problem Solution CKLVB1 and CKVB2 of this panel were showing a short circuit between each other on the left side. The same short circuit was also on the right side, but the resistance was less there, so I decided that the real problem was on the left side. How did I solve it? Let’s know step by step.
Gate Drive Short Fault and Solution
The gate drive is a critical circuit component that provides signals and power to various sections within the panel. If there is a short circuit in the gate drive, the display on the screen disappears completely, or the image is not displayed correctly. In such a case, the short line is carefully cut and isolated from one side so that the fault can be cleared and the panel can start working normally again.
Fix for Gate Drive Fault with Vertical Lines
I isolated only the gate drive from the left side of this panel, then the display appeared on my screen, but some vertical lines appeared on the screen. To control this, I grounded the gate drive cut from the side of the cowl, due to which the lines almost disappeared: Note: This is a temporary solution. Some panels last a long time with this solution, and some very quickly go into a no-display fault.
High-Resolution PDF Preview of Gate Drive Fault
Below we are showing you a high-resolution image of this fault in a PDF preview, in which the fault can be visually observed. In the images, we have identified the gate drive line, which has been isolated. You can zoom in and scroll through this PDF file to see its smallest details. Sony LED TV Repair will continue to work for your convenience.
Double tap and then scroll to detail preview.
ConclusionÂ
KLV-40R352C No Display Panel Fix In this article, we solved the screen problem of the Sony LED TV. There was a short circuit in its gate drive. We isolated it and solved it. My experience with this type of fault is that this solution works on the fifty-fifty principle, which means that this screen may continue to perform for years or for some time.
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Shaukat Ali has over 30 years of experience in LED TV repair, specializing in chip-level repair work. He is an expert in Sony LED TVs, and also repairs other major brands like Samsung, TCL, Orient, and Haier. His expertise includes display panel faults, motherboard issues, power supply circuits, T-Con, and HDMI faults. Based in Lahore, he shares real-time fault finding cases from daily repair work to help technicians and learners with practical experience.
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