LED TV with Full Screen of Colorful Vertical Bars Problem Solved!
Model: KONKA LED32F1160 LED TV Panel: BOE HV320WX2 Symptom: Screen fully of colorful vertical bars/stripes
A lots of TV repairers, when they see the TV like this, will tell the customer this is a screen panel problem and not worth repairing or its beyond repair! This is not a joke, because I’ve seen this happen many times around my area here. I also find lots of TV's with this symptom inside a “Recycle Center”! I’ve received an article written by one of my members who purchased my LCD/LED Screen Panel Repair Guide and other ebooks. He has successfully repaired a Konka LED32F1160 LED TV with a screen full of colorful vertical bars as per picture below:
As usual, learn from the ebooks. When the TV screen problem like this, first we check whether the T-con board top 5 voltages are present or not. If yes, then we will continue to checking their voltages and signals (for the Gate Drive side use) on the Source Drive board. If all voltages and signals are present, continue to check their Gate Driver side.
This HV320WX2 LED panel has 2 x Gate Driver (COF) ICs, or 2 Y-TABs. Their COFs IC part number is 8586-M. We can use the Bypass Modification method in LCD/LED Screen Panel Repair Guide, to do the troubleshooting and repairing. Refer to this part number COF IC testing point, found that the Y1 VGH (or as it is called "Von") voltage is missing! Normally it is about 24V. Different Panels have different voltages. As for this case, we can measure the Von testing point on the Source Driver board to know their exactly voltage.
Be careful to solder a thin wire (normally we will recommended to use transformer coil wire or laptop mainboard bypass wire, but this member was using normal wire) on the COF IC point.
To other end of the wire will solder onto the Source Driver board VON testing point there as per picture below:
Make sure everything is connected to their correct locations and points. Power on the TV. The LED Panel is working perfectly!
Conclusion: With the above repair case, it will look like easy to repair lcd/led panel right? But before that, you need to know the steps and knowledge on how to repair LCD/LED Panel first, after that you know how to troubleshoot and repairing the panel.
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