Panel DC to DC Voltages
Hi Friends! In this tutorial, we will teach you all about LCD/LED Screen panel dc to dc circuit and voltages testing points on the panel in an easy way, I will tell you how to check panel voltages in an easy way. I have mentioned a table below you can check all the voltages according to this table, for example, AVDD, VGH, VGL, VDD, Hvdd and much more.
Panel Voltages Missing Problems
| Missing Voltages | Problem |
|---|---|
| 12v | White Display |
| 3.3v | White Display |
| HVDD Voltages | White Display or Picture Problem |
| AVDD Voltages | White Display-Negative Picture |
| VGL Voltages | White/Blue Display With Lines |
| VCOM Voltages | Negative Picture-Brightness Dim |
| DVDD Voltages | White Display-Blinking Picture |
| VGA Voltages | No Picture |
| VGL Voltages | Slow Picture |
Please see the below table if you are getting the problem from these all problems then see the second table and also see what voltages are missing. You should have all voltages on the DC to DC IC Voltages Test points according to this table, if you are getting all the voltages, then you have to diagnose other things, it’s not DC to DC IC Problem. Otherwise, if you are not seeing all the voltages according to the table then you can give correct voltages to the point by the table.
Screen Panel DC to DC IC Voltages
| NO. | Testing Point | Min Voltages | Max Voltages |
|---|---|---|---|
| 1 | VGH | 25v | 32v |
| 2 | VON | 25v | 32v |
| 3 | VGON | 25v | 32v |
| 4 | VDDG | 25v | 32v |
| 5 | VGL | -5 | -10 |
| 6 | VOFF | -5 | -10 |
| 7 | VGOFF | -5 | -10 |
| 8 | VEEG | -5 | -10 |
| 9 | VDD | 3.3v | 3.3v |
| 10 | VLOGIC | 3.3v | 3.3v |
| 11 | VDDD | 3.3v | 3.3v |
| 12 | DVDD | 3.3v | 3.3v |
| 13 | VDA | 12v | 14v |
| 14 | AVDD | 12v | 14v |
| 15 | VDDA | 12v | 14v |
| 16 | VSOURCE | 12v | 14v |
| 17 | HAVDD | 8v | 9v |
NOTE: Please do al the operations at your own risk, we will not be responsible if you do any problem during the repair.
Thank sir
What is the sulotion if the image is slow motion.
thanks
yes sir
auo m195xtn01.0 scaler board ka dc to dc points please
Sir, U r really great
Thank you very much my friend to share this post to us.
Thank you very much my friend to share this post to us.
Thank you very much my friend to share this post to us.
Thank you sir.realy your service is grate .this is more helpfull artical for us.
Hell. I do appreciate the efforts that have been exserted on this webpage, and its so helpful. What i have realised, there is no VCOM voltage on the testing points list, although it has been mentioned on the first table.
Lots of thanks.