Troubleshooting Older Liquid Crystal Display Televisions: A Quick Guide
Are you stuck with an older Liquid Crystal Display Television that is not working properly? In this post, we will delve into a step-by-step troubleshooting process that can help you quickly rectify common issues with these devices. In the Youtube video embedded above, a Dynex DX-LCD37-09 liquid crystal dispaly television received a "no display stand by" message.
Identifying the Television and Initial Inspection
The television in question is a Dynex liquid crystal display color television model DX-LCD37-09, manufactured in May of 2008 two thousand and eight. Before diving into the internals, it is essential to take note of the model and age of the television set. When I received it as a recycled television, the display did not work when initially powered on.
Opening up the Television and Disconnecting Cables
To begin the troubleshooting process, you will need to carefully remove the screws securing the television's cover. Once inside, you will want to exercise caution around components like capacitors and focus on disconnecting all power and video cables as demonstrated in the Youtube video embedded above. You can carefully remove each power and video cables.
Resetting and Reconnecting Cables
After disconnecting all the power and video cables, you will want to hold the power button for up to a minute to discharge any built-up static electricity also known as electro static discharge. Following this precautionary step, you can then allow the television to sit for a few minutes before reconnecting the power and video cables. You will want to connect each power and video cable tightly into the socket you removed them from.
Testing and Powering on
Once all power and video cables are connected again, you will want to then power on the television and observe any changes in the display indicators. In the case of the Dynex DX-LCD37-09 liquid crystal display television, successful troubleshooting was indicated by the green "power on" light staying illuminated without reverting to standby mode. Initially that television would display a "no display stand by" message when turned on.
Final Checks and Potential Repairs
If the television successfully powers on and functions correctly, you can proceed to test its functionality with external devices. For more serious issues requiring component replacement, researching the availability and cost of replacement boards may be necessary. Thankfully, I did not need to replace any components for example the backlight, power switch, etc.
If your older liquid crystal display television still does not successfully show video, then you may need to troubleshoot further. You can look for any blinking light codes, error messages on the display, etc. Also, if you have a multimeter and are capable of troubleshooting voltage, you could narrow down what might be failing.
Often times power boards and or back light computer boards will fail on liquid crystal display monitors and televisions. If you have narrowed down a failing power and or back light board, you can try to find a replacement on the Internet. You can look for the part number on the actually failing board and perform and Internet search for a replacement.
In conclusion, troubleshooting older liquid crystal display televisions can often be a straightforward process involving careful cable management and system resets. By following the steps outlined in this guide, you may be able to breathe new life into your aging television set without the need for expensive repairs or replacements. Some of the time, all that is necessary, is disconnecting and reconnecting all video and power cables.