Samsung LCD TV LN-T4066F Help Needed
I was given an LCD TV with several problems but I thought it would be fun to try and repair it so I have gotten this far and know I am stumped. Here is what I have done so far.
1. I opened it up and inspected all of the internal components.
2. It would not power up so I inspected the power supply board and found two blown capacitors. They both measure WAY under the 1000uF they were rated for so I replaced those.
3. It was known that there were connection problems on the main board so I bought a cheap used one on EBAY and replaced it.
4. I reseated the ribbon connectors from the TCON board to the LCD display just in case before I did a test run.
It now has power, has a back light, has volume, and handles connections but it has the horizontal and vertical lines you see in the picture.
Not knowing anything about LCD displays I assumed that since there are two ribbon connectors that half of the LCD display is controlled by a set of circuits on the TCON board and the other half by the other set of circuits. So...I disconnected one ribbon connector to see if that would disable half of the LCD Display and yet the horizontal lines still continued across the entire screen.
So, I do not understand that if disconnecting one ribbon connector should have disabled half of the screen, AND if this most likely indicates a TCON board failure or an LCD display failure. How can I test both without spending money? I hope it is the TCON board since that is cheap. Thanks for the help.
1. I opened it up and inspected all of the internal components.
2. It would not power up so I inspected the power supply board and found two blown capacitors. They both measure WAY under the 1000uF they were rated for so I replaced those.
3. It was known that there were connection problems on the main board so I bought a cheap used one on EBAY and replaced it.
4. I reseated the ribbon connectors from the TCON board to the LCD display just in case before I did a test run.
It now has power, has a back light, has volume, and handles connections but it has the horizontal and vertical lines you see in the picture.
Not knowing anything about LCD displays I assumed that since there are two ribbon connectors that half of the LCD display is controlled by a set of circuits on the TCON board and the other half by the other set of circuits. So...I disconnected one ribbon connector to see if that would disable half of the LCD Display and yet the horizontal lines still continued across the entire screen.
So, I do not understand that if disconnecting one ribbon connector should have disabled half of the screen, AND if this most likely indicates a TCON board failure or an LCD display failure. How can I test both without spending money? I hope it is the TCON board since that is cheap. Thanks for the help.
Attached Files
Comment