Facing TV Problems? Ask a TV Technician.
Hi there. My name is ***** ***** I am one of the TV experts here.
Did you also replace the two or three buffer boards attached to the SC board, or just the SC board?
Let me know.
Ok. It is common with a 7 blink code for the either the SU or SD (or both) buffer boards to fail making it look like it is the SC.
There is a way to test those boards. You will need a multimeter to check the boards. Do you have one?
If you give me 5 minutes I'll see if I can upload the pages you need from the manual.
Let me know if that works for you.
Ok. Please give me 5-10 minutes to get this together for you.
I'll be back.
I'm sorry for the delay. The manual is on my work server and I am having some issues getting to it.
As soon as I have it, I will reply.
I'm sorry about this.
Ok, I'll have to do it by memory. Sorry about this.
We need to isolate the SU and SD boards. Unplug TV from wall.
First, remove the two screws holding each board to the chassis.Then disconnect connectors SC41, SU45, SD46 and SC42. This isolates SU and SD from the rest of the TV.Plug in and turn on the TV and tell me the blink code if any.Do not leave the TV on for more than 30 seconds.Let me know your findings.
The connections are on the SC board - the one you swapped out. Two smaller boards are connected to the left side of that SC board. Those are the boards we are disconnecting.
Ok, do you get a blink code when you turn on the TV?
Hi there and good morning."Successful"?? What happened?
Please let me know.Steve