TV Repair Questions? Ask a TV Technician
Thank you for posting your question on Just Answer! I will be happy to help you with this problem. Can you please give us some more information so I can better answer your questions.
-Do you get 10 blinks when you plug it in or 10 blinks after power button is pressed?
Please give me this information and I will be happy to assist you further.
It starts when I plug it in. If I press power and hold it in, the 10 blinks start again. Seems pretty common, sadly.
You dont by chance have a computer hooked to the tv through HDMI do you? OR a HD Explorer 8300 cable box?
OK very good then we definitely have an internal failure in the set. The reason 10 blinks is so common on this set is because there are so many things that can cause it. There is a long troubleshooting chart that I can walk you through if you like. Do you have the tv open and a meter handy?
No, I can't do it right now (kids). Would you suggest sending me the steps or scheduling a time later to walk me through it? Is it fairly easy to troubleshoot?
Ok once it is open the first thing i need to know is:
Do the AC relays click after TV is plugged into AC line?
Ok check to see if we have 15v at Pin 7 of connector P6/A6 when the tv is plugged into the AC line.
Use any of the metal on the back of the panel for ground when checking this voltage.
Ok.. doesnt seem like anything to P6, connector 7.
Then, when i was looking for A board, i disconnected and reconnected AC, and this time I did not hear relays.
Then I did it again, relays clicked.
No voltage at pin 7 of A6 or P6.
No voltage at pin 7 is what I suspected, you have a bad P board it is not putting out the 15v line therefore the tv will not run. We have replaced 20 p boards to every A board in this model with this symptom so I am quite confident that you will fix it with the P board.
ETX2MM704MGH is the part number you will need.
If you would like any additional information or have more questions please don't hesitate to ask!
Please never accept an answer until you are 100% satisfied and feel you can leave positive feedback. If I have answered your questions and met your needs then please press the green "accept" button. Otherwise please feel free to ask anything else to get your problem resolved. Positive feedback is always appreciated! Thank you,Tim Nolan
The P board is the power supply.....
The power supply is getting power because the red light is blinking on the back, you know you have AC because it is clicking so there wouldn't be anything to test, you can hear and see that it has power.
Let me know if you have more questions.
right, duh. been a few years since I did this stuff :-)
VERY last question, i promise. Scale of 1-5, 5 being hardest.. how easy is it to replace P board? I assume just the series of connectors ? Or should I have someone do it?
Thanks a ton, very helpful. will be happy to be a reference if you need one.
Taking the back off is harder then replacing the board...if you look the board we are going to change is the board that P6 is on, so you will need to disconnect those three larger connectors, then above them you have a smaller connector, and then in the top right and top left of the board there is 2 large 2 wire connectors you have to take these off as well.
Then you have to unplug the AC input wire which is a large 2 wire connector in the bottom right. This description should be close, I am going off of memory as I don't have a board in front of me but it should only be those 7 connectors and then about 9 screws.
Disconnect the connectors, remove the screws, pull the board out, put the new board in, put the screws in, make sure you remember where the wires were and plug them back in and you are all set. of course...make SURE the power is DISCONNECTED before you begin ;)
Let me know if you have more questions, I am here to help.
Replaced the P board. Now, the relays click, and bo flashing LED. But then, we I press Power, I get 2 blinks.
When I test P6 pin 1, I get voltage but then it slowly drops down to 0. Does this mean the A board is also bad in your opinion?
Could it be the voltage adjustment to Vsus - I just read in the service manual? I didnt do that.. I'll try tonight. If you get a chance, pls let me know any advice.
You are getting 2 blink pause 2 blink pause repeat?
Sorry I have been slamed with work, I will do my best to help you as fast as possible.
No prob. yes, its 2 blinks pause repeat, AFTER turning on. When just plugged in, I get nothing automatic. No priming, etc. Relays still click.
I found the diag manual and I followed the 2 blink route, and it seems to point to the D board, but I am nervous about spending more $. Maybe its time to call a repair shop?
OK here are some notes on the 2 blink:
-Reseating the connector P25 may solve the problem
-unplug the unit disconnect the connectors A5, A6 and A7 apply power to the tv. If a white screen comes up and all voltages check normal replace the P board
Check these two things and then let me know what happens, also you said you get voltage on P6 but it slowly drops, do you get the full 15 volts now as where we got 0 before?
I have to go run 5 tv service calls, I will be back once done and check in on you, sorry I cannot stay but I have customers waiting on me...Sorry.