TV Repair Questions? Ask a TV Technician for Answers ASAP
Is the light blinking and pausing red please?
So thelight is blinking and pausing please count the amount of red blinks between pauses please like 3 blinks pause 3 blinks as an example?
Or is it continuos blinking?no pause
You have replaced wrong boards how old is the set please?
The set is not booting you need to replace the mainboard that is the one with all the AV input connectors attached, you need to get the part-number from the board itself and use that
Let me know if you need more help
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Does the sound stay on ALL the time or does this go off too when it powers down?
Is the part-number exact as original main-board?
The board you got should have exactly the same symptoms as your old board if the fault is elsewhere (which I doubt) so if that is not the case send that board back as its bad, this is not unusual I get about one board in every 4 or 5 bad because they are pulled from scrap sets new boards would not be viable
If they dont have another look elsewhere
I still think this is a mainboard issue it could be bad backlights but if that was the case you should see some indication on the display
A new main may be costly we all fit pulled boards in this industry
No you should have same symptoms you see that is logical because if the mainboard is good and that board is good should be same symptoms fault elsewhere, but that is not the case there are different symptoms with replacement board so it should either work or show same symptoms as existing board that is not happening
No really its no bother so please do not concern yourself with that
I really think you are not getting the correct mainboard logically it does not make sense , if the fault was elsewhere and you are sticking in exactly the same board,,,,,, should you not have EXACTLY the same symptoms,,,,,,?have a think about that because I believe you should.
Usualy this is because the boards are different in one way or another or fault
Yes the light flashes red and off red off... slowly <<<<<you are very sure its just one blink pause one blink etc?
Which did not fix it. And then the LCD board, which did not fix it <<<what do you mean by LCD board?what board are you referring to?there is no board called an LCD board?are you referring to maybe a separate LED driver board?
This set is your own set?it was originally working well?you have not picked this up from somewhere?
Can you take photos please first of the inside of the set with all boards then of the two mainboards you have ,use the paperclip on your toolbar thanks
By the way for your re-assurance I am in the UK myself near Warrington
Yes that is the tcon board but I would not have thought it would cause this issue, please as a test just pull out the input to it from the mainboard and let me know if there is any change in the sets behaviour, I am referring to the ribbon lead going into it from the mainboard, the set ordinarily will go off anyhow if it was working however I am looking for a change in behaviour, I still though think two things either the main-boards you have are all somehow bad in one way or another OR there is a backlight problem and that would be very bad news, unfortunately there is no way or effective way to check either
Let me know about the tcon check
Let me just say its not impossible for the tcon to be causing this but I would expect a change in behaviour if the tcon is bad, I would not ordinarily be suspecting this board at all as the cause anyhow, where are you getting the mainboards from please?
Also do the same with the LED driver board disconnect it and fire the set up let me know if there is any change
Have you tried www.flattvparts.co.uk or lcdtvparts.co.uk?
I dont like ebay for this
The only other catastrophic thing is the LED backlights , please let me know about the LED board disconnect and any behaviour changes
So what will happen is the backlights wont be driven and you should get a longer start up sequnce to maybe a green light of 15 to 20 seconds before shut down
This will tell me the backlights are bad that is bad news if so
Yes thats it, then fire up the set note any changes
No it could be the backlights are bad as I say unlike CRT sets where everything was checkable on flat panel its mainly an eleimination exercise some checks are made but in the main elimination done by gained experience, the backligyts are in arrays so it could be there is an array bad, the only way to prove that is by taking the panel apart and examining them not recommended
I still have a doubt however about your mainboards
I would bet its the mainboard and the ones you got from ebay are bad this is not unusual I have hed incidences of this before