Have TV Questions? Ask a TV Technician
Hi , I`m JackPerhaps I can help you with this problem but first a few questions
What do you mean by the "hold down sequence" ?
How did you do that exactly ?
O.k then I`m not surprised , must be for some other tv brand .
There is a procedure that may look somewhat like that one and that is sharp
If you want to try it perhaps ??
I even got 2 procedures you could try before we get the axe and start chopping :)
Unplug the power cord and while holding down volume down and INPUT directly on the tv , plug in the power cord .
Tell me if the tv comes on in service mode with the letter K on the screen ?
Or this one that can be useful when troubleshooting backlighting problems , it the FORCE procedure ,it bypass the TV's shutdown circuit ;
Same thing as above but this time while pressing the vol+ and channel down buttons , again directly on the tv , not the remote
o.k and how about the second procedure I gave you ?
When you saw that K , the picture still went away , is that correct ?
o.k just the picture that still disappears ?
When you say it blinks steadily , is that the power light , opc light or both ?
Unplug the power cord again and start it normal so that the problem comes back and tell me about the lights
Do they have some pattern like for example 2 power light blinks and 3 opc light blinks and then repeat ?
Or is it just a steady blink , no pattern or pause ?
O.k then usually these TV's are pretty good at giving out error codes stored on the main board by the system processor and it does come in handy , especially in a situation like this now , that would allow me to point you in the direction of the problem if not the problem itself.
There is one thing that is assumed when there is no error code and that usually is the main board itself , if it is defective then it cannot diagnose its own brain if you will .
Right now from where I`m sitting this would be the best lead I could give you and also the service manual if you are interested ?
For the brief moments that you can see the picture , does it appear normal or darker in some area ?
That is the one with the input connectors , in the center would be the power board
Let me check the prices and availability on this ?
By the way the main board has the HDMI and vga inputs on it , the other one with the other inputs is the terminal board
By the look of it there are quite a few version of that board for your model , take a look at the link below and see if you can identify your board with one of those by part number and note that this link is for ID purpose on it , they are not n stock there .
You can click on the pictures to get more details.
Also looks like that board won`t be cheap by what I can see there , that supplier is one of the reasonable one when it comes to prices
Take your time I have to step out for a while anyway and once you have found your board let me know and I`ll see about finding it.
Yes thank you , same to you and your family .
As I said , take your time , this can be later or even tomorrow , doesn`t matter if it is in 6 months , this post doesn`t close even after rating.
If that answers your questions for now please do not forget to rate by clicking on the star icons at the top, then click on Submit so i get paid for my time helping you .
Thank you and let me know that board number
I`m sending this to you right now
Your main board part number is ***** and here is a link where you can get it ;
manual coming up
got problems uploading that manual but here it is ;
By the way , if that link opens a login window popup then just close it with the upper corner X or the "no thanks . continue to view"The manual is behind that and you can use the download button.
If you don`t have any more questions for now then please do take the time to rate my answer by clicking on the star icons at the top, then click on Submit , this is how I make a living and that rating gets me paid for my time.
Hello , was out by the time you replied last night .
Without a blink code and without being there myself with tools and meters I can only take an educated guess but yes I will be here after at any time (as I specified above) if you need help with this.
Looking back at this post I did miss one question and here is a drawing to show you how that connector works , click the link below; https://www.dropbox.com/s/7ux4p6ye42yo51o/2015-12-26_0843.png?dl=0
By the way , if that link opens a login window popup then just close it with the upper corner X or the "no thanks . continue to view"The picture is behind that .
By the way , wait for the new board before pulling anything out , this is best done all in one shot
O.k then let me know if you need help when it comes in
O.k then sorry but without being there with tools and meters this is as far as I can go so I will opt out
You don`t have to do anything , your question will be reposted for other techs. to see and jump in.DO NOT rate or it will hinder the repost .
Hello my name is***** do not rate until we are finished. I look forward to assisting and am very sorry to hear that you are having this problem. Do you have a multi meter you can test the boards with?
First please test the power supply board here is a video explaining how:
After that I suggest testing the inverter following this video:
Let me know the results when you can.
The video is just an example, it will look different but the steps would be the same. If you are still unsure you can test the caps etc instead. The voltage for them will be written on the caps themselves and you would test from the solder points on the under side of the board.
Ok to start please test the blue caps from the under side of the board. They will have the voltage written on them. They are most likely all the same kind. One or two bad caps can cause issues like this. They can also be bad/blown while looking fine. They do not always blow and cause scorch marks.
The one you connect and have no picture you will want to test the caps on the way I gave you before.
From what you told me before about the inverter boards the power board sounds ok. However you still need to test the caps themselves on the board you get no display from like I said before. If you do not want to do this you can try replacing that entire board. Testing the ribbon cable connections unfortunately will not help. If you do not want to do either of these at all that is ok too, just let me know so I can opt out the same way Jack did before and open this to all experts for you.