The loud pop and the picture going out is usually due to either failed buffer boards or sustain boards. The first thing to do would be to examine the sustain boards for any visually identifiable damage.Have a look at the boards titled X-main and Y-main and see if you can notice any charring or anything of that sort, especially near the fuses. If nothing then let me know and I will give you instructions for testing the pico fuses.
Ok nor problem. You're welcome :)
Take the entire back off.
The sustain boards are what we are looking for. You found the z-sus , on the other side there will be another one x-sus. Have a look at that one too. If nothing then carefully unscrew the boards without touching any capacitors turn the board over and look near the solder joints for any broWn residue which means a short. If nothing then we can be sure that it's not the sustain board but the buffers. Let me know your observations and I will tell you how to proced
Actually I am on IST :) Indian Standard Time!
Look for locks. There are locks that hold the board to the chassis. If you can get me a picture, I can locate and mark it for you. As for the other board, get me a picture of that as well.
Click on the view more comments button!
No I did not dump you! Please scroll down and click on the view more comments button!
Ok sure thing.
You can upload them to imageshack,us and get me the link. Also I am down with a terrible stomach upset, if you don't mind can I get back to you tomorrow?
Thanks I will have a look as soon as I can hopefully by morning.
This is one of the sustain boards
http://imageshack.us/photo/my-images/59/...
I can't find the other one so if you can just get me a good high res image of the entire back of the tv that would be great! Also the images are very blurry and cannot locate locks. However I did notice that the ribbon connectors are still connected in the image above.
Got nothing. Can you please get me the link to the images?
Ok I see bith of the sustain boards. One is on the right and the other one is next to the long slender board on extreme left
The ribbon connectors are a bit tricky as you can see. There is clamp kind of thing that holds the connector in place. Look close and try lifing the clamp up . Once you do the cable will slide out.
Heatsinks are part of the board and they do not come off seperately. If its not coming off look for hidden screws tha may be covered by tiny stickers. Now that you know where the sustain boards are please get me high res images of each board and I will see if there are any locks.
No locks but I could clearly see 3 connectors that you have not removed! Come on I told you how to remove the ribbon cables?
Yes that looks clean. It means that you have faulty buffer boards. Unfortunately for testing the buffers waveforms have to generated and analyzed for peak voltage and you are gonna need an oscilloscope for that. If you do not have one I recommend replacing the buffers. Should cost you about 125-150$. Is that OK?
The buffers are the long slender boards located near the sustain boards. If you can get me the part numbers off them, I can find you the replacements
×
340 views
Usually answered in minutes!
I won't be able to check the back of the set until I get home this evening. Will contact you then. Thanks for the help so far.
OK, home again. The back of the set comes off, or just the rectangular area towards the bottom of the set? Take off the whole back, i.e., the complete thing?
Back is now off. Where are the boards that I should be looking for?
Zsus on right side of TV-looks good, no charring at all. Can not find anything that even remotely says X-main or Y-main. None of the boards look to have any charring, actually.
Zsus on right side of TV looks good, no charring at all. Can not find anything that even remotely says X-main or Y-main. None of the boards look to have any charring, actually.
Will do. You are obviously on EST.
Ok, unscrewed the Zsus, but it will not pull up-seems as though there is something still holding it down, but there are no more screws to take out.
On the other side, the only board with is much larger than the Zsus, and it is the only board that has fuses on it. Unmarked in any way. Is that the board?
your answer did not come through
What happened? Are you dumping me?
Did not see the comments section. OK, will work on the boards and get back to you. Thanks
Pics are now in a file on my desktop, but I do not know how to post them here.
http://img707.imageshack.us/g/060vo.jpg/
Not a problem. I am not really skilled in TV's, so I appreciate your patience.
Will do. I used my phone. Will use a digital camera.
if you go back to the ImageShack link, I have uploaded new pics.
http://img707.imageshack.us/g/060vo.jpg/
Sorry, try this:
http://img84.imageshack.us/g/102sk.jpg/
I am on it. How do I disconnect the locks and the ribbon connectors. I am not very toolsy.
Wife ready to leave me for someone with a working television!
I haven't even gotten to the clamps yet-I am still trying to figure out why both boards are seemingly held down below what looks like the long, silver heat sinks. And the board on the left side has two long-ish black connectors in to the other board. How do those come out.
http://img860.imageshack.us/g/082v.jpg/
Ok, Y-sus is out. No charring. Back of board is completely clean. Working on clamps for connector ribbon. Thanks
SUCCESS!!
http://img717.imageshack.us/g/002biu.jpg...
Where do I find the buffer boards, and where do I get replacements?
There is one on the left hand side of the back, none on the right. Long slim board across the bottom that stretches the width of the TV. The part # (s) for the one on the left is:
6871QDH917A
YDRVTP
PD4206310 19014
Does that help?
Hi-
I sent you the part numbers last week, but I have not heard back from you. what's up?
×