Re: Vizio E421VA - no picture
Someone has scatched an "X" on top of two canned capacitors on the upper right of the image. Has this TV been to a service center or has anyone else tried to fix it? Just curious
EDIT: Sorry I didn't realize the age of this post.
Olympus620
Member
Last Activity: 01-18-2016, 11:01 AM
Joined: 11-10-2015
Location: Salem, Alabama
-
Last edited by Olympus620; 11-18-2015, 03:12 PM. -
Re: Sharp AQUOS 70" LCD model LC-70LE550U
Ok I threw caution to the wind and removed the 2 boards. The first image is with the bottom only ribbon cable removed as we were discussing. The upper part of the screen remained distorted.
Second picture is with the second ribbon cable removed.
At that point I could see a pattern and just removed the remaining ribbon cables and these two images are the end result.
I think we have a winner folks. Thanks for all your help Bud and freak
I am curious...Last edited by Olympus620; 11-15-2015, 03:00 PM.Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
Sounds good, I have not looked to see how the flexible ribbon cable(with driver) attaches to the display so I am unsure where I should "peel" away the ribbon cable. Do I peel the flex cable away at the green board or below the driver nearer to the display? In this picture I am asking above or below the driver?...Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
haha That might be a bit much for my skills....Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
It is slightly darker then the other chips. Not only that it will burn my fingers if I touch it. The other 3 chips on that side are cold to the touch....Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
Adding another image I should have added earlier. This was taken with just the right side corner(viewed from back) white ribbon cable removed. The horizontal band was not there yesterday when I was looking at the menu. As a side note the first driver ic is directly in line with the horizontal lines. I don't know if that means anything or not. FYI, I am still deciding whether or not I will be pulling the driver boards off....Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
Good info Budwich, Thank you! I had thought it was a burned out driver component on the side boards that needed to be replaced and reflowed back in place. As one option I was thinking since my sister in law works at an electronics manufacturing facility in Florida and she has bonding and flow equipment everywhere I could just send her the entire tv but in reality that is out of the question.
...
Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
No, I haven't committed yet to removing the boards. If I do this it's going into my living room which poses problems with space. Just looking for a way around it if there is one. I am in no rush at the moment with the TV being in the shed out back. I will update with detailed pictures if that route is taken. I have also been searching craigslist hoping for another broken compatible Sharp model. I wish I knew the model numbers of the VIZIO's using this identical display.
Thank you!...Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
Freakaftr8 I want to thank you for helping to solve what is wrong with this tv(side drivers). I was hoping you could help me further to understand the technology and why the side boards cannot be replaced instead of just removed. I purchased this tv with the intent of reselling it after a repair but I am hesitant about reselling it with missing parts. I know I could inform the buyer and sell it with a large discount but I would like to get the most out of it. Is this un repairable because the side boards are not available...Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
Are you meaning I need to remove and replace the right side board? That should get it back to like new if all else is good right? Any idea on where to find a replacement board?
Thank you again!
EDIT: I went back and read your post regarding this fix and I see now why it is permanent. This is unlike an LED panel where the strips are removable and can be replaced. Once removed they cannot be replaced. I see it now.
I do still wonder how good of a picture I will have when this fix is complete? Is it...Last edited by Olympus620; 11-11-2015, 05:05 PM.Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
Thank you so much. It sounds difficult!...Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
Is the majority of the voltage/current being drawn from the LED's on the long green boards or does this TV not have LED's? I am asking because I would think replacing the green strips might fix the problem?...Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
I do:
This is with all cables connected except the right\bottom mini cable connecting the green boards together. This is the cable Freakaftr8 suggested be removed as in post #11. The image is a little dark and hard to read the menu but I now have backlights and an image on the right side as well.
...
Last edited by Olympus620; 11-11-2015, 04:29 PM.Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
I will be working on those other suggestions this afternoon but before that I was hoping you might have an idea on how to test for an error code or error voltage. I have seen a pin labeled error on a cable that goes from the main board to the PS. Would you by chance know the default voltage I should see on that pin? If the panel is drawing too much current it may be "shutting" everything down as you said.
I also need to clarify something I said earlier about when the left side ribbon cable is...Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
That is my concern, half the screen does not work under normal conditions. Without removing the T-CON ribbon cables the backlights and the panel image(verified with a flashlight) does not come on. I think Sharp might have a feedback circuit turning the TV off for some reason to protect the T-CON or PS. I have much more to learn but your threads regarding these strips are getting me closer to making a decision or two....Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
Very interesting. I need to do some reading on this but it sure sounds like my problem. I don't like that the repair is irreversible so maybe it is a "last resort". If you were me would you try any other measures first? replace the T-CON board, main or PS? I don't mind throwing another Benjamin at it if I thought it had a chance of fixing it....Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
I just took a look at it and the panel is surrounded by 4 thin green boards that have several cables attached per board from the front of the panel. Are these the boards you are referring to?Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
I don't have access to it at night. It is to big to work on inside my home so I have placed it inside a 10x12 shed in my backyard. I will see if those boards exist in the morning. Do I need to remove any more parts to see them or should they be easily seen?Leave a comment:
-
Re: Sharp AQUOS 70" LCD model LC-70LE550U
When the ribbon cable on the left side(viewing from back) is removed the backlight comes on and it has a good picture on the left(as viewed from the front side). The right side as viewed from the front only has the backlights and dark or black image. I don't know about other Sharps but this menu begins on the left side. I hope it is familiar enough to figure out. thanks for looking
These are the 4 cables I am referring to....Last edited by Olympus620; 11-10-2015, 11:43 PM.Leave a comment:
No activity results to display
Leave a comment: