Re: Sharp LC-46D62U Static Dots and Lines on Screen
Doing one more oven reflow.
Doing one more oven reflow.
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
No bueno!
Think maybe the t-con is the culprit? The rest patterns are clean but there is no indication on what they mean if they pass.Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
Guess there is always a chance.Did I leave the soldering iron on?Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
I baked this sucker hot, t-cons are cheap I might try one and see. But WHY sharp do have to make so many damn heat shields! T-con is buried!Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
I agree. Now they make crap flimsy and cheap. Back then their panels were built like Sherman tanks!Did I leave the soldering iron on?Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
I wonder if the mainboard metal cover is needed, seems to be more of a heat trap then anything.
Freak, got any extra mainboards? Lol, so I see shop jimmy has a ton of mainboards listed for this unit, do I have to match the exact one I have? Mine is triangle 2 WE01, so a revision 1,3 or 4 wouldn't work?Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
I have a mainboard with that ic pulled. I had another with a cracked screen but it was a 42 inch version. Had that same issue but works after my fix.
I used the 42 inch board I the 46 w no problems.Did I leave the soldering iron on?Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
And no. Ditch the metal covers. I did
Actually I have a mainboard from a lc-46d82u. Not sure 9f the interchange for that. But you could get away with a board from a 42 or 52 also.Last edited by freakaftr8; 11-26-2014, 12:03 AM.Did I leave the soldering iron on?Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
Yeah, not sure what damage if any I did Reflowing this board. 130+ on a 2006 TV mainboard for a TV that I got for 4.99 that will probably not end up selling for much.
I want to save it as cheap as possible
The 82u has an extra HDMI port and the t-cons look totally different.Last edited by Shinju; 11-26-2014, 12:32 AM.Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
I found a sharp lc-40c37u 3 seconds to black, looking at the mainboard via shopjimmy they look pretty identical minus the giant heatsink.
Think the board will work in the 46"?Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
Hi2u!
Turkey coma!Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
My guess is no, the 46" is 1080p and the 40" is 720p.
Ugh, I dunno... Maybe I will spray it with windex and hope for the best!Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
do you still have the same picture as you did before after reflowing the mainboard? I'm pretty sure the mainboards fine those suckers getting mighty hot in operation anyway.
hopefully you get it figured out I've done two of those d62u models and one D82 model. all three required reflowing that IC on the main board but I guess it could always be something else as well even though the symptom was identical yours is doing.Did I leave the soldering iron on?Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
Yeah, same symptom. I was hoping this other sharp I got would be a parts pig for the 46"Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
New old stock t-con installed, issue still there.
Definatly 100% mainboard!Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
when I did my main board I didn't use the oven reflow I used my hot air station and I just heated that s*** outta that chip. took two or three tries but I got it rightDid I leave the soldering iron on?Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
I need to get a new heat gun, I will try it again and report back.
I got another sharp TV doing some strange stuff, need to figure that sucker out too!Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
The item I was working with was an LC-46D82U. Same problem, fine blue dots across the screen in random patterns. I have just now completed a re-flow process on IC 3502. I used my heart gun and no clean solder paste to heat the IC. I am presently bench testing the item before return to my customer.
Thanks for the informative post.Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
Thank you for the post and solution. I did try my LC46D82U. I used the heat gun. Now it almost fixes the issue. Sometimes it comes back for no reason...Comment
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Re: Sharp LC-46D62U Static Dots and Lines on Screen
[QUOTE=jotvguy;596823]The item I was working with was an LC-46D82U. Same problem, fine blue dots across the screen in random patterns. I have just now completed a re-flow process on IC 3502. I used my heart gun and no clean solder paste to heat the IC. I am presently bench testing the item before return to my customer.
How did it turn out on the reflow? Did screen look like this as the issue you were working on?Attached Filesif you find these attachements useful please consider making a small donation to the site
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Wondering if anyone has addressed an issue with the SHARP 70” LC-70UD27U having thin black and white lines running from left to right horizontally on the screen. I snagged this TV set from a neighbor since I have been successful in repairing numerous other TVs. I assume this probably happens to other TV sets and may have been addressed in another thread. If so please point me in the right direction.
What I have tried so far.
I have tested all HDMI inputs with the same results.
I have checked for firmware updates.
I have reset to factory settings.
I have removed... -
All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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Hey everyone, I have a Sony Xbox-65x900e with static lines. I’m assuming either the panel or t-con. Any suggestions before I start diagnosing? Service manual says T-con, panel, or B* Board (which I have no idea what that is)... -
This is only my seond post and so far i am very impressed with the forums.
I have a Sharp 50bj2ke which is 6 month out of gaurantee and has devoloped horizontal lines, i have tried to research as much as possible but i am no further is diagnosing the issue. When i turn the tv on it works good with only a thin line right at the top of the screen which i could live with but after a couple hours of use the lines start to appear in the middle of the screen and now the bottom.
The small white box thing in the pics is not the tv its a reflection from the window
Any suggestions... -
Hello, I have a screen in where sometimes when I open it pop-up vertical multicolor lines (I would say the most of them are green). If I tun off and turn on the screen the lines dissapear or if I leave open the screen after approximately five minutes the lines gone. I measured the below voltages on the main PCB and on the T-CON board and the voltages are the same when it doesn’t display the vertical lines and when it displays the vertical lines. Also, I cleaned all the connectors very good with IPA. I moved back and forth the connectors and the COF tabs but the vertical lines didn't displayed...
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