Re: Sharp LC-60LE752E Panel shorted?
Alright guys, I'm going to update you.
I disassembled the frame and when verifying the side COF Chip none shows a noticeable heating, but when assembling the frame it fails after a few minutes. This makes me think that when the TV has the metal frames (which hold the panel) and also the plastic frame (where the TV brand comes out). As there is no ventilation, the COF Chip collapses and shows the fault.
It was a risky move on my part, but since many had reported simply removing the side COFs that present the issue, I...
skynetronics
Member
Last Activity: 09-27-2024, 08:30 PM
Joined: 03-06-2016
Location: Santiago
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Last edited by skynetronics; 03-06-2023, 10:54 AM. -
Re: Sharp LC-60LE752E Panel shorted?
Thanks, mate. I will follow the recommendation and before applying surgery I will try to disassemble the frame and touch the side COFs to see if any have suspicious marks or if they get hotter than normal.
In any case, I will attach photos in this way tomorrow ASAP.
Thanks in advance....Leave a comment:
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Re: Sharp LC-60LE752E Panel shorted?
Sorry if is a dumb question, but just to confirm, you mean to remove the tabs on the right side (viewing from the front), just like @mkkillah did on the #15 post? My panel is exactly the same of him.
Yup. I read that thread, very interesting indeed. But in that situations, the panel of 70'' is different from 60''. Although a user reports in that same thread that the same logic can be done for 60'' cases and that obviously in any case it is not reversible. Maybe I have no choice but to take the risk....Leave a comment:
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Re: Sharp LC-60LE752E Panel shorted?
Hi guys,
I am writing to you from Chile. I have a problem similar to the one in the topic on a Sony KDL-60R555A. The original problem was that it turned on with the backlight, it had sound, but no image.
Reviewing the T-CON I realized that the famous "COXA" MOSFET [URL="https://www.badcaps.net/forum/showthread.php?t=49281"]that was discussed in other topics[/URL] was shorted between Drain and Source. I replaced it with a Si2308BDS (MOSFET 60V x 2.3A) which far exceeds the characteristics of the...Leave a comment:
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Re: 50t32-soc xl bd short
Hey mate, what you did to solve the problem?
I have the same R075 (100 ohm) open. The other components seems normal (transistors, capacitors, etc).
PS: I'm from Chile and the problem is in an AOC, model LE50U7970, same panel with the same symptoms....Last edited by skynetronics; 10-23-2021, 08:15 PM.Leave a comment:
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Re: component identification
I update this thread to inform in reference at post #25 that DP801CS was an ultra-fast diode U5A6CD just like R_J said.
Thanks, dude.Leave a comment:
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Re: component identification
Thanks, matey.
That reference is useful.
If someone else have some clues about this, i'll very grateful.Leave a comment:
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Re: component identification
Guys, i write from Chile. Gimme a hand here, please.
I have a Samsung PSU BN44-00772A and a "technician" (i guess) tried previously to repair it.
The PSU has a diode removed from it, that is located on position DP801CS. The fuse and MOSFET blown too, but that's on place.
I just have the PSU on my hands, so i can't upload photo of the unit or the other boards.
If someone has this PSU, i'll really appreciate if can write me here what part is that diode.
Sorry for my bad...Leave a comment:
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Re: Samsung UE46F5300 BN41-00611D
Awesome and cheap fix, Dannyx. Congrats, mate.Leave a comment:
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Re: Sharp LC-32S7E dead power supply (no STBY).
Yes, on the functional replacement board i remember that have continuity on that chopper (on 1-2, and 1-3)....Leave a comment:
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Re: Sharp LC-32S7E dead power supply (no STBY).
Yep, i remember the measurement. I had no continuity between 1-2, but between 1-3, was ok (on bad transformer). On the good one, i remember that have continuity between 1-2, and 1-3....Last edited by skynetronics; 06-10-2017, 10:22 AM.Leave a comment:
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Re: Sharp LC-32S7E dead power supply (no STBY).
Hi Dannyx, first post here.
First of all, forgive my bad english to the forum. I wish to add that this power supplies have much fails on this transformers.
In my experience i had a 715T3150-3 from a Sharp LC-42SB45UT with similar failed components (TNY277PN) and the stand-by chopper transformer T904, P/N: 060TL42T916L.
Symptom: Dead supply, even stand-by voltage. Just having 310v on the main capacitor.
Visual obs: IC903 dead (exploded as you can see).
Procedure:...Leave a comment:
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