So i just repaired this tv by removing the side tabs. Picture came on perfect. Didnt have it on long, as I started to hear a buzzing noise that wasnt there be for the repair. I didnt see any bulging caps or burn marks anywhere.
Sharp Lc-70le755 Buzzing
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by RozpHello Everyone,
This is my first post so I will try to be as precise as possible without making this post too long winded. Unfortunately I don't have pictures of the original problem but I included images of the TV internals.
I have a Sharp 70LE660U. The problem started a few months ago with the bottom row looking out of sync and was dark on the left side and then fading to transparent on the right side. Shortly after, a dark cloud appeared in the center of the screen. The dark cloud started small and shaded but the image was visible. It also affected the menu area.... -
by rblack711Relatively new to TV repair - as you will see. Rescued this TV from the curb. No backlights, but I could see an image on LCD with flashlight, so suspected bad LED strips. When I got to the part of lifting the LCD off the frame, it was stuck a little bit from some tape used to hold down a thin layer of foam around the frame. I saw 8 tabs on each side of the LCD that I haven't seen on any of the 3 TVs that I have taken apart before. I immediately thought, wow the engineers that designed this were thinking about the serviceman when they put these lift tabs on here - good for them. So I started yanking...
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by dcbwThe PSU works, but shortly after powering on (either in the G5, or by shorting the power-on pin to ground) it begins buzzing loudly. It also makes the LED lights connected to the same circuit flicker. It's definitely a buzzing, not a high pitched whine.
The buzzing seems to come from the high voltage side of the board, perhaps from the white relay. Could the relay be bad, or could the 5V supply be bad enough that it's unable to keep the relay on? Any pointers to help isolate the issue? Thanks!
Other info: API2FS34, ID 291, Date B040405-31-2024, 07:13 AM -
by advantThis thread is about trying to get an Universal Main Board to work with a Sharp TCON and panel.
I have a Sharp LC-46D85UN TV that has had a main board issue. Since this model is from 2009, I am not able to find an exact replacement of the main board. Instead, I decided to see if I can future proof this tv by getting a Universal Main Board (T53U21.2) from China to work with the Sharp TCON (CPWBX4291TPZA) and panel. The universal main board supports a 8 bit dual channel LVDS interface whereas the TCON requires a 10 bit dual channel LVDS input. I have modded the LVDS connector to match... -
by sefosterI have a Sharp Aquos LC-80LE757U that randomly made a loud popping noise when when watching TV one day. We found that the fuse blew and the thermistor. We ended up replacing the entire power supply board and have also replaced the TCON board. Now as soon as I plug the TV in it lights up and has the Sharp logo flashing on and off of the screen. If I unplug the ribbon cable from the TCON board to the main board I get the 2 long 5 short error code. Any ideas on where to go from here? We've tried resetting it but nothing has worked. If we plug it in and let it cycle through the flashing of the Sharp...
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