![]() ![]() I checked the connector on the mainboard to verify that the signal was coming from the mainboard and not the IR board, and it was. In the photo above I am checking the voltage on the backlight DIM line with my amazing Brymen BM869s DMM and noticed that there is a 1.580V AC signal on it. The TV is six years old, so it’s a good idea to freshen up the thermal compound. I also did the same with the Bridge Rectifier, which you can see in the next photo. I removed them to put some fresh thermal compound on them. I would call it the LCD case.Ībove are the Schottky Barrier Diodes and N-Channel Enhancement-Mode QFET/MOSFET’s. I’m not sure why Sanyo calls it a LCD module. The LED driver board must be inside the LCD module. The T-Con is integrated into the Zoran ZR748 SupraHD SoC, on the mainboard. Here are some photos showing the IR board and Mainboard. The TV is not shutting down so I would imagine that there are no short circuits. So the first thing I did after checking the screen and taking the back off of the TV was to look the boards over good, and start checking voltages. I went to turn on my vacuum cleaner to vacuum the dust off of the TV and my vacuum cleaner quit and tripped the breaker, as I mentioned in the previous article on my Hakko FX-888D soldering iron repair. I was watching my Sanyo DP40142 LED/LCD 40” TV the other day, and the screen just went black! I got my flashlight and checked the screen to see if the panel also went out, but it was still working, praise The Lord! So I knew that the problem was just affecting the backlight.
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