When the screen is first powered on, it shows a picture for about a second and goes out. There is still sound, and if you shine a light on it, you can see the image... I decided to treat this like a 2 seconds to black issue, despite the fact that it's definitely shorter than 2 seconds... That said, I started with the power supply...
The P/S P/N is DTV207.
My opinion is that the p/s is shot. (See Attached Pics.)
First, there is a chip on the bottom of the board that looks kinda melty to me. There is also, solder bridging a total of 5 of the 8 pins on the same chip. In addition, I think some of the other solder joints show poor workmanship.
On the top side of the board, there are 2 heat sinks... One of which shocked me. (Power was connected because I was testing the output voltages.) As far as I know, a heat sink shouldn't be able to shock anything. After my shocking experience, I tested the voltage coming off of the heatsink, and it's putting out 77 VDC. In addition to that, the ground screw was the hot side and the heat sink was the ground. (according to my digital multimeter. See Pic.) The heat sink that shocked me has only 1 transistor attached to it. the other heat sink has 2, but didn't shock me & wasn't putting out any voltage.
Questions? Comments? Please feel free... If anything here is normal and I'm overreacting, please let me know...
The P/S P/N is DTV207.
My opinion is that the p/s is shot. (See Attached Pics.)
First, there is a chip on the bottom of the board that looks kinda melty to me. There is also, solder bridging a total of 5 of the 8 pins on the same chip. In addition, I think some of the other solder joints show poor workmanship.
On the top side of the board, there are 2 heat sinks... One of which shocked me. (Power was connected because I was testing the output voltages.) As far as I know, a heat sink shouldn't be able to shock anything. After my shocking experience, I tested the voltage coming off of the heatsink, and it's putting out 77 VDC. In addition to that, the ground screw was the hot side and the heat sink was the ground. (according to my digital multimeter. See Pic.) The heat sink that shocked me has only 1 transistor attached to it. the other heat sink has 2, but didn't shock me & wasn't putting out any voltage.
Questions? Comments? Please feel free... If anything here is normal and I'm overreacting, please let me know...
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