|
Sony KDL-75W850C 6 red blinks - where to measure LED voltage
I am troubleshooting a Sony KDL-75W850C per the service manual. 6 red blinks indicates either bad power board or LD panel. I have checked power board and I have good 3.3v STBY, 12V, and BL_ON. . It says I need to measure the LED output voltages. I assume I measure them between OUT+ and OUT- on the board. All the other points are measured to Ground. The reason I ask is I get a brief pulse of 132V between OUT+ and OUT- then it collapses to 0. If I measure between OUT+ and Ground I get varying voltages from 0 to 200V ( I assume a cap is charging discharging).
ANSWERS:
| 