Hello, I have tried to trouble shoot and have thrown some parts at it, but I am not having any luck. I have a Hitachi, model LE40K507, LCD tv. The discrepancy is: TV is plugged in, and nothing. No standby light on the front, no response from power button, nothing. I have changed both a power supply board and the main board. (I have not yet changed the digital board, aka PC board unit) I open it up and measure the voltages from the power supply board while plugged in. They are as follows:
ON/OFF - 0.06 VDC
ADJ - 4.95 VDC
GND - N/A (No pin)
12V - 12.19 VDC
12V - 12.19 VDC
GND - 0
GND - 0
5V - 5.2 VDC
5V - 5.2 VDC
GND - 0
GND - 0
STBY - 4.86 VDC
5VSB - 5.2 VDC
These number almost look good to me and I would think I should be getting at least a standby light or something. I get nothing. Please help with any advice or anything else for me to check. Thanks in advance!
ON/OFF - 0.06 VDC
ADJ - 4.95 VDC
GND - N/A (No pin)
12V - 12.19 VDC
12V - 12.19 VDC
GND - 0
GND - 0
5V - 5.2 VDC
5V - 5.2 VDC
GND - 0
GND - 0
STBY - 4.86 VDC
5VSB - 5.2 VDC
These number almost look good to me and I would think I should be getting at least a standby light or something. I get nothing. Please help with any advice or anything else for me to check. Thanks in advance!
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