I believe this is my model television, however, I am at work and unable to verify that! By the look of it, it looks just like the one that I have. This is the problem. I unplugged the TV to plug in a lamp, etc......and when I plugged it back in, it has had the following problem: The screen shows the picture, but with no sound, then suddenly, the screen is completely black and there is sound. However, I can't get both to work at the same time? I have tried EVERYTHING and it just keeps doing the exact same thing! Please let me know if there is anything that you could do to help me! Thank you! Jane
Televison & Video - TruTech - PLV16320 Television
Answers & Comments
Hello,
IF the backlights are on but you just get dim glowing on the screen when look at the screen in darkened room then the T-CON board is bad or it is not getting the 12vdc from the main logic board. Need to use logical troubleshooting before buying the wrong parts.
ALSO NOTE THAT
The power supply has Standby 5vdc (5VSB, this is a MUST have before anything else will work, when this voltage is not present, there will be no any indicator light on the front panel) which is always on the minute the TV is plugged into the AC outlet, so it is on 24/7 and that is why the power supply will fail even though you may use the a TV not very often. It will see all the voltage spikes and surges 24/7.
This 5vdc is used to power the Processor and the Infrared remote receiver module which will be waiting for the command from the remote control or from the power switch, when the Power on command is received, the Processor will send the turn on signal (3.3~5vdc) to the power supply module (PSON pin) to the switch on the main 5vdc for the rest of the logic and Tuner circuits, 12~16vdc for the sound amplifiers (mostly Class D amplifier for efficiency and small size) and for the T-CON board (interface board between the LCD panel and the Logic board), and 24vdc for the Back lights inverter board (if there is no 24vdc then no back light).
Common failures:
Blown main AC fuse due to shorted out Diodes, transistors.
Bad capacitors leaking or bulging tops:
Shorted Diodes, transistors in the DC output side.
Hope this helpout
Are you suggesting that I take it to a place where they fix televisions?
Hello,
If you have knowledge on electronics you can fix this by checking on the component listed below
but if otherwise you can call a skilled perssonel to handle it.
Blown main AC
fuse due to shorted out Diodes, transistors.
Bad capacitors leaking
or bulging tops:
Shorted
Diodes, transistors in the DC output side.
Good luck , thanks for your comments