Hi there,
This forum is an excellent place to start exploring and learning …
After reading and more reading I decided to go ahead and ask for your help:
So I tried to troubleshoot a (like-new) 24 inch LED-LCD Insignia tv with power problems: plug-in, the standby indicator was blinking red and stay red and sometimes goes off when try to power on.
Open the cabinet and inspected the power supply board and capacitors for bulging or leaking, nothing suspicious, measured voltage as follow:
BON=0V, PWM=0V, STB=5V, 5V-1=0V, PON=0V, 7V=0V, 12V=12.4V so the output voltage looks ok.
Did reset it (unplug for more than 10min, press and hold power button from tv for 1 min and plug-in again) and surprising the tv power up and ask for initial set-up.
But after few minutes, no standby indicator light, completely dead unit…try to reset, same results.
Open again, plug-in and re-measured the voltages:
BON=0V, PWM=0V, STB=5V, 5V-1=5V, PON=5V, 7V=0V, 12V= 12.4V so looks like something is on, but no standby indicator red/blue, no image or sound. Checked for jammed side buttons - nothing wrong.
Disconnected the mainboard from the power supply and measured again I got same voltage reading like first time: STB=5V, 12V= 12.4V (other outputs 0V).
At this point I am lost and your help will be appreciated.
Thanks!
This forum is an excellent place to start exploring and learning …
After reading and more reading I decided to go ahead and ask for your help:
So I tried to troubleshoot a (like-new) 24 inch LED-LCD Insignia tv with power problems: plug-in, the standby indicator was blinking red and stay red and sometimes goes off when try to power on.
Open the cabinet and inspected the power supply board and capacitors for bulging or leaking, nothing suspicious, measured voltage as follow:
BON=0V, PWM=0V, STB=5V, 5V-1=0V, PON=0V, 7V=0V, 12V=12.4V so the output voltage looks ok.
Did reset it (unplug for more than 10min, press and hold power button from tv for 1 min and plug-in again) and surprising the tv power up and ask for initial set-up.
But after few minutes, no standby indicator light, completely dead unit…try to reset, same results.
Open again, plug-in and re-measured the voltages:
BON=0V, PWM=0V, STB=5V, 5V-1=5V, PON=5V, 7V=0V, 12V= 12.4V so looks like something is on, but no standby indicator red/blue, no image or sound. Checked for jammed side buttons - nothing wrong.
Disconnected the mainboard from the power supply and measured again I got same voltage reading like first time: STB=5V, 12V= 12.4V (other outputs 0V).
At this point I am lost and your help will be appreciated.
Thanks!
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