INSIGNIA NS-LCD52HD-09 Blinking light

[CraigR]

I have a INSIGNIA NS-LCD52HD-09 with the little light in front just blinks and TV never does anything. Just a steady blink and no like it's giving a code. On the power board I have 350volt at the 2 large caps but over on the connector for the 24v I get a fluctuation between 18-23volts continues and for the 5volt I get a fluctuation between 0.2-1.0volts and for the 12 volt I get 2.4 an OL rapidly. All the caps look ok also. Ideas??

[CraigR]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

Anybody???

[newtothis]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

On the connector from PSU to Main can you list the pin names next to them and the voltage you read at each

[budm]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

Pictures of the power supply board connectors so we can see the labels for each pin.

[CraigR]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

readings are above post

[budm]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

OK, we need to get the 5VDC STANDBY Voltage to be stable first.
Check the capacitance and the ESR of the startup-running cap as shown in red circle.
If you do not have the cap checker then try heating that cap with hair dryer for a few minutes then plug the TV into the outlet and see if the 5VDC will become stable at 5VDC or just replace the cap.

[CraigR]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

Pulled cap out and is ESR 0.10 and cap 99.44 and cap is rated 100uF @ 50Volt

[budm]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

The filter caps for the 5V are also OK too?
Try running the power supply board by itself to see if you do have steady 5V, if it is then use 47 Ohms 1W resistor to simulate about 100mA of current draw to see if it is stable, it is, then add another 47 Ohms in parallel to see if it can handle 200mA.

[CraigR]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

That was the only cap I pulled and checked. I do have a steady voltage now of 4.995volts. But I'm unclear where you want me to hook up this resistor.

[budm]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

Between the 5V pin and the GND pin of the power supply board, no cables to the main board, we simulating the the load for the 5V power supply section.

[CraigR]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

Well I got a different power board and it still does the same thing so I'm guessing it's the main board. I unplugged the connector for both inverter boards and get the same fluctuating readings.

[CraigR]

Re: INSIGNIA NS-LCD52HD-09 Blinking light

UPDATE: It was in fact a main board however after it turned on I found the screen broken.