How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Eng. Andres Your Own Question
Eng. Andres
Eng. Andres, Engineer
Category: Electronics
Satisfied Customers: 68
Experience:  Electronic Eng. Electronics Specialist. Circuit designer
54002000
Type Your Electronics Question Here...
Eng. Andres is online now

Panasonic Viera TX32LMD70. Problem: switches itself off a few

Customer Question

Panasonic Viera TX32LMD70. Problem: switches itself off a few minutes after power up. Sometimes it powers itself up again or goes into standby. No obvious visual fault (i.e. swollen capacitors) on either AV board or power board. Which is it likely to be or should I replace both?
Submitted: 3 years ago.
Category: Electronics
Expert:  Shahid replied 3 years ago.
Hello, my name is Shahid, I'll be happy to assist you.
Please allow me to ask you a few questions to diagnose the problem.

- Can you please check standby (5V or 3.3V) volts at power supply board with voltmeter?
- Does standby volt stay constant or goes low at some time when problem occurs?

Thanks.

Expert:  TV-Tech1 replied 3 years ago.

Hello, I'm TV Tech1 and I'll be working with you to identify and help you resolve your problem.

 

So your TV may just turn on and then off, but other times it turns off, then restarts?

 

Part of the situation I try to identify is if the TV turns off BEFORE the LCD panel goes from pitch black to a subtle gray light level on the TV screen. Or does it light up a little, then goes out and shuts off.

 

Your TV has a power supply, and another board called an inverter to make the TV lamps light up. I usually try to see if the inverters are at least lighting up or not.