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Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 47524
Experience:  Custom home theater installer, authorized dealer top brands.
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Huy I got a Panasonic 55 inches. When watching the picture

Customer Question

Huy I got a Panasonic 55 inches. When watching the picture disappears but the volume stays on. When I switch off then on the picture shows. But after a few minutes it disappears again.
Submitted: 17 days ago.
Category: TV
Expert:  Nathan replied 17 days ago.

Hi, I'm Nathan.
Sorry to hear that you're having trouble with this but I'll do my best to help you.

What is the complete Model Number? (you will find this info on a sticker on the back of the tv)

Customer: replied 17 days ago.
TX -55CX400B
Expert:  Nathan replied 17 days ago.

Thanks,

Expert:  Nathan replied 17 days ago.

Unfortunately, the issues you are experiencing are symptomatic of an internal hardware defect, meaning a faulty power supply or main/control board, though there are many possible failure points. This issue could be a manufacturing defect, but is also often caused by a power event (shock/surge, prolonged over/under voltage condition, etc).

This could also be the result of age related wear and tear; as a 2015 model tv, that type of failure wouldn’t be surprising. This set is at/past its service life.

There is one step you can take here, both as a possible fix, as well as a diagnostic evaluation:
1) Unplug the power cord from the outlet

2) Wait at least 1 hour (60+ Minutes)

3) Press and hold the power button (on the set, not the remote) for 60 seconds
4) Keep holding power button while plugging back in, and for another 60 seconds after. When plugging back in, go directly to the wall outlet, bypassing any power strips or surge protectors.

If this reset process does not work, it would unfortunately confirm an internal hardware failure.

This is something that would require repairs to correct; if you're thinking about a do it yourself repair, you'll need to be comfortable and skilled with electronics repairs, which could include dismantling the set (removing the back panel of the tv), diagnostics testing with a multimeter, changing out boards as needed, and possibly desoldering/removing and soldering/replacing individual components.

If you’re considering repair at a local shop, you’ll find a typical repair to be around $300 for diagnostics, parts, and labor.

For a tv of this size/age however, replacement will make more sense. You can get a brand new 4k LED tv with a fresh warranty in the $400 range.

I can help you with finding parts, finding a repair shop, or recommending replacement options, if desired.

My apologies for the news,

Nathan