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euro-pro llc
euro-pro llc, Technician
Category: TV
Satisfied Customers: 1636
Experience:  20 years in TV repair,certified by all major brands- Sony,Samsung, LG,Toshiba, Panasonic, RCA,
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HDMI ports stopped working on 50" Panasonic 1080P Viera TV

Resolved Question:

My HDMI ports stopped working on my 50" Panasonic 1080P Viera TV, is there a way to reset them?

Already Tried:
Replaced my cable box to make sure that wasn't the problem. Hooked up the red, green blue wires instead of the HDMI cables and it works. Can I reset the ports?

Submitted: 7 years ago.
Category: TV
Expert:  euro-pro llc replied 7 years ago.


I will be happy to assist you with this question.

To reset the tv,you need to press vol minus on the tv set,until volume reaches zero,then,keep vol minus pressed and press "menu" on the remote(while aiming the remote toward the remote sensor).Keep them both pressed until you get the self diagnose screen.

Wait until you see a chart with some parameters checked OK.

Then you need to unplug the unit.

Plug it back,and turn it on.

Now you have the initial(out of the box) screen.Follow the setup,then check the HDMI inputs.

If they still do not work,then you will need to replace the "A board".

I can help you with the part#,but I need the model# ***** this!

I hope this helps,

Thank you ,and have a great day!

euro-pro llc and 5 other TV Specialists are ready to help you
Customer: replied 7 years ago.

The modle # is TH50PZ700U It's a Panasonic 50" Veira 1080p

Expert:  euro-pro llc replied 7 years ago.


Just a quick clarification.

On this model there are two version,TH50PZ700U and TH50PZ700UA.

The A board will be a different part# ***** on this version.

Please look on the side of tv,onto the backcover,there is a label where is listed the model# ***** serial#.This is a black label with white writing if the tv is "U" version and a white label with black writing if the unit is a "UA" version.

Please double check for me this version#,that I can provide you with the right part# ***** the "A board".

Thank you

Customer: replied 7 years ago.
I will. I'll get back to you.
Expert:  euro-pro llc replied 7 years ago.

Actually on this model,the A board ( as we know the main board) is split in two section,the one with the HDMI inputs on it is the so called "DG" board.

I will check the part numbers for both version for this board and I will post back soon.

Thank you

Expert:  euro-pro llc replied 7 years ago.

Here I am ,as I promised,

The part# ***** the DG board is:

TNPA4129S for

TH-50PZ700U and

TNPA4415ADS for


I also attach here a picture with board layout inside of TV,that you will identify them easily:

Panasonic Viera TV Board layout

It looks that these are available at ""

See link please:

The price on them is very high,but at least now you can make a decision about trying to fix this issue or not.

Thank you