I have a Panasonic TH-42PD25 and the red light is on when you power it up but there is no picture. Has been working perfectly for the last 5 yrs.

SOURCE: (panasonic TH-42PZ77U plasma) the tv will power on

in protective mode the tv does not turn on and light is blinking, typically we must proceed by elimination as some faulty sections are preventing the tv to switch on. unplug the output power connectors from the power supply until the latter stop clicking. if it is still clicking after every of the output rail have been disconnected, then the power supply itself is faulty.

hope this helps!

SOURCE: Panasonic TH-42PD25 The picture is black with

Make sure if your using the video input jacks, that the yellow is plugged into Video 1 and the same with the audio.Red & White. If your using Component, they are color coded- Red Blue & Green along with the Audio In -Red & White. It sounds like you have the video in the wrong jack.

SOURCE: Panasonic TH-50PZ80U tv, error- 2 blinks

1. Reseating the connector P25 may solve the problem. If it does not.
2. Unplug the unit andd disconnect the connectors A5, A6, and A7. Apply power to the TV. If a White screen comes up and all voltages check normal, replace the P board.
3. If the TV stays on after isolating the SC board, then replace the SC board and the D board; it is likely that the fuse on the D board is blown.

SOURCE: panasonic th-42pd25 pops on and. Will go to black

What do they mean , anyone can post, do they mean the part?

What is this part?

It sounds like Panasonic have admited it's a problem and they should fix it.
Is it under warranty or just out?
If it is just out, you should still be able to make a claim.

I hope I have helped you.

Regards - Anthony

SOURCE: panasonic th-42pz77u has no picture.power light

seven blinks on this model is the SC board. it will need a new SC board and the software update for the new board. usually only authorized servicers have the software need to do the upgrade. but if you were to contact panasonic then they might be able to have it fixed for you for free since this was a defect in manufacturing. of course this depends on how long you have had the tv.