Philips 42" Plasma - Model 42PF7320A

[tom66]

Re: Philips 42" Plasma - Model 42PF7320A

Who made the plasma panel in this set? Order boards from that. They may be marked as Philips boards, but they are most likely made by Samsung.

[Injustice]

Re: Philips 42" Plasma - Model 42PF7320A

What brand should I buy ? Samsung or Phillips ?

The Original in the TV now, is Samsung but when I bought the Sound Card last year, I got Phillips - which is working well.

Logic states to go with Philips vs the Samsung Brand that failed.

Is there a difference ? Do you have preferences in these brands ?

[tom66]

Re: Philips 42" Plasma - Model 42PF7320A

The X-main fails on these sets fairly often. When it fails, the gas in the panel doesn't fully discharge -- it almost looks as if the panel is broken, but it isn't. The gas isn't completely even, so some parts discharge and others don't when the X-main isn't providing enough energy for the panel to fully discharge. If the panel were broken, you'd see no image at all and instead hear a loud buzzing sound from the glass.

As far as repairs go, I'd highly suggest you replace the X-main first. The Y-buffers can be replaced after replacing the X-main if distortion is still an issue.

[Injustice]

You guys seem to be doing some great work on this site. Keep it up.

I just need some Good Advice on how to proceed with Properly Identifying the problems associated with this Plasma TV.

I have little experience with these matters and no equipment to test, sorry.
I opened it up looked at the Boards and none of them look like they are burned / no smell either.

There was some work done to this TV last year.
I changed the sound board - due to the loss of audio and
A local tech fixed a power issue by soldering some caps and putting in some heat sinks - to help with the overheating. That was another cost by itself.

tomm66, said :
"Yes - bad X-main, replace the X-main. Post a thread if you need more help." and
"Looking at the picture, it also looks like the Y-buffer may be bad, but the X-main is causing the discolouring too."

based on his evaluation of the photo, I am prepared to purchase these boards and replace them myself.
I am thinking this however, seeing that I am already in there - shouldn't I change out all the other boards too. I don't want to go back in there in a hurry

I have all the numbers for the following boards :

Y-buffer lower -
Y-buffer upper
X-Main
Y-Main

From reading other posts, changing one board alone might not do the trick and seeing that I have to send to the USA to get these parts - maybe I can save some time and money while at it.

I was alarmed when I saw the thick Black horizontal bar - thought it was the screen that failed. Why is it in 2 parts and not one continuous solid line ?
How will I know when the screen fails ?

My final question is : Are there any other issues that I might have to consider in completing the repair of this TV ?

Thanks in advance.