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Search: Posts Made By: mmischni
Forum: Troubleshooting TVs and Video Sources 09-20-2017, 08:39 AM
Replies: 5
Views: 1,660
Posted By mmischni
Re: Panasonic Viera Plasma TH-42PX75U 7 Blinks/8 Blinks/burned P board?

I know posting a second thread on the same issue is poor form, but I thought maybe I over-did it on details in my first post, and no one wanted to read it all. So I tried again with just the basics...
Forum: Troubleshooting TVs and Video Sources 09-20-2017, 08:33 AM
Replies: 8
Views: 2,138
Posted By mmischni
Re: Panasonic Viera TH-42PX75U with 7 Blinks

A replacement D board was available for $24 from ShopJimmy, so I ordered one. Installing that gave me 6 blinks! Now I was getting somewhere. Using the 6 blink trouble shooting, it led me to...
Forum: Troubleshooting TVs and Video Sources 09-19-2017, 10:27 AM
Replies: 8
Views: 2,138
Posted By mmischni
Re: Panasonic Viera TH-42PX75U with 7 Blinks

Looks like the D board handles the following processes:

Format Converter
Plasma AI
Sub-Field Processor

Unfortunately I don't know exactly what those processes are. Do any of these sound...
Forum: Troubleshooting TVs and Video Sources 09-17-2017, 06:22 PM
Replies: 8
Views: 2,138
Posted By mmischni
Re: Panasonic Viera TH-42PX75U with 7 Blinks

Any other ideas for me?

Is the D board the location of the on-board diagnostic circuitry? If so, maybe that would jive with what I am seeing. A fault on the D board maybe causing inaccurate blink...
Forum: Troubleshooting TVs and Video Sources 09-15-2017, 08:01 PM
Replies: 8
Views: 2,138
Posted By mmischni
Re: Panasonic Viera TH-42PX75U with 7 Blinks

So how about this? Once I disconnect the SC board, I get 8 blinks. If I use the troubleshooting flowchart for 8 blinks (attached), it leads me to the D board. TV still shuts down with the SS...
Forum: Troubleshooting TVs and Video Sources 09-13-2017, 07:07 PM
Replies: 8
Views: 2,138
Posted By mmischni
Re: Panasonic Viera TH-42PX75U with 7 Blinks

Thanks for helping out.
So the TV does not run with the SC board disconnected (two connectors, 1 power and 1 ribbon). I assume that means the buffers are also then disconnected, as they only seem to...
Forum: Troubleshooting TVs and Video Sources 09-13-2017, 05:47 AM
Replies: 8
Views: 2,138
Posted By mmischni
Re: Panasonic Viera TH-42PX75U with 7 Blinks

Hi. The upper left connector on the power board is P2. It goes to 195V before the TV shuts off. Vsus is supposed to be 194V according to the sticker in the TV. Continuity test at the SC2 connector...
Forum: Troubleshooting TVs and Video Sources 09-12-2017, 08:38 PM
Replies: 8
Views: 2,138
Posted By mmischni
Panasonic Viera TH-42PX75U with 7 Blinks

Hello,

I have a Panasonic plasma born December 2007. It recently started giving the 7 blink error code. I followed the flow chart for 7 blinks (attached below) in the troubleshooting guide that I...
Forum: Troubleshooting TVs and Video Sources 09-08-2017, 06:09 PM
Replies: 5
Views: 1,660
Posted By mmischni
Re: Panasonic Viera Plasma TH-42PX75U 7 Blinks/8 Blinks/burned P board?

So I should probably put that diode right back in, as my diode tester probably isn't the right tool to know anything about that diode.

Any thoughts on the rest of the issues and how they have...
Forum: Troubleshooting TVs and Video Sources 09-07-2017, 08:11 PM
Replies: 5
Views: 1,660
Posted By mmischni
Re: Panasonic Viera Plasma TH-42PX75U 7 Blinks/8 Blinks/burned P board?

The back of the board looks ok to me. Picture attached, back side of diode highlighted. I realized that I was probably testing the legs of that adjacent coil device rather than the diode. I removed...
Forum: Troubleshooting TVs and Video Sources 09-06-2017, 09:01 PM
Replies: 17
Views: 2,055
Posted By mmischni
Re: Vizio LED Backlight Issue? Dark areas

P/N in this case is Part Number of those components. What numbers are printed on them?
Forum: Troubleshooting TVs and Video Sources 09-06-2017, 08:52 PM
Replies: 5
Views: 1,660
Posted By mmischni
Panasonic Viera Plasma TH-42PX75U 7 Blinks/8 Blinks/burned P board?

Greetings friends,

I have a Panasonic TH-42PX75U manufactured in 2007. It has been trouble-free until recently. One evening I turned it on and it then powered back off and gave 7 blinks.

First...
Forum: Announcements & Related News 09-06-2017, 08:52 AM
Replies: 30,520
Views: 3,349,110
Posted By mmischni
Re: New Members - please post your introductions here

Hello, Matt from Wisconsin USA. I have been happily enjoying my Panasonic plasma since 2007, but now it is giving error codes. Lots of research led me here as a great place for info. After I read a...
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