Confusion with Panasonic A boards

[dcapper]

Reading here and Shop Jimmy has gotten me all confused. What I do know is my A board is TNPH0831 3A Suffix AP. I can't find one anywhere but what I did was search the panel number ( MC106H30U13) on Shop Jimmy and the search results gave me an AR and an AT suffix. Can I buy one of these boards?

[selldoor]

Re: Confusion with Panasonic A boards

Why not ask Shop Jimmy?

[tw2005]

Re: Confusion with Panasonic A boards

Reading here and Shop Jimmy has gotten me all confused. What I do know is my A board is TNPH0831 3A Suffix AP. I can't find one anywhere but what I did was search the panel number ( MC106H30U13) on Shop Jimmy and the search results gave me an AR and an AT suffix. Can I buy one of these boards?

So you have a 42" 720p HD model. I can't find Revision AP either, not even a google search.

Watch out for missing or extra features / connectors and AV sockets for fitment into the chassis. Just because the board has an extra socket does not mean it's used.

e.g A17, JK2108 (DB15 socket)

The TNPA0831 is used for a lot of sizes and both Full HD and HD, so be careful but searching the panel number can help unearth parts in a search.

I would determine first where all the cables plug into yours first so you know what's essential.

A good photo of yours would help. We can see what SJ has, can't see what you have or the model number.

[dcapper]

Re: Confusion with Panasonic A boards

I'll take a pic when I get home. It looks identical to the R version. TXN/A1LAUUS It has the db9 connection. I did contact Shop Jimmy. They never replied.

[dcapper]

Re: Confusion with Panasonic A boards

Here is the pics. Mine doesn't have the vga connection. It looks like the AR version has the VGA and the AT do not. Both the AR and AT have the panel number of MC106H30U13 according to Shop Jimmy's webpage. Yet I cannot find an AP version anywhere. My board has resistors on 2,3, and 5.

[tw2005]

Re: Confusion with Panasonic A boards

Either should work assuming Canada and the US have the same broadcast standards, something I can't answer. I suspect they are.

It does look near impossible to find any of these boards though.

I have read of people using http://www.moduslinkptstvboards.com/...h0831&x=9&y=11

for repair but yours looks damaged on one ribbon connector, an IC is missing and a missing heatsink. Not cheap for what the TV is probably worth.

The only issue with the VGA is it not having a cutout in the rear panel for it. A17,A18 both are factory use only so should not be an issue whether they're present or not.

Is this TV a TC-P42X2? If so an alternate number to search would be TXN/A1MCUUS

what was the original fault or is this how you got it?

[mmartell]

Re: Confusion with Panasonic A boards

If it's just the vga port then remove it so it fits with the back on.

[dcapper]

Re: Confusion with Panasonic A boards

Yes, the tv is a TC-P42X2. Someone beat the heck out of the board. There is chips missing and ribbon connectors broken. The board is non repairable. I did see some A boards on Ebay but they are the wrong revision numbers. There is AT and AR boards and if they work, I can get one on for around $120. It's actually worth it for me, since I got the tv for free. Why would Panasonic build so many revisions of these boards? Who does that? Stupid in my eyes.

[tw2005]

Re: Confusion with Panasonic A boards

Yes, the tv is a TC-P42X2. Someone beat the heck out of the board. There is chips missing and ribbon connectors broken. The board is non repairable. I did see some A boards on Ebay but they are the wrong revision numbers. There is AT and AR boards and if they work, I can get one on for around $120. It's actually worth it for me, since I got the tv for free. Why would Panasonic build so many revisions of these boards? Who does that? Stupid in my eyes.

So was the A board like this? Do you know what the fault blinks were before that A board was messed with?

edit> in regards to the revisions it's actually because they design one board and then configure it for the size of the TV and whether it's HD or FHD model.

I guess what would make it easy would be if you could change the panel config in a menu but as you can see there are other features added depending on the spec level of the TV, eg. the VGA socket, SD readers etc.

[dcapper]

Re: Confusion with Panasonic A boards

So was the A board like this? Do you know what the fault blinks were before that A board was messed with?

edit> in regards to the revisions it's actually because they design one board and then configure it for the size of the TV and whether it's HD or FHD model.

I guess what would make it easy would be if you could change the panel config in a menu but as you can see there are other features added depending on the spec level of the TV, eg. the VGA socket, SD readers etc.

It was like it when I got it. The blink code I believe was 10. As soon as I opened it, I saw the butchered up main board and just started looking for one.

I searched the panel number on Shop Jimmy. That's where the AR and AT code came up.

[tw2005]

Re: Confusion with Panasonic A boards

It was like it when I got it. The blink code I believe was 10. As soon as I opened it, I saw the butchered up main board and just started looking for one.

I searched the panel number on Shop Jimmy. That's where the AR and AT code came up.

10 blink could be mainboard. Can also be SN board, SS,P etc and this model tends to short Vsus at the SS giving 4 blinks.

I guess what I'm hinting at is that it may only need an A board but you could have other faults.

[dcapper]

Re: Confusion with Panasonic A boards

I looked at the service manual and the A board listed isn't even close to mine. Panasonic sure made things confusing. Probably on purpose. Here's what Shop Jimmy emailed me back this morning.

Unfortunately, if your board has am AP suffix then that is the one you must find. Panasonic doesn't usually do substitutes when it comes to their main boards. They are really suffix specific. I would recommend doing a Google search with TNPH0831AP and you may find it that way.

But if my panel matches an AT suffix, one would think that would work? The model that the AT board comes out of is the TC-P42C2 model. Mine is the TC-P42X2. I think the C version is USA and the X version is Canada.

[tw2005]

Re: Confusion with Panasonic A boards

I looked at the service manual and the A board listed isn't even close to mine. .

Please explain? this does not make any sense. I've looked at the manual and it's exactly like yours.

Which part is nothing like yours? For starters the PCB number is THPH0831.

That's one thing which is the same.

[dcapper]

Re: Confusion with Panasonic A boards

Please explain? this does not make any sense. I've looked at the manual and it's exactly like yours.

Which part is nothing like yours? For starters the PCB number is THPH0831.

That's one thing which is the same.

Got me what I was looking at. I'm looking at now and it shows the alternate part number in the x2 manual as TXN/A1MCUUS like you said before. I really am curious to see if an AT board will work. It's identical and it goes into a TC-P42C2 tv.

I went to the Panasonic firmware support page and it shows all these models using the same firmware.

http://panasonic.jp/support/global/c.../down_nap.html

Also, I just went through the service manual for both the X2 and the C2. The boards are the same except for the A board. They use the same panel type too. Wouldn't I just be making my tv think it's a C version instead of an X version?

[tw2005]

Re: Confusion with Panasonic A boards

Got me what I was looking at. I'm looking at now and it shows the alternate part number in the x2 manual as TXN/A1MCUUS like you said before. I really am curious to see if an AT board will work. It's identical and it goes into a TC-P42C2 tv.

I went to the Panasonic firmware support page and it shows all these models using the same firmware.

http://panasonic.jp/support/global/c.../down_nap.html

Also, I just went through the service manual for both the X2 and the C2. The boards are the same except for the A board. They use the same panel type too. Wouldn't I just be making my tv think it's a C version instead of an X version?

It'll make no difference to how the panel is driven or anything else except the subtle feature differences.

I have a X20A which is also the same panel as yours and I installed a new zealand board so effectively it became a NZ tv at that point. I then swapped the eeproms and flash chips from my AU board and it then became Aussie. NZ and Au broadcast is different so no channels but after EEPROM swap it worked fine except I had display issues which I can not figure out. they were present before and after so it was not the chip swap.

So as i mentioned earlier, so long as the broadcast system in canada and the US are the same it will function like a TV. If they're not it won't pickup the channels on a scan.

The only EEPROM different between the 2 is IC8004. Worst case you have to transfer that across but I think that will have something to do with enabling the features of the board not tuning.

The tuning data is contained on one of these chips but i reckon it'll be fine.

That's the best I can do unless somone here has used alternate model boards before.

[dcapper]

Re: Confusion with Panasonic A boards

It'll make no difference to how the panel is driven or anything else except the subtle feature differences.

I have a X20A which is also the same panel as yours and I installed a new zealand board so effectively it became a NZ tv at that point. I then swapped the eeproms and flash chips from my AU board and it then became Aussie. NZ and Au broadcast is different so no channels but after EEPROM swap it worked fine except I had display issues which I can not figure out. they were present before and after so it was not the chip swap.

So as i mentioned earlier, so long as the broadcast system in canada and the US are the same it will function like a TV. If they're not it won't pickup the channels on a scan.

The only EEPROM different between the 2 is IC8004. Worst case you have to transfer that across but I think that will have something to do with enabling the features of the board not tuning.

The tuning data is contained on one of these chips but i reckon it'll be fine.

That's the best I can do unless somone here has used alternate model boards before.

Very informative post. Thank you. I will only be using it with hdmi and component. I'll never use the tuner. But yes Canada and USA use the same broadcasting.

[dcapper]

Re: Confusion with Panasonic A boards

UPDATE:

I replaced the A board with an AT board. Still getting the 10 blink code. Had a spare power supply too. No change. I guess the tv is junk. I can't find an AP revision and this board cost me $130.00

[tw2005]

Re: Confusion with Panasonic A boards

Not many options.

Keep fault finding and spending $$

return the A board or sell and walk away

having to replace the A at that cost really makes it uneconomic . Ok if it turned out to be the only issue and you got the tv for almost free to begin with.

You could poke around and do some resistance checks on some of the power lines and see if there's anything shorted.

disconnect cable at SS11.
Measure the resistance between pin 1 SS11 (Vsus) and ground.
Measure the resistance between pin 4 SS11 (P+15v) and ground.


disconnect cable at SN2
measure the resistance between pin 1 of SN2 (Vsus) and ground.

Disconnect SN20
Measure the resistance between pin 1 SN20 (P+15v) and ground. or across C581 on the SN located top right near SN3,IC581 etc

Measure the resistance between pin 30 SN20 (P+5v) and ground. or across C561 on the SN located near SN20,C563.

[dcapper]

Re: Confusion with Panasonic A boards

I will meter those points and post updates. I'm finding I have no power coming out of the power supply but is that because the A board is not forwarding the power?

[tw2005]

Re: Confusion with Panasonic A boards

I will meter those points and post updates. I'm finding I have no power coming out of the power supply but is that because the A board is not forwarding the power?

No power? need to be more precise. Obviously if you have a 10 blinking LED there's some power.

If you're talking no Vsus, vda etc , it should be there at startup until SOS blink which obviously shuts it all down except standby voltages.

You could backprobe vsus , then turn on, should see it but if it has a dead short across it say from SN or SS(common failure shorted at SS) then it won't.
Shorted vsus can cause 10 blink too.