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Panasonic 11G/12G/13G black levels have seemingly doubled overnight? - Page 372

post #11131 of 11159
Great news Dane!!!smile.gif

Thanks for the work!!!

Im from Argentina, maybe EBay is a good choice, I have Pay Pal too...
post #11132 of 11159
Quote:
Originally Posted by StinDaWg View Post

Not gonna lie. Woulda bought it for $30. $60 is pushing it for me, but from reading your post I understand why it had to be done.

 

I appreciate the honesty StinDaWg.  I almost hung up the hat when the prices were twice what I thought they would be.  My wife pushed me to see it through..  You are always welcome to go the DIY approach, or wait until someone else decides they don't want to keep theirs and might sell it second-hand.  One possibility is that the first 100 barely sell, and that's it.  Another possibility is that they sell so quickly (if they work as well as I hope they do), then I'll have to make a much larger purchase on the second go-round.  Quantity always helps cost. Obviously I think we all hope for the latter.  :)

 

Quote:
Originally Posted by eaayoung View Post


You could always buy one then lease to other members to help recoup your cost.

 

Or find a local buddy with the same model to split it with you and rotate it back and forth..

 

Quote:
Originally Posted by bendergender View Post

Great news Dane!!!smile.gif

Thanks for the work!!!

Im from Argentina, maybe EBay is a good choice, I have Pay Pal too...

 

Thanks bendergender- I'm glad that an eBay option is acceptable to you.  This is the first international feedback I've received regarding potential purchase and shipping choices..

 

I just got in the final connector quotes.  I'll be pulling together final numbers tonight, posting an update in the coming days.  Unfortunately, one of the two final quotes that came in was actually HIGHER than the first supplier.  I was very surprised by this.  The connector quote is also not as low as I'd prefer.  I'll be ordering 100pcs but spread across three part numbers.  I was hoping that they would still give me 100pcs pricing even though it was spread across three connector types, but they said no.  That would have cut the connector cost by several dollars.

 

Once I get all the cost breakdowns, I'll try to put together a little graph of where all the costs are found.  I think most people would find that chart interesting, I know I was surprised by it..

 

cheers,

..dane

post #11133 of 11159

I'm based in Australia and I've got the TH-65PZ850A and I am interested in purchasing this as well.

post #11134 of 11159
Quote:
Originally Posted by Champ77 View Post
 

I'm based in Australia and I've got the TH-65PZ850A and I am interested in purchasing this as well.


 I'm guessing this is functionally similar to the TH-65PZ850U?  If so, then my earlier investigation shows this should work, but until I get a service manual for the set, I won't know for sure if it has the same service connector and pinout.

 

Mironto did a great job going through the feedback he's received and sent me a list of various updates from people and their set model numbers that he knows have successfully applied the DIY approach.  I have not yet had time to go through that list and update my pmcv1 model support page, but hopefully this coming week will have time to do that..

 

can't thank mironto enough for putting his DIY site together from which all my work is based, and naturally all those before mironto who have been digging away at this problem for years and finally found a fix!  all kudo's go to them!

 

..dane

post #11135 of 11159
Thank you Mironto!

I had resurrected MLL on my th42-pz80u (11G). Looks as good as new. The set had 7300 hours. I wasn't able to get a good contact on 30 pin service connector (lack of correct connector) on my th-pz77u to see if I can get the blacks back on my 10G panel.
post #11136 of 11159
I want to thank everyone for all of their advice in this thread! I restored the black level on my P42G10 tonight. I had 2400 hours on mine and was getting frustrated with the blacks, but now I'm happy again smile.gif.

The picture below is using the same lighting, same location, same camera settings. The one on the left is pretty close to what my TV actually looked like. The one on the right is slightly darker than it really is, but it's a big difference! (Ignore the really crappy LCD PC monitor on those pics, it's 8 years old and ready to be retired.)




Again, thanks everyone for their awesome advice!
post #11137 of 11159
Quote:
Originally Posted by tpaxadpom View Post

Thank you Mironto!

I had resurrected MLL on my th42-pz80u (11G). Looks as good as new. The set had 7300 hours. I wasn't able to get a good contact on 30 pin service connector (lack of correct connector) on my th-pz77u to see if I can get the blacks back on my 10G panel.

Ok so I decided to try tapping to my 10G 77U today and was able to read the EEPROM. It is really difficult to connect to as I had to use 3 pins on 30pin connector(i2s control, SCL, SDA) though I had ground connected to 11pin connector.
Now I've accessed the service menu and checked number of hours and power cycles:
hours 339:00 count 559
Then I read EEPROM and here is what I've got.
Reading EEPROM memory from address 0 to 9
0x01 0x01 0x4A 0x06 0xC6 0x02 0x15 0xFF 0xFF 0xFF

Now if I convert byte 6 and 7 to decimal I get 0x215 <=> 533 which doesn't match my count of 559 (or possibly 600 as I had power on cycle in between). I can try to overwrite the content of EEPROM but I need to learn first how I can restore it back if it fails to work afterwards.

On my other TV EEPROM content looked like this:
Panasonic th42-pz80u (time 7800:40 1939)
Reading EEPROM memory from address 0 to 9
0x00 0x1F 0xC3 0x43 0x0F 0x07 0x8B 0xFF 0xFF 0xFF
post #11138 of 11159
Why didn't you use 11-pin connector for connecting all four wires?
The thing is, there are two counters - one in PEAKS EEPROM (the one you can read hours from on the TV through service menu) and one in A-BOARD EEPROM (the one that drives the MLL and which we reset here). You can reset each one independently without affecting the other. I am speculating here, but there might be an option, that under some circumstances, the TV might not be able to successfully
write to one of the EEPROMs the new values (e.g. power loss) and thus after a while you get discrepancy in PEAKS and A-BOARD values. In both cases the values seem "close"

PZ77U:
hours
339 vs. 0x01 0x4A = 330 + something
on/off
559 vs. 0x02 0x15 = 533

PZ80U:
hours
7800 vs. 0x1F 0xC3 = 8131 + something
on/off
1939 vs. 0x07 0x8B = 1931

If you want to restore the hours, I've discussed it with user jyqureshi a few posts back.
post #11139 of 11159
Quote:
Originally Posted by mironto View Post

Why didn't you use 11-pin connector for connecting all four wires?
The thing is, there are two counters - one in PEAKS EEPROM (the one you can read hours from on the TV through service menu) and one in A-BOARD EEPROM (the one that drives the MLL and which we reset here). You can reset each one independently without affecting the other. I am speculating here, but there might be an option, that under some circumstances, the TV might not be able to successfully
write to one of the EEPROMs the new values (e.g. power loss) and thus after a while you get discrepancy in PEAKS and A-BOARD values. In both cases the values seem "close"

PZ77U:
hours
339 vs. 0x01 0x4A = 330 + something
on/off
559 vs. 0x02 0x15 = 533

PZ80U:
hours
7800 vs. 0x1F 0xC3 = 8131 + something
on/off
1939 vs. 0x07 0x8B = 1931

If you want to restore the hours, I've discussed it with user jyqureshi a few posts back.

PZ80U is a done deal like I mentioned in my previous posts. I was able to reset it and I really appreciate your web site that helped get through this. Now Pz80u is 11G panel and it has I2S_Control, GND, SDA(panel), SCL(panel) pins on 11pin service connector.

PZ77U is 10G panel, that supposedly not affected by this according to some sources. Though I have opposite experience. I have measured with low hours (way less than 300 hours) and after and the difference in MLL is huge. Therefore I want to try resetting the counter but in hopes I can restore the blacks.

Thanks for showing how to interpret the hours from the return string. On your website you've mentioned that you don't know how, perhaps you should update it.
post #11140 of 11159
Also PZ77U doesn't have I2S_control, SDA panel and SCL panel signals routed to 11pin service connector and that is why I had to tap into 30pin connector instead.
post #11141 of 11159
Ok. I did the reset and I can confirm it works! I've ran the measurements and MLL on 0IRE window is down to 0.015ftl from 0.029ftl. Also if I display a black field (no signal on input) it is down to 0.012ftl, This is what I've measured when it was new. Though it is hard to say it is not new as it's only have 339 hours.
In service menu peaks counter still reports the correct number of hours and power on cycles.
So the black level can be restored on 10G panels. Mine th-42PZ77U was manufactured in October 2007.
Edited by tpaxadpom - 3/13/14 at 10:29pm
post #11142 of 11159
Thank you tpaxadpom for the info provided! I forgot the PZ77U is a 10G model and I am surprised that it exhibited the MLL rise issue (contrary to what was reported by e.g. LarryInRI). Do you notice any anomalies with the set (e.g. some pixels misfire) or everything seems to be normal (except the improved blacks)? Could you please take some pictures of the 30-pin connector as well as back of the TV to show the position of the connectors with description what needs to be connected where and post it here or via PM? I'll update the guide with your findings.

I am still not 100% sure about the clocked hours interpretation. From what I know it seems that the first two bytes are indeed hours, but the other two bytes must represent some additional hours/minutes/seconds (that + something in my equation). If there really are some deviations in recording clock in PEAKS and A-BOARD EEPROMs, it might be the cause why we were unable to decode the bytes successfully. Maybe if we reset values both EEPROMs and then run the set for some time and compare the values afterwards? The problem with that is I already replaced my set with ST60 so the G10 is sitting behind the couch disconnected collecting dust rolleyes.gif
post #11143 of 11159
Hi Mironto,

I have similar situation as you. I don't watch my 10g 77u much. It is a bedroom set and I've only put 339 hours on it in the last 6 years. 11G 80u is a different story as my mom is watching it daily. was able to make connection using header pins on my 10G panel and left them there until I could figure out the programming syntax in case I needed to restore the values back. Then I saw your post referring to instructions posted on the previous page and went with reset (thanks again for providing this valuable information). I didn't do visual comparison before and after reset as I didn't wanted to mess around the wire leads even on adruino side. After the reset I saw black level improvement with the lights on. With the lights off it didn't look very impressive so I decided to verify my observations with colorimeter measurements before and after the reset. I recently tweaked my 9G kuro, so I have a good point of reference when black bars merge with the bezel.
I will take a picture and draw a schematic diagram so that you can update your guide for 10G.
post #11144 of 11159
So I can report I don't have any visible artefacts on my 10 generation panasonic th-42pz77u.Just use mironto's guide to reset black level and the pictures provided should help you to have it connected.

post #11145 of 11159
Thanks a lot, could you also please take a picture of the back of the TV to show the connectors' possition?
post #11146 of 11159
Hi Mironto, here it is.
post #11147 of 11159
What about the PZ700U?
post #11148 of 11159
PZ700U is 10 generation, so it is likely similar to my PZ77U. Download the service manual and compare to the screenshots I've provided above.
post #11149 of 11159
Thanks.
post #11150 of 11159
@audiodane Any news on the Reset Widget?
post #11151 of 11159
Quote:
Originally Posted by samdrlvt View Post

@audiodane Any news on the Reset Widget?


I must have 'sensed' your post, because I just logged in here for the first time in weeks and saw your question. weird..

 

Anyway, work has hit HARD.  I have a preliminary deadline today (which is why I'm still up at 5am)..  I have a hard deadline next tuesday.  Needless to say, it has sapped EVERYTHING out of me for the past four weeks, and will for one more week. I am very sad to say this means the boards have not yet been ordered.  I'm exhausted, and suspect I will probably sleep an entire day tomorrow, and another several days straight next week after the hard deadline passes.  Then I will be able to breath again and get back to the PMCv1.

 

I am excited that someone has confirmed a 10G unit has benefited from the reset as well. I will have to go back and see if I already have those connectors on my list.  The 11pin looked like it was missing the I2C_CONT bus request signal.  I seem to recall seeing that in a few models..

 

Anyway, sorry for the absence.  One more week then I should be able to get back on track.

 

cheers,

..dane

post #11152 of 11159
This sounds pretty good.

So resets with no post reset VOL adjustments necessary ?
post #11153 of 11159

I was looking up solutions to fix my black levels and discovered this thread. Lot's of good information but I'm not to sure I can do the DIY approach so I will also gladly pay the $60. It's better than buying a new tv which I was considering until I found out there was a solution. Looking forward to the release of the PMCv1. 

 

EDIT: I have a TC-P54S1 


Edited by Chia5 - 3/27/14 at 2:56pm
post #11154 of 11159
I have the 50" S1 and it was definitely improved. I did that back in October, so I'm expecting to come home from work one day and see it ready for another reset.
post #11155 of 11159
Thanks for all the effort. Is there anyway we can be notified by email when the PMCv1 is available? I don't want to miss the boat.

Thanks

I guess I will subscribe to the thread.
post #11156 of 11159
Quote:
Originally Posted by zhe zhang View Post

Thanks for all the effort. Is there anyway we can be notified by email when the PMCv1 is available? I don't want to miss the boat.

Thanks

I guess I will subscribe to the thread.

 

Hmm, I haven't ever thought to look for one.  I'm using WordPress, and am fairly new to it.  I will look around.   There is an RSS feed you can subscribe to, if you have an RSS reader..

 

Work has settled down, I'm finally back on this project!  Should have the first PMCv1 units on order in the next week or so..

 

cheers,

..dane

post #11157 of 11159

Okay, I *think* I have email notifications implemented..  You'll have to put in your email address at the bottom of one of the pages on the site.  I've tested it and it seems to be working.   Thanks for the suggestion!

 

..dane

post #11158 of 11159

Great news Dane.  Anxiously awaiting to click the "order" button.  Great work.

post #11159 of 11159
Subscribed (and waiting with baited breath...) biggrin.gif
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