Anyone wondering about removing the TV's back cover for the VSUS Pot Adjustment with a Panasonic VIERA TC-P55UT50 55-Inch
to remove the nasty Yellow/Pink blobs...i successfully did this to mine tonight and it 100% eliminated all the yellow discoloration yellow/pink blobs i had on my right side of my screen. I had bought this tv from Amazon and little by little this yellow and pinkish blob started rearing its ugly head. I am coming from a 2009 50' G10 Plasma which bit the dust recently..and i really like the PQ of this UT50 for the price..so i just opted for this set..the thing is...i really did not want to go through the hassle of fighting for a return,etc since even though i bought it from Amazon..it was not "fulfilled" by Amazon themselves...so i already been through other issues in the past with stuff like TV's,etc and i know the process is tedious and sometimes can be long going..so i just said screw it and went for it all tonight lol.
First of all i want to thank Tom669 on the information which helped me finally get rid of the big ugly yellow blob i had on the right side of my screen. Thanks to the few guys in here as well..for the info they shared on the manual VSUS pot tweak!
1. I first did the "service menu" VSUS adjustment ..my default setting for the VSUS was LOW....i changed it to HIGH and it helped eliminate 80% of the yellow blob i had on the far right side of my screen. Adjusting the VSUS via service menu changes the voltage on my set by 5..example on my default LOW setting my voltage is 208, switching it to HIGH makes my voltage 213. Just wanted to share that bit of info..it seems it's a bit different per TV from what i read other peoples experiences. Keep that in mind i guess. Anyways..changing from LOW to HIGH in the Service Menu took a great deal of the yellow/pink blobs away but not all away so i proceeded to step 2 below.
2. I was still not happy so i decided to take the back cover off my TV and give the manual VSUS Pot Dial adjustment a shot (fingers crossed at this point)
Note: The TC-P55UT50 has only "ONE" VSUS Pot Dial on the back of the TV, not "two" like the higher end models. (Look at the pictures i took below)
3. My initial voltage reading was 213 before i made any adjustments to the VSUS Pot Dial. My VSUS Pot Dial was set about 3 O'Clock (estimation)
4. I adjusted the VSUS Pot Dial by a tiny hair just to get a "feel" for how sensitive that VSUS Pot Dial was..after that very TINY adjustment... my voltage reading was now at 215, most of the yellow blob now gone but still slightly visible just letting my TV sit on a pure white image using my PC connected to this HDTV.
5. I made one more adjustment..this time i moved the VSUS Pot Dial to about 5 O'clock and my new voltage reading was now at 218.5 on a pure white background image. After sitting back and watching my tv on a pure white background for 30 minutes...all yellow blobs/discoloration was 100% gone. Normally the blobs would of re-appeared with in 5 minutes. Again..using Vivid Picture setting and Coo1 setting...and Contrast and Brightness settings both at 100 ..to tax the TV as hard as possible to make sure it's stable on full load. Works like a charm! No Yellow blobs and my entire screen is snow white using a all white bright image.
Just a few notes i want to add...
Again, I made sure my TV's picture setting Contrast and Brightness was both at 100 to get my picture the brightest! I also had my TV's service menu VSUS set to HIGH during the entire time i adjusted the manual VSUS Pot Dial at the back of my TV. I noticed when watching my voltage meter that when switching my TV's picture sub settings to Warm or Cool that "warm or cool" draw the most voltages vs normal sub settings. So probably a good idea to adjust your TV's picture sub-settings to either Cool or Warm to put the TV in full load when doing this manual vsus pot tweak at the back of the tv.
This manual VSUS Pot Dial adjustment was easy as can be...anyone thinking about doing it but is a bit gun shy...believe me..its not as hard as it may sound. Just take your time and you will be rewarded!! This "IS" the issue with most of the yellow/pink blobs/discoloration going on...it baffles me that Panasonic simply do not train their tech's to just adjust the VSUS pot on the back of these TV's...just total amazement that Panasonic do not have better quality control with this glaring issue that is more apparent then people realize. Although these Panasonic Plasma's are very rewarding with PQ without these blobs. Not sure how wide spread it is but from tons of research in here..it seems a decent size of people have experienced such issues..i still really like these Panasonic Plasmas though..closest thing to CRT HD Tube PQ still in my opinion...even though my older G10 bit the dust after 5 years..i still wanted to stick with Panasonic Plasmas and still do even after this.
I really feel bad for all the people having to endure this BullCrap after spending big bucks on a Panasonic Plasma ...it's just totally uncalled for..i guess this is why i just told myself..screw it, i will take matters in my own hands and just go for it...and it paid off! I am a very happy camper now...PQ is how it should be now which is strong, natural, crisp with nice inky blacks/colors.
Below are some pictures i took of the back of my TV where the VSUS pot dial is located for a Panasonic VIERA TC-P55UT50 55-Inch(Careful of shocks with the back cover off - I've been shocked by my older G10 panny when i had to work on the back of that TV years ago & the shock was strong although im still here lol)
HIGH RESOLUTION IMAGE #1 (Right Click & Save As) http://106.imagebam.com/download/38B545ZgtuCtT1K01UCl_w/28248/282479955/1A.jpg
HIGH RESOLUTION IMAGE #1 (Right Click & Save As) http://102.imagebam.com/download/qPII7v63zwdtGmBp-YVKNA/28247/282460815/2.jpgEdited by Moegames - 10/18/13 at 2:06am