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vaio



Joined: 05 Nov 2009
Posts: 24

PostPosted: Wed Nov 25, 2009 4:02 pm    Post subject: Reply with quote

This photos better show ....
width of left vertical line is same like right line in 4:3 mode.




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The_AntiRAM
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PostPosted: Wed Nov 25, 2009 10:03 pm    Post subject: Reply with quote

EXPLANATIONS:


X-SUS (or called also z-SUS)
and
Y-SUS are complex circuitry that are delivering impulsive energy to the
tubes in the plasma panel (Eccitation)

Video patterns are "coordinated delivered" via the buffers.

These boards (SUS) are located on the sides and are that with those big coolers
on top (Aluminium) (warm)

they are delivering high voltage (180 to 280 volts depending on panel) with
precise phisics of waveforms impulses and they are function of the
Video Digital Pre-Processing (video processing).

If you have bad X AND Y BOARDS (SUS = Sustain) you may have a broken picture or a non functional plasma TV at all. (Overload).

BE CAREFUL if you have a defective panel , even when you have a looking good picture after changing one or all SUS BOARDS you have chances to
RE-damage the boards because of internal discarging in the panel.


IS ALL AT YOUR OWN RISK !!
(repairing SUS UNITS at components level is out of any order or possibilities due to HYBRAM/HYBRID Tech you can only replace complete boards units at once)

Suggestions:

- Get service manual and study it (CAREFULLY) !!!!
---------------------------------------------------------

- Test all voltages Coming out from supply and from SUS UNITS/BOARDS
- Capacitors "looking" good SAYS NOTING / REPLACING SAYS GOOD !!!
- TRY to replace the SUS BOARDS (once at a time) and look what happens
- If you can't do the repair alone then a qualified electronic is required,
even a friend with OSCILLOSCOPE !!! is good.
------------------

- CHECK BUFFERS (X-Y, UP-DOWN).
- CHECK BAD CONNECTIONS (FLAT CONNECTORS).

(I think is not a panel related problem. )
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vaio



Joined: 05 Nov 2009
Posts: 24

PostPosted: Thu Nov 26, 2009 11:03 am    Post subject: Reply with quote

YES , I will do that , there are valuable advices , THANKS !!!
But service manual is not available Sad , only one service for FUJITSU SIEMENS Plasma TV was been in Germany ,and that service bankrupt !!! This information say FUJITSU Representative in my country .
I also will try to replace places of that 2 pair IC, and see what happen with line .
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vaio



Joined: 05 Nov 2009
Posts: 24

PostPosted: Thu Nov 26, 2009 11:08 am    Post subject: Reply with quote

Service Manual for FUJITSU Myrica P42-2H on the internet dont exist !
I was search 10 days.....
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The_AntiRAM
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PostPosted: Thu Nov 26, 2009 3:01 pm    Post subject: Reply with quote

vaio wrote:
YES , I will do that , there are valuable advices , THANKS !!!
But service manual is not available Sad , only one service for FUJITSU SIEMENS Plasma TV was been in Germany ,and that service bankrupt !!! This information say FUJITSU Representative in my country .
I also will try to replace places of that 2 pair IC, and see what happen with line .


WHY CHANGING THOSE CHIPS ????('Question')

Are they HOT ???('Shocked')

Are they Cold ???

Without Service Manual or Any kind of Specific Technical Informations
i guess you have a HIGH GRADE HARD WORK with little chances of
success !!! ('Crying or Very sad')
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vaio



Joined: 05 Nov 2009
Posts: 24

PostPosted: Thu Nov 26, 2009 3:26 pm    Post subject: Reply with quote

Hello The_AntiRAM , thanks for your help .........

Quote:
Without Service Manual or Any kind of Specific Technical Informations
i guess you have a HIGH GRADE HARD WORK with little chances of
success !!! ('Crying or Very sad')

Yes I agree, but what can I do ??Sad

I think some of that Chips dont work ,and they are responsible for vertical black line ,I think if I change place maybe and line change .
So I can see is it panel OK .
In any case I will found second LOGIC MAIN BOARD .
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PostPosted: Thu Nov 26, 2009 4:06 pm    Post subject: Reply with quote

vaio wrote:
Hello The_AntiRAM , thanks for your help .........

Quote:
Without Service Manual or Any kind of Specific Technical Informations
i guess you have a HIGH GRADE HARD WORK with little chances of
success !!! ('Crying or Very sad')

Yes I agree, but what can I do ??Sad

I think some of that Chips dont work ,and they are responsible for vertical black line ,I think if I change place maybe and line change .
So I can see is it panel OK .
In any case I will found second LOGIC MAIN BOARD .



NO !!!! ('Confused')

PANEL IS THE LAST THING TO TEST !!!


FOLLOW THIS ORDER:

CHECK:

1)- SUPPLY LINES & SUPPLY UNIT !!!

2)- SUS BOARDS (I Think here is the problem) find one functional and try it one at a time

3)- BUFFERS (They may responsible for vertical lines)

3a)- CONNECTIONS BETWEEN BUFFERS & PANEL & OTHER PANELS/BOARDS
(Try to pull out and then in ... 2 or 3 times to clean contacts)


4)- PROCESSING DOMAINS BOARDS.

This is a correct way:
Checking Single Parts/Boards one at a time. ('Very Happy')

NOT.... 4 3 2 1 BUT Follow 1, 2, 3, 4. !!!('Very Happy')

.

Try first to find functional replacements parts for testing purposes
then follow the order aforementioned --------> 1 2 3 4 !!!

YOU HAVE NO OTHER WAYS TO DO IT YOURSELF !!! !!! !('Smile')
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The_AntiRAM
Guest





PostPosted: Thu Nov 26, 2009 4:23 pm    Post subject: Reply with quote

Anonymous wrote:
vaio wrote:
Hello The_AntiRAM , thanks for your help .........

Quote:
Without Service Manual or Any kind of Specific Technical Informations
i guess you have a HIGH GRADE HARD WORK with little chances of
success !!! ('Crying or Very sad')

Yes I agree, but what can I do ??Sad

I think some of that Chips dont work ,and they are responsible for vertical black line ,I think if I change place maybe and line change .
So I can see is it panel OK .
In any case I will found second LOGIC MAIN BOARD .



NO !!!! ('Confused')

PANEL IS THE LAST THING TO TEST !!!


FOLLOW THIS ORDER:

CHECK:

1)- SUPPLY LINES & SUPPLY UNIT !!!

2)- SUS BOARDS (I Think here is the problem) find one functional and try it one at a time

3)- BUFFERS (They may responsible for vertical lines)

3a)- CONNECTIONS BETWEEN BUFFERS & PANEL & OTHER PANELS/BOARDS
(Try to pull out and then in ... 2 or 3 times to clean contacts)


4)- PROCESSING DOMAINS BOARDS.

This is a correct way:
Checking Single Parts/Boards one at a time. ('Very Happy')

NOT.... 4 3 2 1 BUT Follow 1, 2, 3, 4. !!!('Very Happy')

.

Try first to find functional replacements parts for testing purposes
then follow the order aforementioned --------> 1 2 3 4 !!!

YOU HAVE NO OTHER WAYS TO DO IT YOURSELF !!! !!! !('Smile')



SORRY I FORGOT TO WRITE USERNAME IN MY PREVIOUS POST

('Laughing')
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vaio



Joined: 05 Nov 2009
Posts: 24

PostPosted: Fri Nov 27, 2009 6:19 pm    Post subject: Reply with quote

NICE , All clear !!!!!!!!!!!!!
I will try to found some Samsung service manual, because my Fujitsu is all Samsung inside, all boards are Samsung.

LJ41-02331A LJ92-01054A (E) left board
LJ41-02332A LJ92-01055A (F) right board
Logic board : pba no : LJ92-01270A/B/C/D/E/F/G/H/J/K/L/M
LJ41-03387A
ELECTRO MECHANIC LJ44-00092C
X-board LJ41-02758A
Y-Board LJ92-01200A
Y-Buffer LJ41-02760A (UP)
LJ41-02761A (DOWN)


Thanks so much The_AntiRAM ...
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vaio



Joined: 05 Nov 2009
Posts: 24

PostPosted: Fri Nov 27, 2009 7:07 pm    Post subject: Reply with quote

One question !!!!!
My Logic board : pba no : LJ92-01270A/B/C/D/E/F/G/H/J/K/L/M
Pba rev : A2
LJ41-03387A

I found : pba no : LJ92-01270A/B/C/D/E/F/G/H/J/K/L/M
Pba rev : A2
LJ41-03387A

All marks is 100% same ,only K and J are not !!!!
Is it compatible ???????????

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