Question about Toshiba 50H72 50" Rear Projection Television

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Convergance issue still exists

Hi still have a convergance issue with t.v went into service mode and ran a self diagnostic and it can up with a qh401"ng" on the bus cont part of the self diagnostic should i just scrap t.v. or is thier going to be more of this to come as toshiba has a terrible track record for convergance issues. Have already changed out the ic chips and made no difference and checked all resistors all seem good.could the blue light pot be going as it's the only one that i cannot adjust up/down thier is still a bow effect in the t.v .Starts in the middle of the top screen and midlle in the bottom of the screen so just getting frustrated and not sure what else to do thanks for all the help that has come in so far P.S. have a service manual to help me alog thanks for listening maybe can pin point where Qh401 maybe

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Did you ever solve this?
v_incent_mills@hotmail.com
I have the same problem with mine.

Posted on Mar 25, 2008

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Samsung tv model # HCP4363WX Ghosting


The convergence board that you replaced will not correct the issue that your describing as your model has the convergence amp circuits located on the Deflection board. You would need the deflection board which is available at the following link. It also has a picture of the board which is in your model its the large board on the right with the Flyback and both Convergence ICs on it.
http://servicemanuals.vstore.ca/product_info.php/pName/p59a-pwr-def-board/cName/samsung-parts

Dec 16, 2009 | Televison & Video

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Convergence problem


reset your tv with defaults settings.f chip and resstor blown then it need change.

Jan 06, 2009 | Philips 55PP9401 55" Rear Projection...

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Toshiba 42h82


1. ENTERING TO SERVICE MODE
MUTE
S
(Service mode display)
3) While pressing the MUTE button,
press MENU button on TV set.
2) Press MUTE button
again to keep pressing.
1) Press MUTE button twice
on Remote Control.
2. DISPLAYING THE ADJUSTMENT MENU
1) Press MENU button on TV.
Adjustment mode
Press
Press
Service mode
Item
S Data
3. KEY FUNCTION IN THE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
Screen adjustment mode ON/OFF: TV (ANT)/VIDEO button (on TV)
Selection of the adjustment items : Channel s/t (on TV or Remote)
Change of the data value : Volume s/t (on TV or Remote)
Adjustment menu mode ON/OFF : MENU button (on TV)
Initialization of the memory (QA02) : RECALL+Channel button on TV (s)
Initialization of the self diagnostic data: RECALL+Channel button on TV (t)
“RCUT” selection : 1 button
“GCUT” selection : 2 button
“BCUT” selection : 3 button
“SCNT” selection : 4 button
“SCOL” selection : 5 button
“TNTC” selection : 6 button
Convergence adj : 7 button
Self diagnostic display : 9 button

Oct 21, 2008 | Televison & Video

1 Answer

Color issues


yes try this above links

please check out this links

for convergence board ics reparing it your self

http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm

and for convergence settings

http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html

thanks.

Oct 10, 2008 | Samsung HCM5525W 55" Rear Projection...

1 Answer

Check Factory Data after fixing convergence and resistors


Plugs on the chassis coming from keyboard and side video input are switched (they have same plug)
redoo convergence save and auto focus in factory mode after switching plugs

May 02, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Convergence adjustment @ 52MH84


press mute on the remote then while pressing mute press menu on the set.then you navigate with the instructions below.
3. KEY FUNCTION IN THE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
Screen adjustment mode ON/OFF: TV (ANT)/VIDEO button (on TV)
Selection of the adjustment items : Channel s/t (on TV or Remote)
Change of the data value : Volume s/t (on TV or Remote)
Adjustment menu mode ON/OFF : MENU button (on TV)
Initialization of the memory (QA02) : RECALL+Channel button on TV (s)
Initialization of the self diagnostic data: RECALL+Channel button on TV (t)
“RCUT” selection : 1 button
“GCUT” selection : 2 button
“BCUT” selection : 3 button
“SCNT” selection : 4 button
“SCOL” selection : 5 button
“TNTC” selection : 6 button
Convergence adj : 7 button
Self diagnostic display : 9 button

Jan 21, 2008 | Televison & Video

1 Answer

Convergence service mode


Hello,
I don't know how to deal with the power settings part but the convergence service mode is "Mute, 1, 8, 3, power".

Jan 03, 2008 | Samsung PCN5425R 54" Rear Projection...

1 Answer

Sony kp-43ht20 geometry issue.


You may be setting your self up for a major headache. Trying to set convergence requires a professional pattern generator. There are also multiple phase adjustments to prevent linear drift of settings. Please spare yourself, take unit to a professional service!

Nov 21, 2007 | Sony KP-57WS520 57" Rear Projection...

2 Answers

Convergence settings


Key Functions
7,8,9 = select R, G or B
+100,0,PRE-CH = mute R, G or B
INFO = test/normal
4 = shifts from point to line, grid move
2 = restore factory
SOURCE = H/V select
ADD/DEL = Save
S.MODE = exit
MUTE = cursor forward
P.MODE = cursor back
Volume +/- = moves convergence left or right
Channel +/- = moves convergence up or down
1 = zero's all convergence settings (ugly!)
U/D/L/R = move cursor
SELF FOCUS = saves the convergence adjustment - do before exiting

Good luck.  I let a sub-standard service joint work on mine - they replaced the OEM chips with a higher wattage equivalent, and I've had nothing but problems ever since.

Oct 11, 2007 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

PT-47WX49 47 in. Rear Projectiopn Problem:


get in to the eprom setings and see if any adjustments have changed.the service manual can be gotton at servicemanuals.net

Aug 29, 2007 | Panasonic PT-47WX49 47" Rear Projection...

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