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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8 Answers

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...

2 Answers

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)
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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

Hitachi screen went blank?


1) Consult service manual for details.........procedure issues?
Sounds like the digital convergence unit got confused....
You may have to start all over again at default....
2) When converging a PTV, less is better ( adjustments) unless
you are positive adjustments will yield some improvement..
3) Info source = www.HitachiServiceUSA.com

Please rate this solution.............................

Nov 03, 2007 | Hitachi 43FDX01B TV

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