TV Repair Reference Library

[rafi.dmm]

Re: TV Repair Reference Library

sony led tv klv modal 32R402A fault symtom no standby led not glove 1.2v ok, 1.5v ok, 5.1v ok, and
panel 12v not ok mosfet input 19v ok output not ok thair is no shart circuit. aney one solve
prablam please.

[dvsguy]

Re: TV Repair Reference Library

hey guys have a panasonic 42 inch viera TH-L42U20Z with 7 red blinking lights of doom, can anyone help me with this ?

[bozharry]

Re: TV Repair Reference Library

Hi i have a finlux 32"That keeps turning on and off by its self.From what i gather is that i need a firmware update?Heres the model number 32LCDHDS-SAT.Have no idea where to get firmware.Even if someone knows What Vestel cross reference this set is.Any help greatly accepted.

[estherbook]

Re: TV Repair Reference Library

I really need some help, my TV suddenly has no image!




_________________________________
Black Cocktail Dresses

[vovay45]

Re: TV Repair Reference Library

Pioneer PDP-42-A3HD
When I turn power ON
1.Green light is ON
2.I hear some relay switching on and off but nothing on display and no control.

[Kom]

Re: TV Repair Reference Library

Hello there ..

AS15 gamma processor is usually broken.

What could be the reason for this?

SCL / SDA signal irregularities? Did you study the effect of high frequency? Is the workload?

It's a question a lot in my head. If the answers come from your friends, I'll be happy.
Please provide a description theorists ...
Thank you ..

[mmartell]

Re: TV Repair Reference Library

Have a Samsung ln40A530p1fxza. Showing solarized colors, even the menu letters are messed up. Tried all inputs. Did factory reset in service menu, when tried to calibrate HDMI it always said "Failed". Yesterday tried to watch a football game and as I was browsing games, for a second the picture came back normal but then switched back to solarized colors. Do you guys think it is the T-Con board or a bad cable?

Check other thread you posted in regarding this. You have a defective ic on your tcon board. Replace it or get it serviced.

[Luighi]

Re: TV Repair Reference Library

Have a Samsung ln40A530p1fxza. Showing solarized colors, even the menu letters are messed up. Tried all inputs. Did factory reset in service menu, when tried to calibrate HDMI it always said "Failed". Yesterday tried to watch a football game and as I was browsing games, for a second the picture came back normal but then switched back to solarized colors. Do you guys think it is the T-Con board or a bad cable?

[nyak54]

Re: TV Repair Reference Library

Hiya all.
New to this site and just browsing, for now.

[alancilia]

Re: TV Repair Reference Library

Hi
I have been using this forum for quite some time now , and I can say you are an amazing Community .

These last few weeks I have been writing a Fault Database for the community
Everyone can instantly add new categories and faults entries to share with others

You can search the database by category , fault description , or diagnosis / fix .
I know I still have some minor bugs I will be working on when I find some free time
Here is the url
http://fault-database.host56.com/Faults
Register and login.
Any suggestions are welcome.

[Peter Chiu]

Re: TV Repair Reference Library

Update:

Caution: Unprotect a circuit is dangerous only for temporally troubleshooting.

AAT1100 pin 8 short to ground, to remove protection.
AAT1107 pin 15 short to ground, to remove protection.
AT1380 short pin 2 to ground, to remove protection.
AT1741 short pin 15 to ground, to remove protection.
BA9741 short pin 15 to ground, to remove protection.
BA9743 short pin 15 to ground, to remove protection.
BD9884 short pin17 and pin 18 and ground the capacitance.
BIT3101 Cavitate pin 2 and pin 15 pins (suck out the solder, let the pins float.)
BIT3102 Cavitate pin 5
BIT3105 Cavitate pin 4
BIT3106 Cavitate pin 4 and pin 27
BIT3107 Cavitate pin 4
BIT3193 Cavitate pin 15 pin 3
FA3629 short external capacitor over pin 15 and pin 16
FA3630 short pin 7 and pin 10 to ground, to remove protection.
KA7500 short pin 1 and pin 16 to ground, to remove protection.
MB3775 short pin 15 to ground, to remove protection.
MP1038EY Connecting wire pin 11 and pin 2 ,to remove protection.
OZ960, OZ962, OZ1060 short pin 2 to ground, to remove protection.
OZ964 short pin 2 to ground, to remove protection. Tested 3/2015 on Sanyo
DP42848
OZ965 short pin 4 and pin 6 to ground, to remove protection.
OZ9938 1. pin 3 short to ground. 2. pin 6 short to ground. 3. pin 7 short to ground,
remove the grounding resistance ,to remove protection.
OZ9RR short pin 8 and pin 9 to ground, to remove protection.
TL1451 short pin 15 to ground, to remove protection.
TL494 short pin 1 and pin 16 to ground. If not work, short pin 4 to ground.
TL5001 short pin 5 to ground ,to remove protection.
TL5451 short pin 15 to ground, to remove protection.

[Peter Chiu]

Re: TV Repair Reference Library

How to by pass LCD screen protection?

Screen Black (no display) failure usually encounter some display only one lamp or circuit protection. For easy troubleshooting , we need to remove (by pass) the protection.


OZ9938 remove protection circuit:
1. pin 3 short to ground
2. pin 6 short to ground
3. pin 7 short to ground, remove the grounding resistance ,to remove protection.

MP1038EY connecting wire pin 11 and pin 2 ,to remove protection.

TL5001 short pin 5 to ground ,to remove protection.

TL1451 short pin 15 to ground, to remove protection.

TL5451 short pin 15 to ground, to remove protection.

BA9741 short pin 15 to ground, to remove protection.

BA9743 short pin 15 to ground, to remove protection.

MB3775 short pin 15 to ground, to remove protection.

AT1741 short pin 15 to ground, to remove protection.

AT1380 short pin 2 to ground, to remove protection.

KA7500 short pin 1 and pin 16 to ground, to remove protection.

TL494 short pin 1 and pin 16 to ground. IF not work, short pin 4 to ground.

FA3629 short external capacitor over pin 15 and pin 16

FA3630 short pin 7 and pin 10 to ground, to remove protection.

OZ960 OZ962 short pin 2 to ground, to remove protection.

OZ965 short pin 4 and pin 6 to ground, to remove protection.

OZ9RR short pin 8 and pin 9 to ground, to remove protection.



BIT3101 Cavitate pin 2 and pin 15 pins (suck out the solder, let the pins float.)

BIT3102 Cavitate pin 5
BIT3105 Cavitate pin 4
BIT3106 Cavitate pin 4 and pin 27

BIT3107 Cavitate pin 4

BIT3193 Cavitate pin 15 pin 3

AAT1100 pin 8 short to ground, to remove protection.

AAT1107 pin 15 short to ground, to remove protection.


BD9884 short pin17 and pin 18 on the ground capacitance.


Can someone use spreadsheet make it better?

[anmol]

Re: TV Repair Reference Library

Resoldar LEDs Backlight

Regards

[Bills86e]

Re: TV Repair Reference Library

Check the PS D/C voltages, values for the output wire connectors are stamped on board.


STICKIES ARE FOR READ> Post your Questions in the forum, not here! <Thanks.>

[wanzar]

Re: TV Repair Reference Library

toshiba mod#35A44 won't turn on but power light keeps flashing.

any suggestions out there?

[wanzar]

Re: TV Repair Reference Library

toshiba mod#35A44 won't turn on but power light keeps flashing.

[mikecastillo]

Re: TV Repair Reference Library

I'm learning, so please bear with me. Does the diagnostic for LCD tv work for LED tv.?
Trying to diagnose Proscan model PLDED3992A.

[dkneyle]

Re: TV Repair Reference Library

Yes, I agree. I only got back into the hobby of repairing TVs about a year ago and was getting up to speed with the flat screen technology. I kept thinking I was missing something. I'd download a SM and couldn't find the schematics. Then eventually the penny dropped; no one except us enthusiasts goes down below board level. I've repaired a few power supplies by diagnosis (going beyong simply changing out the electros) but otherwise I've always had to go for board changeovers for the rest.

[videobruce]

Re: TV Repair Reference Library

Ten and more years ago, I don't remember not having full schematic and a parts list with almost any SM I bought. Now you don't seem to get either.

[dkneyle]

Re: TV Repair Reference Library

Sadly, because the typical TV tech only works down to board level, I find that getting the detail you are looking for always remains challenging. Many of the clever chaps on this Forum have often identified the typical components that fail and can give life again to Y-Sus and Z-Sus boards again, but most often it's a change-out/change-over situation.