Badcaps.net Forum
Go Back   Badcaps Forums > Electronics Theory and Troubleshooting > Troubleshooting TVs and Video Sources
Register FAQ Members List Social Groups Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 01-23-2013, 10:27 AM   #1
budm
Badcaps Veteran
 
Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
I'm a: Knowledge Seeker
Posts: 11,253
Default LCD TV and Monitor basic troubleshooting guides

I cannot find the original post so this is the new post that I will have it liked to my signature file. It will be good if it can be on the sticky.

Notes: When make voltage measurement in the DEADLY Primary (HOT) side, the negative leg of the LARGE filter cap will be the ground ref.
The chassis will be the ground ref for the Secondary (COLD) side.
You should at least plug the unit you are working on into the GFCI outlet for safety.
__________________
Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956

Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999

Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl

Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/

TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809

Last edited by budm; 01-23-2013 at 11:54 AM..
budm is offline   Reply With Quote
Old 01-23-2013, 11:52 AM   #2
Beowulf
Senior Member
 
Join Date: Dec 2012
City & State: Newark, NJ
My Country: USA
I'm a: Knowledge Seeker
Posts: 138
Default Re: LCD TV and Monitor basic troubleshooting guides

Thanks Bud M.

Have not seen it yet and I already like it.
Beowulf is offline   Reply With Quote
Old 01-23-2013, 02:06 PM   #3
Steve.B
Member
 
Join Date: Dec 2008
City & State: North Devon
My Country: UK
Line Voltage: 230v AC 50Hz
I'm a: Knowledge Seeker
Posts: 73
Default Re: LCD TV and Monitor basic troubleshooting guides

Great job Bud M. Very handy and informative guides. I am sure these will be of great use to a lot of people. Certainly agreed that these should be 'stickied'.
Steve.B is offline   Reply With Quote
Old 01-23-2013, 03:55 PM   #4
Beowulf
Senior Member
 
Join Date: Dec 2012
City & State: Newark, NJ
My Country: USA
I'm a: Knowledge Seeker
Posts: 138
Default Re: LCD TV and Monitor basic troubleshooting guides

Oops forgot to say I vote for this to be stickied.
Beowulf is offline   Reply With Quote
Old 01-23-2013, 04:02 PM   #5
tom66
Badcaps Veteran
 
Join Date: Apr 2011
City & State: Leeds (University)
My Country: UK
Line Voltage: 230Vac 50Hz
I'm a: Student Tech
Posts: 23,130
Default Re: LCD TV and Monitor basic troubleshooting guides

Excellent guides. Sticky please! Along with the factory reset guide of Randtek's that got buried.
__________________
Don't PM me for help and support. Questions belong on the public forum.

57 LED/LCD TVs, 5 monitors, 16 plasma TVs, and 2 AVR 6.1 amplifiers saved from the dump!
Totally free service manuals database: http://www.toms-service-manuals.com/ (Contact me for requests or contributions.)

I have successfully fixed (from best --> worst build quality):
7 Panasonic LCD/Plasmas, 1 NEC Plasma, 2 Yamaha HTS, 4 Sharp LCDs, 4 Toshiba LCDs, 5 Philips Plasma/LCD, 1 Hitachi Plasma, 7 LG LCD/Plasma, 13 Samsung LED/LCD/Plasma, 1 Thomson Plasma, 1 Atec LCD, 1 Hanspree LCD, 1 Xerox LCD, 1 Harwa LCD, 2 Proview LCD, 2 Hyundai LCD, 1 "Onn" LCD, 1 Grundig LCD, 1 Dell LCD, 1 iiyama LCD, 1 Acer LED, 1 Logik LCD, 6 Bush LCDs, 15 Vestel LCDs
tom66 is online now   Reply With Quote
Old 01-23-2013, 04:26 PM   #6
budm
Badcaps Veteran
 
Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
I'm a: Knowledge Seeker
Posts: 11,253
Default Re: LCD TV and Monitor basic troubleshooting guides

Yes, the stickied for the factory reset too, that is really good one.
budm is offline   Reply With Quote
Old 01-23-2013, 05:58 PM   #7
retiredcaps
Badcaps Veteran
 
Join Date: Apr 2010
City & State: Canada
Posts: 8,267
Default Re: LCD TV and Monitor basic troubleshooting guides

I'll ask ratdude747 (moderator) to make this a sticky. He's a reasonable person to work with and quick to respond when he's not busy with school.

This will hopefully decrease the frequent questions and workload for everyone.
__________________
--- begin sig file ---

If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

Please do not post inline and offsite as they slow down the loading of pages.

--- end sig file ---

Last edited by retiredcaps; 01-23-2013 at 06:02 PM..
retiredcaps is offline   Reply With Quote
Old 01-23-2013, 07:47 PM   #8
ratdude747
Rebooting...
 
ratdude747's Avatar
 
Join Date: Nov 2008
City & State: New Albany, IN
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Student Tech
Posts: 12,354
Send a message via Yahoo to ratdude747 Send a message via Skype™ to ratdude747
Default Re: LCD TV and Monitor basic troubleshooting guides

Quote:
Originally Posted by retiredcaps View Post
I'll ask ratdude747 (moderator) to make this a sticky. He's a reasonable person to work with and quick to respond when he's not busy with school.

This will hopefully decrease the frequent questions and workload for everyone.
BAM!

Thread stuck.
__________________


(Insert signature here)
ratdude747 is offline   Reply With Quote
Old 01-23-2013, 07:53 PM   #9
tom66
Badcaps Veteran
 
Join Date: Apr 2011
City & State: Leeds (University)
My Country: UK
Line Voltage: 230Vac 50Hz
I'm a: Student Tech
Posts: 23,130
Default Re: LCD TV and Monitor basic troubleshooting guides

Quote:
Originally Posted by ratdude747 View Post
BAM!

Thread stuck.
Is it possible to sticky this one, too?
http://www.badcaps.net/forum/showthread.php?t=24809
tom66 is online now   Reply With Quote
Old 01-24-2013, 10:42 AM   #10
tibimakai
Badcaps Veteran
 
Join Date: Jan 2012
City & State: Monrovia, CA
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 2,002
Default Re: LCD TV and Monitor basic troubleshooting guides

Excellent work Bud!!
May I ask you, if you could include in these documents, some pictures with the standby voltage area(or other important areas of the device), the most important ICs(and what they do), how do we know if the PS should have 166V or 450V.
tibimakai is offline   Reply With Quote
Old 01-24-2013, 11:28 AM   #11
Foppel
New Member
 
Join Date: Jan 2013
City & State: NRW
My Country: Germany
Line Voltage: 230VAC 50Hz
I'm a: Hobbyist Tech
Posts: 14
Default Re: LCD TV and Monitor basic troubleshooting guides

Hi Budm i like your cats Thanks for the Links. This page also helps me a lot: http://youclickspk.blogspot.de/p/tes...l#.UQF8yGf3G71

cheers - Foppel
Foppel is offline   Reply With Quote
Old 01-27-2013, 06:25 PM   #12
budm
Badcaps Veteran
 
Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
I'm a: Knowledge Seeker
Posts: 11,253
Default Re: LCD TV and Monitor basic troubleshooting guides

This is SONY training manual for the T-CON.
Attached Files
File Type: pdf SONY T-CON_training_manual.pdf (854.1 KB, 1901 views)
File Type: pdf SONY_LCD_TV_TCON_Troubleshooting.pdf (1.52 MB, 1888 views)
budm is offline   Reply With Quote
Old 01-29-2013, 09:11 AM   #13
ohmmy
Senior Member
 
Join Date: Jan 2013
City & State: MA
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 145
Default Re: LCD TV and Monitor basic troubleshooting guides

Wow great little tutorial budm. Explains things neatly and in correct sequence. Great guide!
ohmmy is offline   Reply With Quote
Old 02-02-2013, 10:57 AM   #14
coxtel81
New Member
 
Join Date: Feb 2013
City & State: GALATI
My Country: ROMANIA
I'm a: Knowledge Seeker
Posts: 2
Default Re: LCD TV and Monitor basic troubleshooting guides

Excellent work
coxtel81 is offline   Reply With Quote
Old 02-06-2013, 02:36 PM   #15
dejesus
Member
 
Join Date: Jan 2013
City & State: orlando, florida
My Country: usa
I'm a: Knowledge Seeker
Posts: 83
Default Re: LCD TV and Monitor basic troubleshooting guides

This inf. is great. A lot to learn in this side. hard to find inf. like this. Great!!!
dejesus is offline   Reply With Quote
Old 02-14-2013, 10:24 PM   #16
budm
Badcaps Veteran
 
Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
I'm a: Knowledge Seeker
Posts: 11,253
Default Re: LCD TV and Monitor basic troubleshooting guides

TFT voltages:
Sanyo LCD display training manual.
AS15G (EC5575) spec

Washed out picture:
http://www.badcaps.net/forum/showthr...mma#post304275
Attached Files
File Type: pdf TFT-LCD voltages.pdf (246.1 KB, 1475 views)
File Type: pdf sanyo_principle_lcd_display_training_manual.pdf (949.2 KB, 1391 views)
File Type: pdf AS15G_EC5575.pdf (653.6 KB, 1133 views)

Last edited by budm; 02-14-2013 at 10:38 PM..
budm is offline   Reply With Quote
Old 03-10-2013, 08:46 AM   #17
rukmani
New Member
 
Join Date: Mar 2013
City & State: bihar
My Country: india
I'm a: Knowledge Seeker
Posts: 2
Default Re: LCD TV and Monitor basic troubleshooting guides

thank sir good work...................
rukmani is offline   Reply With Quote
Old 04-07-2013, 04:20 PM   #18
Ahakim
Member
 
Join Date: Apr 2013
City & State: charleston, WVa
My Country: USA
Line Voltage: 117VAC 60Hz
I'm a: Hobbyist Tech
Posts: 43
Default Re: LCD TV and Monitor basic troubleshooting guides

Need full Schematic of LG 32LD330 model. Who can help???...
Ahakim is offline   Reply With Quote
Old 04-09-2013, 07:27 PM   #19
HerbTech1
New Member
 
Join Date: Apr 2013
City & State: Hamilton, ON
My Country: Canada
I'm a: Knowledge Seeker
Posts: 2
Default Re: LCD TV and Monitor basic troubleshooting guides

Thank you very much for this post. Lots of good reading ahead.
HerbTech1 is offline   Reply With Quote
Old 04-22-2013, 01:11 PM   #20
sinaaa
New Member
 
Join Date: Apr 2013
City & State: damascus
My Country: syria
I'm a: Knowledge Seeker
Posts: 1
Default Re: LCD TV and Monitor basic troubleshooting guides

Need full Schematic of samsung ln32c450e1d model. Who can help?
sinaaa is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 04:49 PM.


Badcaps.net Technical Forums 2003 - 2014
Powered by vBulletin ®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.