LCD TV and Monitor basic troubleshooting guides - Page 13

**thoma** · 03-11-2016, 02:52 PM

With pleasure!
regards to all members!!!
thoma!

**thoma** · 03-12-2016, 03:49 AM

http://****************/dc_dc/

http://****************/ic_power/

JohnT07 · 03-15-2016, 06:59 AM

Hi I'm new to the site and hope I'm in the right place to ask a few questions.

My LG tv (42LD490-ZB) wont power up, when it's turned on the power indicator pulses I can only describe as continually going from dim to bright every few seconds, I am considering replacing the power board but is that the best option any advice would be most welcome.

Thanks John.

**thoma** · 03-17-2016, 06:31 AM

Samsung ue40F6400ak SMPS Trafo defect

https://www.youtube.com/watch?v=oC1NfvID2-M

5V available Relais klicking no function thats what described in this video
The coils are interrupt from the transformer!
But where can buy this transformer?
regards thoma!

**thoma** · 03-30-2016, 08:54 AM

http://tel-spb.ru/remont-tv-lcd/

http://televid-sib.ru/

http://www.arizanotlari.com/

**budm** · 03-31-2016, 10:17 AM

SAMSUNG service manual, etc.
ftp://helpedia.com/pub/temp/datasheets/monitors/
Info provided by THOMA, thanks!

**thoma** · 04-08-2016, 01:52 AM

LG SMPS schematics very fine!

http://televid-sib.ru/index.php?board=165.0

Registration required!!

**budm** · 04-15-2016, 12:17 PM

LG LED backlights: LATWT470RELZK
http://www.badcaps.net/forum/showthr...209#post649209

http://www.aliexpress.com/wholesale?...=LATWT470RELZK

**budm** · 04-20-2016, 12:50 PM

LED DESIGN FORUM: Avoiding thermal runaway when driving multiple LED strings (MAGAZINE)
Driving LEDs in parallel.
http://www.ledsmagazine.com/articles...-magazine.html

**thoma** · 05-01-2016, 06:33 AM

http://www.sahy.cz/sahy/eshop/5-1-LE...-LED-backlight

spare parts LED

**thoma** · 05-02-2016, 01:02 PM

http://advancedreworks.com/blog/refl...al-information

All around BGA Chips!

regards thoma!

**budm** · 05-03-2016, 03:50 PM

SAMSUNG backlights LEDs: Not sure if it is any good.
SPBWH1332S1BVC1BIB
http://www.aliexpress.com/item/SAMSU...2-02a437e85ed5

**budm** · 05-13-2016, 03:51 PM

Caution when testing LED with protection diode using non-current limiter power supply, you can damage the LED internal Diode.
You can attach Amp meter with power source so you can see what current will flow when wrong polarity is applied to the LED with internal protection diode.
You can easily make constant current source using LM317.

**budm** · 05-13-2016, 05:26 PM

Lg latwt470relzk led

**budm** · 05-13-2016, 09:24 PM

How I remove bad LEDs from the strip.
I crush the white plastic body of the LED first then scrape off the rest to expose the two solder pads of the LED, then I use flux and add solder to those two pads using wide tip 60W iron and the two pads just slide off the board.
I had to do 38 of them for the SAMSUNG 40" TV, 12 of the LEDS were shorted and 2 were open. It went pretty fast doing this way, I did try hot air and hair dryer method but takes too long..

Maha · 05-16-2016, 07:58 PM

Thank you very much, excellent post!!!!

**thoma** · 05-28-2016, 02:07 PM

http://forum.iwenzo.de/samsung-ue32f...z--t62430.html

http://advancedreworks.com/forum/sho...oting-587.html

http://www.ohmsupplies.co.uk/epages/...roducts/KIT408

http://www.ohmsupplies.co.uk/epages/...roducts/KIT394

**thoma** · 05-30-2016, 04:21 AM

http://www.electronica-pt.com/esquem...raining-29695/

Training Samsung F-Serie
--------------------------------------------------------------------------

http://www.electronica-pt.com/esquem...aa-u8ab-28964/

http://www.electronica-pt.com/esquem...is-u8dc-28959/

http://www.electronica-pt.com/esquem...is-u8dc-28958/

Schematics Samsung H-Serie

**thoma** · 05-31-2016, 08:44 AM

http://pcook.ru/related/tz8U3abVxcU

**thoma** · 06-06-2016, 10:12 AM

vestal software updating pdf files

http://www.tv.quuq.org/forum/index.php?topic=9562.0

Registration required!!

03-11-2016, 02:52 PM	#241
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides With pleasure! regards to all members!!! thoma!

03-12-2016, 03:49 AM	#242
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides http://**************/dc_dc/ http://**************/ic_power/

03-15-2016, 06:59 AM	#243
JohnT07 New Member Join Date: Mar 2016 City & State: Wolverhampton My Country: England I'm a: Knowledge Seeker Posts: 2	Re: LCD TV and Monitor basic troubleshooting guides Hi I'm new to the site and hope I'm in the right place to ask a few questions. My LG tv (42LD490-ZB) wont power up, when it's turned on the power indicator pulses I can only describe as continually going from dim to bright every few seconds, I am considering replacing the power board but is that the best option any advice would be most welcome. Thanks John.

03-17-2016, 06:31 AM	#244
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides Samsung ue40F6400ak SMPS Trafo defect https://www.youtube.com/watch?v=oC1NfvID2-M 5V available Relais klicking no function thats what described in this video The coils are interrupt from the transformer! But where can buy this transformer? regards thoma!

03-30-2016, 08:54 AM	#245
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides http://tel-spb.ru/remont-tv-lcd/ http://televid-sib.ru/ http://www.arizanotlari.com/

03-31-2016, 10:17 AM	#246
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: 39,206	Re: LCD TV and Monitor basic troubleshooting guides SAMSUNG service manual, etc. ftp://helpedia.com/pub/temp/datasheets/monitors/ Info provided by THOMA, thanks! __________________ 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

04-08-2016, 01:52 AM	#247
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides LG SMPS schematics very fine! http://televid-sib.ru/index.php?board=165.0 Registration required!!

04-15-2016, 12:17 PM	#248
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: 39,206	Re: LCD TV and Monitor basic troubleshooting guides LG LED backlights: LATWT470RELZK http://www.badcaps.net/forum/showthr...209#post649209 http://www.aliexpress.com/wholesale?...=LATWT470RELZK

05-01-2016, 06:33 AM	#250
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides http://www.sahy.cz/sahy/eshop/5-1-LE...-LED-backlight spare parts LED

05-02-2016, 01:02 PM	#251
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides http://advancedreworks.com/blog/refl...al-information All around BGA Chips! regards thoma!

05-03-2016, 03:50 PM	#252
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: 39,206	Re: LCD TV and Monitor basic troubleshooting guides SAMSUNG backlights LEDs: Not sure if it is any good. SPBWH1332S1BVC1BIB http://www.aliexpress.com/item/SAMSU...2-02a437e85ed5

05-16-2016, 07:58 PM	#256
Maha New Member Join Date: May 2016 City & State: Managua My Country: Nicaragua I'm a: Knowledge Seeker Posts: 2	Re: LCD TV and Monitor basic troubleshooting guides Thank you very much, excellent post!!!!

05-28-2016, 02:07 PM	#257
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides http://forum.iwenzo.de/samsung-ue32f...z--t62430.html http://advancedreworks.com/forum/sho...oting-587.html http://www.ohmsupplies.co.uk/epages/...roducts/KIT408 http://www.ohmsupplies.co.uk/epages/...roducts/KIT394

05-30-2016, 04:21 AM	#258
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides http://www.electronica-pt.com/esquem...raining-29695/ Training Samsung F-Serie -------------------------------------------------------------------------- http://www.electronica-pt.com/esquem...aa-u8ab-28964/ http://www.electronica-pt.com/esquem...is-u8dc-28959/ http://www.electronica-pt.com/esquem...is-u8dc-28958/ Schematics Samsung H-Serie

05-31-2016, 08:44 AM	#259
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides http://pcook.ru/related/tz8U3abVxcU

06-06-2016, 10:12 AM	#260
thoma Badcaps Veteran Join Date: Sep 2012 City & State: Germany My Country: Germany I'm a: Knowledge Seeker Posts: 266	Re: LCD TV and Monitor basic troubleshooting guides vestal software updating pdf files http://www.tv.quuq.org/forum/index.php?topic=9562.0 Registration required!!

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