Comments on: LCD TV Backlights Overheating transformer on Samsung LN40B550K1F https://jestineyong.com/lcd-tv-backlights-overheating-transformer-on-samsung-ln40b550k1f/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Tue, 21 May 2013 03:15:05 +0000 hourly 1 https://wordpress.org/?v=5.4.24 By: Jestine Yong https://jestineyong.com/lcd-tv-backlights-overheating-transformer-on-samsung-ln40b550k1f/comment-page-1/#comment-192387 Tue, 21 May 2013 03:15:05 +0000 https://www.jestineyong.com/?p=4885#comment-192387 In reply to Belew.

Hi Belew,

If all other output don't have sound most probably the mainboard MCU/Flash Rom could have problem.

Jestine

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]]> By: Belew https://jestineyong.com/lcd-tv-backlights-overheating-transformer-on-samsung-ln40b550k1f/comment-page-1/#comment-192369 Mon, 20 May 2013 14:00:48 +0000 https://www.jestineyong.com/?p=4885#comment-192369 my name is belew i am ATM machine technician and also repairing power supplies, one of my customer bought Samsung LCD TV,model:ps43e470,41 inch, after it working for one month its sound output stoped,i reset it and tried to check all setting its OK but still it has no sound for temporary solution i took sound directly from the receiver to external speaker and also i suspect the problem is at main board tried to check components by digital multimeter all are good except ICs.
pls help me my personnel email is belew_2005@yahoo.com.
best regards
belew

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]]> By: Jestine Yong https://jestineyong.com/lcd-tv-backlights-overheating-transformer-on-samsung-ln40b550k1f/comment-page-1/#comment-191971 Tue, 07 May 2013 02:48:23 +0000 https://www.jestineyong.com/?p=4885#comment-191971 In reply to zed.

Hi Zed,

Thanks to Dave too for creating the video.

Jestine

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]]> By: zed https://jestineyong.com/lcd-tv-backlights-overheating-transformer-on-samsung-ln40b550k1f/comment-page-1/#comment-191970 Tue, 07 May 2013 02:46:11 +0000 https://www.jestineyong.com/?p=4885#comment-191970 nice added info on troubleshooting technique. thanks.
Zed

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]]> By: Jestine Yong https://jestineyong.com/lcd-tv-backlights-overheating-transformer-on-samsung-ln40b550k1f/comment-page-1/#comment-191949 Tue, 07 May 2013 02:03:45 +0000 https://www.jestineyong.com/?p=4885#comment-191949 In reply to K V MANI KUMAR.

Hi KV,

If the display is permanent one vertical or horizontal lines then it can't be repaired. If it deals with display problem then you can try to repair provided if you can find the lcd controller ic part. Inverter and SMPS of LCD TVs can be repaired and you need to visit this link https://www.jestineyong.com/resources-2/ to look for the LCD TV repair section. If you have no expereince in electronics repair I suggest that you get the Testing Electronic Components ebook first.

Jestine

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]]> By: Jestine Yong https://jestineyong.com/lcd-tv-backlights-overheating-transformer-on-samsung-ln40b550k1f/comment-page-1/#comment-191944 Tue, 07 May 2013 01:57:26 +0000 https://www.jestineyong.com/?p=4885#comment-191944 In reply to nambafuram.

Hi Nambafurm,

Thanks but sorry I don't repair phone.

Jestine

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]]> By: nambafuram https://jestineyong.com/lcd-tv-backlights-overheating-transformer-on-samsung-ln40b550k1f/comment-page-1/#comment-191801 Mon, 06 May 2013 17:37:26 +0000 https://www.jestineyong.com/?p=4885#comment-191801 I like your website and it has helped to prosper in my studies, do u also repair phones I will be grateful if you reply me.thanks

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]]> By: K V MANI KUMAR https://jestineyong.com/lcd-tv-backlights-overheating-transformer-on-samsung-ln40b550k1f/comment-page-1/#comment-191772 Mon, 06 May 2013 16:09:19 +0000 https://www.jestineyong.com/?p=4885#comment-191772 Sir Can we repair LCD Panel ( SCREEN ) Is there
any methods . what about Inverter of LCD TV ? How to check SMPS of SAMSUNG 32" LCD. These are included in your Training ?

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