Comments on: Milky Display Necessitated Panel Replacement In Samsung LED TV-UA43N5005AK

By: Parasuraman S

Parasuraman S — Wed, 08 Jul 2026 23:21:45 +0000

In reply to Muykit.

Yes, very true! All tall claims on specifications need not be true and consumers are seldom bothered about it too!

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By: Parasuraman S

Parasuraman S — Wed, 08 Jul 2026 23:20:03 +0000

In reply to MP.

Good deduction and suggestion!

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By: Muykit

Muykit — Wed, 08 Jul 2026 05:20:57 +0000

Do we ever care to verify if the specifications given by manufacturers about their consumer products is true. The 43 inch tv, as claimed needs only 75 watts of power to run. Some other tv brands its size may call for over 100 watts to operate

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By: MP

MP — Tue, 07 Jul 2026 09:45:53 +0000

My assumption is, the 20 volts the PWM should get as Vcc is from the power stepdown transformer. So either the transformer is playing games here or some component before the transformer is robbing some of the transformers nearly 300 volts input. Now the reduced transformers input voltage makes the transformer unable to creat 20 Vcc for PWM. Only the inadequate 7 volts is what the transformer can raise for the PWM, rendering it ineffective and so stalling other operations

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By: Parasuraman S

Parasuraman S — Mon, 06 Jul 2026 12:52:27 +0000

In reply to Yogesh Panchal.

Try using a five wire module. First try the three wire (ignoring the green) that we use in CRT, keeping the pot at minimum. Then if it switches, try the other and close the case. Many thanks for your comments, dear Yogesh Bai!

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By: Parasuraman S

Parasuraman S — Mon, 06 Jul 2026 12:50:14 +0000

In reply to Philip.

There seems to be some mistake. There was no birthday party there. It is a video stream from a channel as an advertisement for Caravan. I took video of the TV working and took an extract. Many thanks for your wonderful involved comments, that make you unique, dear brother!

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By: Yogesh Panchal

Yogesh Panchal — Sun, 05 Jul 2026 17:56:05 +0000

Good job! Sir
currently i am working on one Toshiba 32" Led TV SMPS. TV Model is 32L2450VT & SMPS marked with V71a00030500, unfortunately did not find any schematic for the smps.PWM Used is TEA1733 problem primary MOSFET not switching & PWM is having 7v on VCC pin through Startup circuit i think because Mosfet is not switching there is no auxiliary supply. (as per datasheet IC threshold VCC voltage is 20v).

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By: Philip

Philip — Sun, 05 Jul 2026 15:45:29 +0000

Of all the articles I've read here, non has ever distructed my attention as this three-in-one story. As I read the first samsung-panel story, the birthday photo caught my attention for quite some while. Honestly if I would have been invited I would have excused myself for being at the wrong place. There is no remote resemblence of the 'techies' special guest celebrating his birthday, and the Parasuraman impression (usual photo) in my mind. The appearances are worlds apart, save for the spectacles. How your host arranged for the cake and what I think is a nice radio present, beside the TV repair, would make any one envious. Congratulation for the birthday party, dear Parasuraman. Well done my fellow jeans wearer for being so caring for the mindful man we really like. Evidently you two share much more in your personal lives that goes beyond TV repair. Also what captured my interest is the TV whose owner couldnt wait any little longer for it to be repaired much more carefully, yet he had another new TV.

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By: Parasuraman S

Parasuraman S — Sun, 05 Jul 2026 01:39:25 +0000

In reply to Mark J.

Many thanks, dear Mark!

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By: Parasuraman S

Parasuraman S — Sun, 05 Jul 2026 01:38:16 +0000

In reply to Albert van Bemmelen.

Dear Albert, it always is good to try your hand on do or die sets. Please salvage whatever you can from the TV and send the rest for recycling, if available. The backlight strips should be replaced entirely to give a long life. Replacing the domes won't solve the problem. You can perhaps restore the backlight with its reflector and diffuser sheets, discard the panel and place a large family photo on it with the backlight on. This is what some of our techie friends do here. That will serve as a good photo frame with backlight! (Most of the Samsung TV backlight will get on without connecting the mother board) All the very best.

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