• Samsung UE40F6500SS makes a clack-clack sound and won't turn on.

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#1 Samsung UE40F6500SS makes a clack-clack sound and won't turn on.


Napisal/-a Zemog 25 Junij 2025, 19:56
Hello everyone

I have this Samsung UE40F6500SS TV with a BN44-00622B power supply. When I plug it in, the clack-clack relay keeps making a constant noise and won't turn on.

I've checked diodes and MOSFETs, and replaced some suspect capacitors, but it's still the same.

I've performed the following measurements:

On the BD801S diode bridge:
The AC current is unstable with spikes.
On DC current: Pulses up to 300V.

On the relay:
120V with spikes to 300V.

On capacitors CP806 and CP807:
Unstable between 370V and 385V.

ICS801CS:
Pin 1: 0V.
Pin 2: Unstable between 12-15V.
Pin 3: 0V.
Pin 4: Unstable between 1.11V-1.40V.
Pins 5, 6, 7, and 8 (Drain). Pulses ranging from 400V to 1000V

QP802C (60R360N):
Pin 1: 0V
Pin 2: Pulses up to 600V
Pin 3: 0V

DP804C (MURF860)
Pin 1: Unstable between 375V and 385V
Pin 2: Very unstable with pulses up to 500V

ICP801S:
Pin 1: 2.40V
Pin 2: Between 0 and 0.5V
Pin 3: Between 0 and 0.5V
Pin 4: 2.25V
Pins 5 and 6: 0V
Pin 7: Between 0 and 0.3V
Pin 8: From 0 to 10V

When the voltage is unstable or between two values, the relay's sound indicates changes, spikes, or instability.

Mention that very punctually, it stabilizes and starts working OK

Any help please?

Re: Samsung UE40F6500SS makes a clack-clack sound and won't turn on.


Napisal/-a Google Adsense [BOT] 25 Junij 2025, 19:56

#2 Re: Samsung UE40F6500SS makes a clack-clack sound and won't turn on.


Napisal/-a Zemog 1 Julij 2025, 14:09
I forgot to mention that when the TV is fully assembled, when you press the power button, the Smart TV image appears on the screen for a second, then the relay beeps, but on rare occasions, it turns on perfectly and no longer displays the error.

The LED strips have been replaced and tested individually, and the same error occurs with both the original and the replaced ones.

Can anyone give me any suggestions on what I could do or measure?

EDIT: The fault lies with a component in the power supply. I've had the opportunity to try another power supply, and the TV works without any problems.

Re: Samsung UE40F6500SS makes a clack-clack sound and won't turn on.


Napisal/-a Google Adsense [BOT] 1 Julij 2025, 14:09

Kdo je na strani

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