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Why My TV does not turn on and makes a clicking noise?

Hi .

The second click that you hear is an internal device called protection circuit that is shutting down the TV, and forcing the PSU to +5V low only to keep the TV in standby.
That is called protect mode.


If the TV stays in stand-by, with the LED light on, but does not respond to remote, or to the buttons on the chassis, then that means that the TV has gone in protect (safe) mode because an internal fault had been detected.

In that case the TV is usually faulty.

The fuse on the PSU board is not causing protect mode. When the fuse has blown , then the unit stays completely off.

Common faults on this model are Electrolytic capacitors on PSU board (power board), convergence ICs (convergence board). The parts must be tested before replacement. Less common faults could cause the same problem.

Follow the basic troubleshooting on this article: Why my TV does not start up and remains in...

If that does not work, contact the manufacturer, ringing the support number listed on the owners manual to get the TV repaired by a licensed technician.

Regards.

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1 Answer

Tv will not turn on, the red light is on at all times and dims then brightens.


Hi.

The TV switching itself off with the red light is the way the fault mode tries to tell you that there is a problem. As the internal fault is detected, the TV gets switched off to prevent more damage to internal components.

The TV starts in forced standby. The state is also called "Protect Mode". Protect mode kicks in when an internal fault is detected. The error is detected by protection circuit and the PSU is forced in standby mode, shutting down all voltage lines apart the 5VDC line that keep the standby mode on.

Try disconnecting the power cord for ten minutes, reconnect after ten minutes and restart the TV with no device connected.

If that does not help it means that there is an internal fault and that the TV must be tested and repaired replacing the defective part.

The defective part is usually the PSU. Among components that fail quite commonly there are the capacitors on the power board. If the capacitors look swollen or if there is trace of damage on PSU board, then the affected parts must be de-soldered and replaced. If there is no evidence of damage at a glance the parts must be tested using a multimeter and following schematics from service manual.

If you need to call a technician use the phone number listed on the owners manual or on the manufacturer support web page.

Regards.

Ginko

Aug 11, 2011 | LG 42LC2D 42 in. LCD HDTV

1 Answer

my lcd tv wont come on but the stadby light is on ?


Hi.

The TV starts in forced standby. The state is also called "Protect Mode". Protect mode kicks in whenever an internal fault is detected. The error is detected by controller circuit and the PSU is forced in standby mode, shutting down all voltage lines apart 5VDC to keep standby on.

First try disconnecting the power cord for ten minutes, reconnect after ten minutes and restart the TV with no device connected.

If that does not help it means that there is an internal fault and that the TV must be tested and repaired replacing the defective part.

The defective part is usually the PSU. Among components that fail quite commonly there are the capacitors on the power board. If the capacitors look swollen or if there is trace of damage on PSU board, then the affected parts must be de-soldered and replaced. If there is no evidence of damage at a glance the parts must be tested using a multimeter and following schematics from service manual.

If you need to call a technician use the phone number listed on the owners manual or on the manufacturer support web page.

Regards.

Ginko

Jul 20, 2011 | Samsung LA40A450 40 in. LCD TV

1 Answer

tv dead red light wont stop flashing


Hi.

The TV starts in forced standby. The state is also called "Protect Mode", and kicks in whenever an internal fault is detected. The error is detected by controller circuit and the PSU is forced in standby mode, shutting down all voltage lines apart 5VDC to keep standby on.

First try disconnecting the power cord for ten minutes and restart the TV with no device connected.

If that does not help it means that there is an internal fault and that the TV must be tested and repaired replacing the defective part.

The defective part is usually the PSU. Components that fail quite often are the capacitors on the power board. If the capacitors look swollen or if there is trace of damage on PSU board, then the affected parts must be de-soldered and replaced. If there is no evidence of damage at a glance the parts must be tested using a multimeter and following schematics from service manual.

Regards.

Ginko

Jul 17, 2011 | Televison & Video

1 Answer

tv clicks on but no picture yhe stand by light is bliking i have unpluged the tv from wall and the cable box but it justs click when you turn it on no picture could the settings be on


Hi .

The clicks that you hear is an internal device called protection circuit that is shutting down the TV, and forcing the PSU to +5V low only to keep the TV in standby.
That is called protect mode.


If the TV stays in stand-by, with the LED light on, but does not respond to remote, or to the buttons on the chassis, then that means that the TV has gone in protect (safe) mode because an internal fault had been detected.

In that case the TV is usually faulty.

The fuse on the PSU board is not causing protect mode. When the fuse has blown , then the unit stays completely off.

Common faults on rear projection models are Electrolytic capacitors on PSU board (power board), convergence ICs (convergence board). The parts must be tested before replacement. Less common faults could cause the same problem.

Try first disconnecting all connected devices, and leaving the TV disconnected from power for about 30 minutes. To drain power completely.

You cabn follow the basic troubleshooting on this article: Why my TV does not start up and remains in...


If that does not work, contact Sony, ringing the support number listed on the owners manual to get the TV repaired by a licensed technician.

Regards.

Apr 09, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

2 Answers

I have a somsong hd tv and when i push the power button the tv want come on no picture. I hear a click sound every twenty seconds but no power seem to be getting to the picture tube tv mod# LNS4041DX


Based on your message, your TV has a bad high voltage section. Probably the HOT (Horizontal Output Transistor) failed or shorted and it either killed the high voltage or there's a current fluctuation; that is why the picture went, but there's a clicking sound. Then, when you turned it off or unplugged it the protection circuit remained active.

Once the high voltage fluctuates, that's the time the TV would create a clicking sound.

There's a 75% probability it will require a high voltage and horizontal deflection amplifier overhaul. The normal cost of that should be less than $200 if you take it in.

For this problem, I would suggest to contact a repair tech and have him take care of the problem.

Good luck!

Mar 02, 2010 | Televison & Video

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