Fix Your Stuff Community Store

Repair guides and support for your Samsung TV.

2608 Questions View all

Options

My tv shows only energy gauge than it's stuck. Cannot turn off...

Hello. i have one major problem. I Got samsung smart tv which turns on if i plug it to the to the wall socket. It shows smart tv logo than sometimes displays source EXT.(but no number) and NO TIME INFORMATION but not every time. Beside that it shows energy gauge in the right bottom corner. From this point it's stuck. No picture just that gauge and that sign, you cannot turn it off with remote or button on the tv. nothing works. Cannot open menu nothig. I allready tear it down and checked for voltages from psu. They are all present. Backlight (leds) are all ok. Can you please adwise me what could be wrong? In the past i repaired manny tv's (bad capacitor blown controller chip on psu blown mos-fets... This one is a mystery for me. I'am affraid it is firmware or controller on main board or not :)

Thank you for your time.

Answered! View the answer I have this problem too

Is this a good question?

Yes No
Score 0
Add a comment

1 Answer

Filter by:
Most Helpful Newest Oldest
Chosen Solution

Options

Hi @peeterr

What is the model number of the TV?

There should be a Standby voltage on the power board when the power is first connected and the TV should go into Standby mode and not turn on until it is told to do so by the remote control unit or the TV power button.

Have you tried disconnecting the TV power button from the mainboard and check if the TV goes into Standby and doesn't turn on when the power is first connected, just in case the power button is faulty? (also remove the batteries from the remote control as well in case it is a stuck remote button)

If it goes into Standby mode OK and IF the IR receiver in the TV is NOT on the same board or cable as the TV power button then try turning on the TV using the remote.

If the IR receiver is on the same board or cable as the power button, still disconnect it from the mainboard and check if the TV goes into Standby on power being first connected.

If it still turns on then you have a mainboard problem.

Was this answer helpful?

Yes No
Score 1

4 Comments:

hi jayeff

Thank you for your answer.

My model of tv is: SAMSUNG UE55H6410SSXXC

VERSION: TS01

The standby voltage on PSU is present 3,2V to be exact. Your claim that when the power is first connected and the TV should go into Standby mode and not turn on until it is told to do so, your suggestion does not apply to all tv models. Exaple: i have 3 lg tv’s. All of them are working and they are in usage. They all turn on immediately when the power is first connected.

I have tried to disconnect the tv power button. The same thing happens. Button is ok. Tv turns on… And yes it is the part of ir receiver. Tried to disconect power supply cord which goes from PSU to mainboard. Strange thing happens. The led background is on, just does not dim. Which is logical tv does not have nothing to control brightnes. if i’am correect they should not lit at all?

by

@peeterr

Please unaccept my answer as it didn't help you.

What is the model number of the power board BN44-?????

Sometimes with Samsung power boards the Standby voltage value is shown on the power board near to where the mainboard cable connects or perhaps it is a link on the board marked with a STBY arrow.

The only Samsung's I've worked on all go straight to standby when the power is first connected and the standby voltage of 5V (or sometimes 7V depends on model) is sent to the mainboard, which turns on the red Standby LED.

When the TV is turned on the PS-On/Off voltage from the mainboard drops to 0V. This is usually marked near the connector where the mainboard cable connects to the power board. This turns on the power board from standby to full to supply all the voltages necessary.

A quick way to test the power board is to disconnect the cable between the mainboard and the power board and connect the power to the TV. The TV backlights turn full on and you can measure all the voltages at the power board connector where the mainboard cable was connected to see if they match what is usually printed on the power board near the connector.

I can't find a power board for your model so I can't see an image to see if it like the other ones I've worked on.

As i said this is how it works with the models I've worked on but yours may be different.

by

@peeterr

The voltages seem to be OK so it's looking like a mainboard problem.

I have never found schematics for a Samsung mainboard (you may have better luck) so the only thing that you can try is to replace it and check.

by

hi.

Sorry for late response. I measured all voltages on psu with controll board disconected. My layout is like this:

IN ( ) are my measured voltages.

2. P-DIM2 (3,3V) 1. P-DIM3 (3,3V)

4. P-DIM1 (3,3V) 3. GND

6. OD ON-OFF (3,6V) 5. A13V (12.75V)

8. OD LEVEL (3,6V) 7. A13V (12,75V)

10. BLU ON-OFF (3,5V) 9. A13V (12,75V)

12. PS-ON (4,4V) 11. A13V (12,75V)

14. GND 13. A13V (12,75V)

16. GND 15. GND

18. N/C 17. N/C

by

Add a comment

Add your answer

peter jurecic will be eternally grateful.
View Statistics:

Past 24 Hours: 1

Past 7 Days: 5

Past 30 Days: 28

All Time: 964