Samsung LCD TV 8 times blink red diode /wont turn on/

[coojoe_213]

Samsung le32s86bd, Power Supply: bn41-00879b . Tv won't turn on. If i press power button, red diode on stn by blink 8 time. Black screen, no sound. On every button from remote red diode blink.
I open tv and i have 2 caps 1000/35v bad. I replace them, and after that check all caps on power supply with esr meter, they are perfect
Voltages from PS:
I have all correct voltages on inverter /24v/ stable.
5v -correct
13v -12.2v
12v-11.8v
After replacing caps, i remote eeprom /delete eeprom/ and put again empty, but the problem was same.
My question is/....

Do you know somebody what mean 8 times blink on Samsung LCD TV. I search today, every day on google, russian forum, service manual...there is no list with Samsung errors or problem with 8 times blinks.

[dskall]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Don't know blink codes. You get backlight flash? ps-on changes? Don't know if erasing eeprom was a good thing.

[coojoe_213]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

No backlight flash, just black screen. Sometimes, when you have bad caps, eeprom is bad, for example in this case.
https://www.youtube.com/watch?v=5bh3LZ7KcWY

[dskall]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

What about control voltages ps-on, bl-on?

[sordids999]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

There is no fault codes with Samsung standby blinks

[sordids999]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Pictures would also help

[coojoe_213]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Hi. I don't know where i can find PS_ON /BL_ON.

BLU-5V
ADIM-0V
DET-5.3V
GND-0V
PWM-0V

[dick_barton]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

There's service manual which may be of your power supply
The power supply number shown in the picture in post #7 does not match the model number given in post #1 which you say was bn41-00879b
Check the voltage on connector CNM801, pin1 = Power_On/Off

After replacing caps, i remote eeprom /delete eeprom/ and put again empty, but the problem was same.
My question is/....

Will this set power up with a blank EEPROM fitted???

[coojoe_213]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Sorry. I see a lot of Power supply in Internet...

On connector CNM801, pin1 = Power_On/Off I have stable 3.3v. CM856 (1000MF/25V) was very bad (216mf ) i check with esr meter. After this procedure i remove IC501 (eeprom) and from my laptop with programmer i delete eeprom and put it empty the same chip. In this mainboard i see also IC3208 (on my pic) which is also the same like IC501, but delete only IC501.

Here upload short video with 8 blinks: https://www.youtube.com/watch?v=eBS-...ature=youtu.be

[dskall]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Need picture of connector from power board to main board. With connector unplugged what voltages do you get?

[budm]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

You have all the correct power supplies output Voltage per your post #1. You do have 24VDC for the inverter and the BLU 5V (bl-on) to turn on the inverter circuit but no dimming control signal from either Analog dim or PWM dim.

[dick_barton]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

The Samsung sets always blink when turning on but it does not blink any error codes.
Did you save the data from the EEPROM because I would write it back to the EEPROM and test the set again.

[dick_barton]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

You can test your power supply by disconnecting the main board from the power supply and connecting a 1K resistor from:-
B/L_ON/OFF to STBY_5V

and another 1K resistor from
Power On/Off to STBY_5V
The backlights should come on.

I suspect you need a replacement EEPROM but I don't know which one of the two need to be replaced, possibly both.

[coojoe_213]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Yes, i save the old eeprom file. On my file has some (FF) may be is bad.

This at the same time (with two 1k resistors), or first ''1K resistor from
'''B/L_ON/OFF to STBY_5V

and another 1K resistor from
Power On/Off to STBY_5V
The backlights should come on.
''''
and after that

B/L_ON/OFF to STBY_5V'' - check voltage and after that ''and another 1K resistor from
Power On/Off to STBY_5V
The backlights should come on.
'' - check voltages?

[coojoe_213]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Somebody, can you download this files? http://**************/dump/lcd_pdp_t.../241-1-0-44569

[dick_barton]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Yes, i save the old eeprom file. On my file has some (FF) may be is bad.

This at the same time (with two 1k resistors), or first ''1K resistor from
'''B/L_ON/OFF to STBY_5V

and another 1K resistor from
Power On/Off to STBY_5V
The backlights should come on.
''''
and after that

B/L_ON/OFF to STBY_5V'' - check voltage and after that ''and another 1K resistor from
Power On/Off to STBY_5V
The backlights should come on.
'' - check voltages?

Use the two resistors at the same time. First one to jumper BL_ON/OFF to STBY_5V and second one to jumper PowerON/OFF to STBY_5V at the same time.

[coojoe_213]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Ok i will try. I upoload fully two eeprom files LE32S86 IC501 AT24C256BN SOIC8 150mil and LE32S86 IC3208 AT24C256BN SOIC8 150mil
I have question... how many volts i must have on PWM pin and ADIM pin if the tv work correct?

[budm]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

Ok i will try. I upoload fully two eeprom files LE32S86 IC501 AT24C256BN SOIC8 150mil and LE32S86 IC3208 AT24C256BN SOIC8 150mil
I have question... how many volts i must have on PWM pin and ADIM pin if the tv work correct?

See the attached spec sheet of the LCD panel: V315B1-L01. It uses one or the other (PWM or ADIM).

[coojoe_213]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

You can test your power supply by disconnecting the main board from the power supply and connecting a 1K resistor from:-
B/L_ON/OFF to STBY_5V

and another 1K resistor from
Power On/Off to STBY_5V
The backlights should come on.

I suspect you need a replacement EEPROM but I don't know which one of the two need to be replaced, possibly both.

One more question: Where i can find STBY_5V pin?
I think i found one problem but i don't know yet. On ic101(78m09) on mainboard on OUTPUT i have 1v stable, on Input i have 12V, on IC1105(269 5G) on mainboard near to IC101 on OUTPUT i have 0.2v, on Input i have 1v. Is it normal??? All other regulators have correct voltage on outputs.

[coojoe_213]

Re: Samsung LCD TV 8 times blink red diode /wont turn on/

I change 78m09 with brand new, now voltage to output is 1.30v, the problem is a same, 8 blinks, no backlights. Why i have 1.30v on output?