Samsung UE32C5100 No Power No Standby

Hello everyone!

I have this Samsung UE32C5100 TV with a BN44-00351R power supply, which does not turn on the standby light does nothing.

I have checked the diodes, low value resistors and mosfets, and I have not found any shorted, nor open, and with correct values.

In the CNM801 connector that goes to the MAIN board I only have the StandBy value (Pin 16) at 5V. I have removed the Power Supply and have made the voltage measurements indicated on the attached sources.

It strikes me that at one end of the RM820 I have 20V and at the other 0V. I have measured the value of the RM820 resistor and it is fine, and I have checked the resistance with respect to ground and it is not shorted.

With everything connected, I have measured the value on the infrared receiver (3.3V), and when I press the remote this value drops to 2.5V. Is that value correct?

Can someone explain to me the operation of the signals in this source?

Thanks





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Hola a tod@s!

Tengo éste TV Samsung UE32C5100 con fuente de alimentación BN44-00351R, el cual no enciende luz standby no hace nada.

He revisado los diodos, resistencias de bajo valor y mosfet, y no he encontrando ninguno en corto, ni tampoco abierto, y con valores correctos.

En el conector CNM801 que va a placa MAIN solo tengo el valor de StandBy (Pin 16) en 5V. He extraído la Fuente de alimentación y he realizado las mediciones de voltaje que se indican en las fuentes adjuntas.

Me llama la atención, que en un extremo de RM820 tengo 20V y en el otro 0V. He medido el valor de la resistencia RM820 y esta bien, y he comprobado la resistencia con respecto a masa y no está en corto.

Con todo conectado, he medido el valor en el receptor infrarojo (3,3V), y al pulsar en el mando este valor cae a 2,5V. ¿Ese valor es correcto?

¿Alguien me puede explicar el funcionamiento de las señales en esta fuente?
Gracias

Try to read eprom dump and check if approx first 1000 rows are filled with data, or empty.
On plenty Samsung TV such behavior is due to faulty eprom dump and eprom chip end of life also. In this case standby diode is also not switching on.

Hello, I have desoldered and read the eprom.
From line 0 to line FFF0, it is empty.
Now I have to look for the dump. Can it be obtained from the Samsung page?

Samsung give nothing.
It is start-up procedure which get blank, especially when TV is switched on and off multiply in short time (i.e. power supply from plant problem).
I used page remont-aud.net and find there plenty of dumps and very similar one started to work (filled up only this start-up procedure). I saw they are also helping people, however site is from not beloved country right now..

Send nnumbers from stickers on board. BN41... BN94... or similar
Send full code of TV after UE32C5100... could be on sticker on board or back plastick panel.

Hello, the problem is solved and the TV is working.
The problem was in the IC402 info. I was able to get a dump, programmed it externally, and the TV is now working perfectly.
Thank you

In which section should I upload the file in case other people need it?

Zemog wrote:In which section should I upload the file in case other people need it?

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