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Equipment Repairs => LCD TV forum => Topic started by: Attilio on September 23, 2014,15:17:47

Title: Samsung LE26R86BD
Post by: Attilio on September 23, 2014,15:17:47

A cordial greeting to all,
I have this TV Samsung LE26R86BD with the defect: it tries to turn on but the LED is still flashing,  power BN44-00191A is good and after some testing I noticed that the signal "main_power_control" pin 2 cn1101 coming from the main  BN41-00813e cyclically from 0v to  3v and as a result tensions on power BN44-00191A up and down.
Someone just happened? and this signal comes directly from the main cpu or some regulator ..
Thank you for any suggestion.
a greeting
Attilio ..   

Title: Re: Samsung LE26R86BD
Post by: sparky on September 24, 2014,15:33:41

Hi sounds like bga  chip on main board replacement board should cure it
try EMOS for board
dave

Title: Re: Samsung LE26R86BD
Post by: Attilio on September 27, 2014,13:08:35

Hello Sparky,  :051bye:
Thanks for the reply
I try and let you know.
thanks
Attilio ..

Title: Re: Samsung LE26R86BD
Post by: michael first on September 28, 2014,17:04:35

Hi,if you have bulging caps on the psu replace them then ic1803(24c256 eeprom!) as it could be defective.Ciao!

Title: Re: Samsung LE26R86BD
Post by: Attilio on September 29, 2014,01:56:31

Hello Michael,
thanks for the reply,
the psu is ok and already changed ic 1803 as Sparky says it could be a problem of cpu BN41-00813e. Before I try to change it with a reflow and will let you know.
greetings
Attilio
P.S. I translate with google I hope you understand .... :57:

Title: Re: Samsung LE26R86BD
Post by: Attilio on October 22, 2014,14:58:00

It works !!!!  :thumbup:
I did reflow the BGA chip and replaced the 2 SMD capacitors near the chip .
Thanks everyone .