samsung ln46c670m1f won't boot

[ijchan223]

Hi, i have a samsung ln46c670m1f that won't boot just a solid red led. i have done some visual troubleshooting and all the caps appear to be good and no obvious fried components.

tested voltages with the main board disconnected the black light would come on and all the voltages check out on the connector but with the main board connected the standby voltages (at CN8 ) seems to drop and cycles on and off at a rate of 1 hz. to me it appears that there is an issue with the mainboard but i am new at troubleshooting a tv so i would like some input before i spend money on it and it be the powersupply .

[ijchan223]

Re: samsung ln46c670m1f won't boot

Update: i replaced the logic board and it works fine. out of curiosity, i will attempt to do some component level troubleshooting and repair on the board. More than likely the micro-controllers are dead from a lighting strike or something, but you never know till you actually look into it.