Samsung LN55B650T1FXZA 8 blinks

[kevinm34232]

I haven't opened this one up yet, but when plugged in the red standby light comes on as normal.

When you press the power button, it starts blinking 8 times, with the 8th blink being longer, and then repeats.

I didn't see anything about blink codes in the SM, does anyone know?

[kevinm34232]

Re: Samsung LN55B650T1FXZA 8 blinks

I unplugged the main board from the PS board and PS turns on, and back light comes on. 390V at main caps, all other voltages look good. Main board again?

[budm]

Re: Samsung LN55B650T1FXZA 8 blinks

OK, so far your power supply and inverter are OK. Try disconnecting the LVDS cable to the T-CON and see if you get difference blinking LED.

[kevinm34232]

Re: Samsung LN55B650T1FXZA 8 blinks

Tried that already no difference.

[kevinm34232]

Re: Samsung LN55B650T1FXZA 8 blinks

So I got a replacement main board, and I have the same exact problem. So if the power supply is good, there is only 1 more board and that is the t-con. Unplugging that board doesn't make a difference though?!?

[kevinm34232]

Re: Samsung LN55B650T1FXZA 8 blinks

Is it possible that this main board needs a signal from the t-con board to work?

[kevinm34232]

Re: Samsung LN55B650T1FXZA 8 blinks

Well I had the known main board from the 65" model and the 55" TV will power on, not completely but enough to show the 2nd main board was bad too.

[budm]

Re: Samsung LN55B650T1FXZA 8 blinks

I am not sure if Samsung uses error signal from T-CON or not, try disconnecting the flat cables between the LCD panel and the T-CON board next, otherwise like you indicated, you only have the T-CON to try next.