Samsung TV model: LN55B650t1f Won't Turn On
My Samsung TV model: LN55B650t1f won’t turn on. The standby light is on but nothing happens when I push the power button on the TV or the remote. I checked the remote batteries and I checked that the outlet the TV is plugged into are giving power. Any suggestions on why my TV won’t turn on?
After searching online, I’m thinking I need to replace the power supply motherboard, part BN44-00268A, but I’m not 100% sure. I’m hesitant to purchase a replacement motherboard when I’m not sure that that will fix the issue. I can upload pictures of my TV’s motherboards later, I’m just not at home right now. Is there any definitive way to know that the power supply motherboard is the issue?
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7 opmerkingen
Hi @emkf ,
Did you try a Power refresh, you didn't say?
Turn off the power to the TV and disconnect the TV power cord from the power outlet.
Press and hold the TV power button for 30 seconds to drain any residual power from the TV and then release the button.
Reconnect the TV power cord to the outlet and switch on the TV and check what happens.
To know whether the power board is the problem, you will need to measure the various voltage supplies produced by the power board to the rest of the TV to see if they are present and of the correct value.
door jayeff
I would first check the board for any fuses
& make sure they are not blown out
door Robert Johnson
@jayeff I did try a power reset I found in an internet search where I unplugged the TV and held the power button for 10 seconds. But I didn't try holding the power button for 30 seconds. I'll try that when I get home this evening.
door Emily Faria
@Robert Johnson I'll also check the fuses after trying the power reset from @jayeff .
door Emily Faria
I tried holding the power button for 30 seconds with the TV unplugged but I'm still getting no response with the power button after plugging back in the TV.
I've attached pictures of the two motherboards that aren't covered by plastic safety covers. I also took a close up picture of a capacitor that I believe might be the culprit because it's bulging a bit more at the top than the others. The others are perfectly flat on the top, as seen in the picture.
door Emily Faria
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