Samsung T220HD touch sensitive power switch modifications?

rreed189 · 11-21-2011, 01:42 PM

Hello. I have a Samsung t220HD I bought for repair, wouldn't power on part of the time said the seller. I opened it up, bulged/blown caps, recapped it with quality caps, still nothing. The power supply is putting out voltages now whereas before it had nothing.

Voltages to the output cable are now within spec with what is silkscreened on the board.

I suspect the crappy touch-sensitive power switch on the front. I have no remote control (or universal remote for that matter) with this unit so it makes it harder to test my theory.

Has anyone had experience with these Samsung touch sensitive switches or maybe have some suggestions on a workaround? Can I just jump some pins to simulate tripping the switch? Can I replace it with a standard type switch maybe?

Thoughts anyone?

Thanks in advance!
Russell Reed

mariushm · 11-21-2011, 01:55 PM

Did you replace the starter capacitor? Should be a small 22-47uF by the main transformer...
Anything happen when you connect the green (power on wire) to the ground?

Pictures of the board?

11-21-2011, 01:42 PM	#1
rreed189 New Member Join Date: Oct 2011 Posts: 2	Samsung T220HD touch sensitive power switch modifications? Hello. I have a Samsung t220HD I bought for repair, wouldn't power on part of the time said the seller. I opened it up, bulged/blown caps, recapped it with quality caps, still nothing. The power supply is putting out voltages now whereas before it had nothing. Voltages to the output cable are now within spec with what is silkscreened on the board. I suspect the crappy touch-sensitive power switch on the front. I have no remote control (or universal remote for that matter) with this unit so it makes it harder to test my theory. Has anyone had experience with these Samsung touch sensitive switches or maybe have some suggestions on a workaround? Can I just jump some pins to simulate tripping the switch? Can I replace it with a standard type switch maybe? Thoughts anyone? Thanks in advance! Russell Reed

11-21-2011, 01:55 PM	#2
mariushm Badcaps Veteran Join Date: May 2011 City & State: Romania Line Voltage: 230VAC 50Hz I'm a: Hobbyist Tech Posts: 2,139	Re: Samsung T220HD touch sensitive power switch modifications? Did you replace the starter capacitor? Should be a small 22-47uF by the main transformer... Anything happen when you connect the green (power on wire) to the ground? Pictures of the board?

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