Re: power board faulty BN44-00197A
If I shorting inverter on/off and stb 5.3V , the backlight come on.
ebenedekfi
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Last Activity: 11-12-2024, 12:02 PM
Joined: 08-04-2016
Location: ODORHEIU SECUIESC
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Re: power board faulty BN44-00197A
I measured 12V on pin1 conn CNI806Leave a comment:
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Re: power board faulty BN44-00197A
I put a jumper pin1-pin3 on connector CN801.
Pin1- power on-off
Pin3- stb 5.3V
Pin1 at conn. CNI803 (inverter on/off) I measured 0V.Leave a comment:
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Thank for your reply.
No backlight, nothing. Before I replaced the caps, red standby light blinked. Now nothing....Leave a comment:
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power board faulty BN44-00197A
Working on a Samsung LE40A430T1,with a power board faulty BN44-00197A.
In first stage I changed following caps: CM804, CM806, CM809, CM812, CM810, CM808
Resistor RM851, RM852, RM853 are burnt, i changed it, and I changed the IC ICM802 too.
Now my problem:
Standby voltage 5.3V is OK, if the mainbord is not plugged in, but if plugged in MB the standby voltage become 2.1V-2.3V instable. without MB ribbon plugged in, the power supply starting ok, 13V ok, 12V on inverter ok.
Please help.
Endre -
Re: Need Help Repairing BN44-00197 board
I have the same board BN44-00197A.
In first stage I changed following caps: CM804, CM806, CM809, CM812, CM810, CM808
Resistor RM851, RM852, RM853 are burnt, i changed it, and I changed the IC ICM802 too.
Now my problem:
Standby voltage 5.3V is OK, if the mainbord is not plugged in, but if plugged in MB the standby voltage become 2.1V-2.3V instable. without MB the power supply starting ok, 13V ok, 12V on inverter ok.
Please help.
EndreLeave a comment:
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