Just wondering if you have the correct chart as one of the voltages you quoted seemed wrong.
Searching for a [https://www.amazon.com/Samsung-UN49MU6290FXZA-UN50MU6300FXZA-UN55MU6290FXZA-BN44-00807F/dp/B07F2KGGKX|Samsung UN49MU6290FXZA power board], shows that the power board is a BN44-00807F. On the board it shows that the Standby voltage is 7.5V at the test point which should change to 11.8V when the TV is on.
Where were you measuring the Standby voltage?
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The 9V measured with the mainboard connected may be a bit high as the mainboard needs to have the correct voltage to turn on the Standby light. The 11.8V is ~12V which may be close enough.
+
The 9V measured with the mainboard connected may be a bit high as the mainboard needs to have the correct voltage from the power board to turn on the Standby light. The 11.8V is ~12V which may be close enough.
Did you check to see if all the voltages were actually getting to the mainboard, by measuring them at both ends of the cable? Since you have replaced both boards it may be a problem with the cable between the two boards. Just a thought.
[image|2134029]
(click on image to enlarge for better viewing)
Apologies if the board number in your model is not the same as shown above and the voltages may be as you say.
Just wondering if you have the correct chart as one of the voltages you quoted seemed wrong.
Searching for a [https://www.amazon.com/Samsung-UN49MU6290FXZA-UN50MU6300FXZA-UN55MU6290FXZA-BN44-00807F/dp/B07F2KGGKX|Samsung UN49MU6290FXZA power board], shows that the power board is a BN44-00807F. On the board it shows that the Standby voltage is 7.5V at the test point which should change to 11.8V when the TV is on.
Where were you measuring the Standby voltage?
-
The 9V measured with the mainboard connected may be a bit high as the mainboard needs to “see” the correct voltage to turn on the Standby light. The 11.8V is ~12V which may be close enough.
+
The 9V measured with the mainboard connected may be a bit high as the mainboard needs to have the correct voltage to turn on the Standby light. The 11.8V is ~12V which may be close enough.
Did you check to see if all the voltages were actually getting to the mainboard, by measuring them at both ends of the cable? Since you have replaced both boards it may be a problem with the cable between the two boards. Just a thought.
[image|2134029]
(click on image to enlarge for better viewing)
Apologies if the board number in your model is not the same as shown above and the voltages may be as you say.
Just wondering if you have the correct chart as one of the voltages you quoted seemed wrong.
Searching for a [https://www.amazon.com/Samsung-UN49MU6290FXZA-UN50MU6300FXZA-UN55MU6290FXZA-BN44-00807F/dp/B07F2KGGKX|Samsung UN49MU6290FXZA power board], shows that the power board is a BN44-00807F. On the board it shows that the Standby voltage is 7.5V at the test point which should change to 11.8V when the TV is on.
Where were you measuring the Standby voltage?
The 9V measured with the mainboard connected may be a bit high as the mainboard needs to “see” the correct voltage to turn on the Standby light. The 11.8V is ~12V which may be close enough.
-
Did you check to see if the correct voltages were actually getting to the mainboard? Since you have replaced both boards it may be a problem with the cable between the two boards. Just a thought.
+
Did you check to see if all the voltages were actually getting to the mainboard, by measuring them at both ends of the cable? Since you have replaced both boards it may be a problem with the cable between the two boards. Just a thought.
[image|2134029]
(click on image to enlarge for better viewing)
Apologies if the board number in your model is not the same as shown above and the voltages may be as you say.
Just wondering if you have the correct chart as one of the voltages you quoted seemed wrong.
Searching for a [https://www.amazon.com/Samsung-UN49MU6290FXZA-UN50MU6300FXZA-UN55MU6290FXZA-BN44-00807F/dp/B07F2KGGKX|Samsung UN49MU6290FXZA power board], shows that the power board is a BN44-00807F. On the board it shows that the Standby voltage is 7.5V at the test point which should change to 11.8V when the TV is on.
Where were you measuring the Standby voltage?
The 9V measured with the mainboard connected may be a bit high as the mainboard needs to “see” the correct voltage to turn on the Standby light. The 11.8V is ~12V which may be close enough.
-
Did you check to see if the 9V? was actually getting to the mainboard? Since you have replaced both boards it may be a problem with the cable between the two boards. Just a thought.
+
Did you check to see if the correct voltages were actually getting to the mainboard? Since you have replaced both boards it may be a problem with the cable between the two boards. Just a thought.
[image|2134029]
(click on image to enlarge for better viewing)
Apologies if the board number in your model is not the same as shown above and the voltages may be as you say.
Hi,
Just wondering if you have the correct chart as one of the voltages you quoted seemed wrong.
Searching for a [https://www.amazon.com/Samsung-UN49MU6290FXZA-UN50MU6300FXZA-UN55MU6290FXZA-BN44-00807F/dp/B07F2KGGKX|Samsung UN49MU6290FXZA power board], shows that the power board is a BN44-00807F. On the board it shows that the Standby voltage is 7.5V at the test point which should change to 11.8V when the TV is on.
Where were you measuring the Standby voltage?
The 9V measured with the mainboard connected may be a bit high as the mainboard needs to “see” the correct voltage to turn on the Standby light. The 11.8V is ~12V which may be close enough.
Did you check to see if the 9V? was actually getting to the mainboard? Since you have replaced both boards it may be a problem with the cable between the two boards. Just a thought.
[image|2134029]
(click on image to enlarge for better viewing)
Apologies if the board number in your model is not the same as shown above and the voltages may be as you say.