Samsung UN32EH5000F won't power on when dim control connected to PSU
I have a Samsung UN32EH5000F. Replaced the power board and the main board but still cannot power on. What I have found when I unplug the backlight dim control I can power it on but not when is plugged back. The plug for the backlight dim control (CNL802) says D-, S+, S-, and D+. I have BLU power 4.86V to the backlight after some delay on the main board.
Any clue what could be wrong? Thanks
Update: 2/29
It looks like CNL802 has those voltages:
- when the TV is turned off: D+: 155V, D-: 0V
- when the TV is turned on: D+: 152V, D-: 1.4V
Should I measure it D+ to D- and S+ to S- instead of all of them to GND?
Update: 3/1 AM
Single board on a pic - old board
Two boards on a pic - two replacement boards
Update: 3/1 PM
It looks like some of the backlight LEDs are dead
Update: 3/9
Replaced LED strips - problem solved!
crwdns2934109:0crwdne2934109:0
crwdns2944067:02crwdne2944067:0
@jackthekni80531 disconnect the power cord from the power board. Then disconnect the main board from the power board. Next plug your power cable into the power board. Your back lights should come on. What did you get?
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0
@oldturkey03
How it can work when there is no BLU signal from the main board (is disconnected) to power on the backlight? I have tried and did not work because CNL802 is plugged in which causes some issues as I have mentioned above.
crwdns2934271:0crwdnd2934271:0 Scyzor-yk crwdne2934271:0