Samsung TV dead, no standby light un65mu8000 NOT ABOVE LISTED TV
Hi. after combing the diy sites, here is what I’ve come up with. I have Power board BN44-00912A AND MAIN BOARD BN94-12295K.
When I unplug the main board from power board the Back lights WORK. There are 2 cables running from power board to main board.
I replaced the mainboard but this didn’t fix anything (might be DOA but not sure)
I have checked power on the power supply board but there is no pin that is clearly marked STANDBY to look for the 3.3 or 5v.
There are 20 pins on CNM803. The first 5 are GND. The next few are VAMP (not sure what this stands for).
Then they pin out like this:
OD_LEVEL,
FAIL_COUNT
OD_ON/OFF
BLU_ON_OFF
POWER ON/OFF - (i checked this its at 4.5v)
PINS 11-17 A13V PINS 18-20 GND
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Thanks for the help. Here are the values from the CNM803 cable connector.
WITH = with MB connected
WO = without MB connected
CNM803 WITH WO
1. GND 0 0
2. GND 0 0
3. GND 0 0
4. GND 0 0
5. VAMP 9 12.85
6. GND 0 0
7. VAMP 9 12.85
8. OD_LEVL 0 3.2
9. VAMP 9 12.85
10 FAIL COUNT 0 13
11 A13V 9 12.85
12 OD ON OFF 0 3.2
13 A13V 9 12.85
14 BLU 0 3.2
15 A13V 9 12.5
16 POWER ON/OFF 96 4.5
17 A13V 9 12.85
18 GND 0 0
19 GND 0 0
20 GND 0 0
由 rick irons 完成的
Well, almost good news.
I got a used mainboard. Installed it. Power is on and picture is up BUT half the screen is darker on one side (some faint lines going from top to bottom on left side of screen when screen is black)
Also, the remote only turns the TV on and off. No other functions. I tried taking out batteries and holding power button to reset but it didn't work
由 rick irons 完成的