Hi guys, I have an Emerson lf461em4 TV that is dead. I checked voltages as far as I could figure out and the power supply appears to be good. There is no standby light when plugged in. I assumed that I should be seeing a red standby light at the bottom front.
I have parts from a Dynex DX-32L200NA14 that I had saved away in case I find one with a good screen that I can part swap.
I noticed that the the mainboards are very different but have the same cable ports.
Not a wise decision but I went ahead and plugged the Dynex mainboard in the Emerson TV without the LCD cable to see what happens.
I plug it into the wall and I get a red standby light. Interesting. I can go further.
Uplugged it and then plugged in the LCD cable, plugged into the wall again, then turned it on.
Backlights on, I see channel 3.1 on the screen,
So that told me that the power supply should be ok even though the mainboard is from a 32", the screen works, no cracks, backlights work, buttons work. I pressed menu and it shows the options but of course the screen is upside down and the colors, sizes are way off.
That's ok, I was just troubleshooting to see what isn't working.
So the mainboard I assume is my problem.
I put the Emerson mainboard back in.
From there I looked up what I could find on the mainboard, I checked the capacitor at C3214 and it is not shorted. I checked capacitor C3832, C3833 and the two small ones there with them.
IC3601 had 2.5v, the other 1117s had 3.3. I assume it was in standby when I checked it since I get no lights or anything.
Anything else that I can check?
EEPROM bad?
Also, there is a QR code sticker over the serial number and below that sticker is another one with a different serial number. It starts with RS2A. The Original under the QR code starts with a DS2A
Thanks
I have parts from a Dynex DX-32L200NA14 that I had saved away in case I find one with a good screen that I can part swap.
I noticed that the the mainboards are very different but have the same cable ports.
Not a wise decision but I went ahead and plugged the Dynex mainboard in the Emerson TV without the LCD cable to see what happens.
I plug it into the wall and I get a red standby light. Interesting. I can go further.
Uplugged it and then plugged in the LCD cable, plugged into the wall again, then turned it on.
Backlights on, I see channel 3.1 on the screen,
So that told me that the power supply should be ok even though the mainboard is from a 32", the screen works, no cracks, backlights work, buttons work. I pressed menu and it shows the options but of course the screen is upside down and the colors, sizes are way off.
That's ok, I was just troubleshooting to see what isn't working.
So the mainboard I assume is my problem.
I put the Emerson mainboard back in.
From there I looked up what I could find on the mainboard, I checked the capacitor at C3214 and it is not shorted. I checked capacitor C3832, C3833 and the two small ones there with them.
IC3601 had 2.5v, the other 1117s had 3.3. I assume it was in standby when I checked it since I get no lights or anything.
Anything else that I can check?
EEPROM bad?
Also, there is a QR code sticker over the serial number and below that sticker is another one with a different serial number. It starts with RS2A. The Original under the QR code starts with a DS2A
Thanks
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