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Batteries are OK and properly inserted? Testing remote control: The remote control puts out IR (InfraRed) signal that human eyes cannot see, to find out if the remote is sending out the signal or not you just point the remote at the digital camera's Lens (Digital Camera can detect IR), you should see flashing light on the camera's screen when any one of the remote button is pushed. If you do see the flashing on the camera, then the problem is in the TV IR receiver or the main logic board; more troubleshooting with scope will be needed to look at the signals. Parts: www.shopjimmy.com www.remotes.com
Unplug,replug the tv back about an hour later.Than go to the tv menu go to PICTURE go down to reset.The Tuner board should reset back to the factory setting,all ur HDMI ports hubs should function now,not than ur Tuner board is defective must be change.Tries websites Like Shopjimmy.com,Ebay.com to buy a refurbish Tuner board for the replacement,
I'm working on one now. So far, I've found two capacitors on the power supply board bad, both 1000uf/16V 105 degree caps location EC9 area. Still have mild interference on the screen which seems to change with the type of video being displayed.. Will look for C301 next, is it on the signal board?
We need to verify if the problem is in the preamp or poweramp sections. Hook up the powered PC speakers to the AUDIO Line out RCA jacks and verify that sound is OK there, if it is OK, The problem will be in the power amp sections that drive the speakers. If it sounds bad at the RCA jacks, the problem will be in the sound processor board which mean the main board will have to be replaced, same if the power amp is bad.
The web site shopjimmy.com has tons of parts for your TV.
I looked through it and they don't have a signal board right now.
It's the best place I know to find the parts you need.
Sooner or later, they should acquire one.
Option 2 Fix the signal board. Try to find a SERVICE MANUAL for your TV on the web. This manual will have parts list, schematics, and test points for circuit boards for your TV. A electronic tech should have no trouble fixing it.
Try pressing the input button on the remote control until it finds the right input.
Also if there is a PIP (Picture in Picture ) button try pressing it.
Let me know if this helps and please rate this solution.
Is sounds more like a button got stuck or you could have a main board failure since the TV is powering up normal; but it could also be a power supply not providing the proper voltages to the main board circuitry and the microprcessor does not know what to do.
How old is your TV?
Well I am not sure about that model but I had one do that and what I had to do was unplug and replug the LVDS which is the cord connecting the Main board to the screen. I am not sure exactly where it is located on that model but if you take off the back and locate the board that looks to be the "main" board. Then you have to locate the cord that connects to the screen, in mine it is a bunch of wires in a black covering, and unplug and replug it. I had to do this about 10 times to get the picture unfortionantly I already bought a new one but it now works.