No speaker audio. Headphone audio normal. No on screen display of audio when adjusting volume. Replaced 3300ufd caps for no picture or audio issue. Picture now normal just no audio
Re check all connections on the boards that you worked on. Make sure they are tight.
SOURCE: No picture, sound works. Screen flickering
It sounds like the video output isn't
working its most likely a component
failure 1 thing you could try is connecting
a rca cables from video/audio out on the set to
another set vid/audio inputs to see if it the video gets
through.This is a problem that requires technical
knowledge and test equipment to trace the video
signeal
SOURCE: PLASMA DISPLAY STARTING UP. PLEASE WAIT
Un plug the power to the Plasma Screen and also to the Media Receiver for ten minutes. Disconnect the off the air antennas both A and B. After ten minutes plug in the plasma screen then the media receiver and turn on wi the remote control. You should now be back in operation. I was.
Also It may not be a bad digital tuner. The TV Guide feature is active even when the zip code is set to all 0s so if you have an over the air antenna attached the TV will look for the TV Guide info and if it can not find it because of a weak signal or the chanel it is tuned to does not carry that information the TV thinks that tuner does not work which triggers the 12 flashes. Also on power up the gray box with the waring message "Plasma Display Starting Up, Please Wait" appears and the screen is blank.
SOURCE: 42" magnavox plasma tv
I partly agree with imaliszewski the problem is Y buffers (upper & lower). There is 3 parts to the Y board (Y-main, Y-upper, and Y-lower). There was an issue with defective Y-buffers in a memo sent out by the Plasma manufacture. The problem could be that you just got a set of these defective buffers in your panel. Or as Imaliszewski stated a current problem. but if you replace the Y-buffers repace them as a set. If your TV goes out again after changing the buffers. The panel is causing the problem by drawing too much current. That was a Defect I found out why working in a Philips/Magnavox warranty repair facility.
SOURCE: Vizio P42HDe Plasma TV - Audio, but no picture
check the backlight inverter and the Y-sus board the one to your left. if those are fine check the bottom right buffer board
SOURCE: there is no picture but have audio
Your mainboard is damaged and need to be replaced. in order to get a new one you will need a product code and model number, both located in the back of th TV next to serial number.
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This is a model Magnavox 50MF231D/37
Also do not see any volume information displayed on screen when attempting to raise or lower volume. Can see that volume level is changing in the "menu" sound setting preference and can change the audio of the headphone jack which is producing audio. The suggested solutions don't seem to match my problem.
Trouble found. Power supply cable not connected to SSB board.
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