TV DISPLAYS NO PICTURE, NO SOUND. HOWEVER THE SET DOES FIRE UP. POWER SUPPLY APPEARS TO BE RUNNING BUT SCREEN IS BLANK. THE ON TIMER LIGHT IS SHOWING RED AS IN THE ACTIVE POSITION. I HAVE TRIED POWERING DOWN FOR SEVERAL DAYS AND STILL NOTHING UPON TURN ON. THE PROBLEM STARTED A MONTH OR SO AGO BUT POWERING THE SET DOWN APPEARED TO FIX IT EVERY TIME. THE RED ON-TIMER LIGHT WOULD THEN APPEAR AS GREEN AND TV WOULD FUNCTION NORMALLY AFTER A SHORT POWER DOWN. THIS TIME I HAD BEEN ON HOLIDAY WITH SET OFF AT MAINS AND UPON RETURN, THE SET TURNS ON (HEAR IT)BUT RED ON TIMER LIGHT IS DISPLAYED UNTIL AV IS PRESSED 3 TIMES, ie AV1,AV2,AV3 THEN NORMAL TV ETC. THIS IS ONLY TIMER LIGHT GOES OUT. I HOPE I HAVE DESCRIBED THE PROBLEM AS MUCH AS YOU NEED. aNY HELP YOU COULD PROVIDE WOULD BE GREATLY APPRECIATED.THANKS!
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Is it still under warranty? If not I would find a good TV Service Shop and have them check out the power supply as there more than likely a 'Capacitor' much like a battery that is going bad. Blessings, A/V Media Guy
have a Mitsubishi TV 1993. Model CS-35301. The problem is that there is a white line that is running through a blank screen. The sound is fine just no picture. Have you heard of "Vertical Collapse?"
I would love to save the TV.
nothing to worry just minimise brightness to avoid screen burn.
means one bright hor.line in the middle of screen.
this problem can be solved
1 check vertical yoke connector or wire loose
2 check supply to vertical section which normally comes from EHT transformer
check components in vertical section or print loose
If the screen displays VIDEO 1 then the set is in video 1 mode, looking for a signal on the video 1 input jacks. Press the TV/VIDEO button on the remote (or the set itself if it has it) and cycle around to the input you are actually using.
The high voltage should be around 29.5 KV and not fuctuate between 20-30 KV that would indicate a high voltage regulation issue then. Are the filaments lighted up in the neck of the CRT? If so then yes you are probably looking at a low voltage issue such as a 12 volt source or a a/v switching IC issue.
Instead of explaining the SAP/Stereo function to you, the easiest way to get the TV back to normal is while the set is on press the ACTION and POWER buttons at the same time and hold them until the CHK screen appears. Once that does release the buttons and then press the action button again to exit the CHK screen. Your TV is now back to the factory settings and will need to have the channels programmed again. By the way the SAP/STEREO button on the remote should be near the upper left hand corner of the remote itself.