Question about Televison & Video
Tv shuts down after a few seconds
Posted by Anonymous on
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Posted on Jan 02, 2017
After replacing the flyback transforer and horizontal synch transistor you will need to adjust the flyback transofrmer as follows:
Turn each setting to just above mid point clockwise, turn the tv on and you should see a white screen with retrace lines in it just before the tv turns back off. set yourself up with a plastic screw driver and prepare for adjusting the focus(top adjustment) turn the tv on and adjust the focus by looking at the pixels on the screen. repeat as needed to complete.
Next setup for the brightness (lower adjustment) turn the tv on and adjust the brightness to where the screen appears to be black(no haze or lines). After the tv turns off wait a few seconds and turnit back on, it should stay on, if not then the brightness setting it too far one way or the other and "TecniklyNuts" it correct, the system detects the setting out of range and turns the tv off. Repeat the two adjustments until the system stays on.
Posted on Feb 08, 2009
SOURCE: When I open my RCA
IF LED IS BLINKING then............. usually after 4 or 5 yrs EHT ( transformer that supplies voltage to tube ) becomes weak - then TV won't get ON.. means no picture no sound ..but LED blinks - in some TVs along with EHT 1 or 2 components like resistor, transistors, etc will also gets deffective ..........IF LED IS ALSO OFF then on main board in power section area some component is deffective ... MAIN BOARD SHOULD BE CHECKED COMPLETELY........ so solution is TV circuit board has to be checked to find whether only EHT is deffective or other components are also deffective - price of EHT will be between Rs.250 (US$ 5) to Rs.600 ( US$ 12) ........iam from bangalore (09986222774, firstname.lastname@example.org ) .....i don't have any idea about EHT component's price & service charge in your area........this problem cannot be solved by user unless user is a technical person having idea about components (resistors, transistors,diodes,...etc..), having multimeter , soldering iron & other tools...so my suggestion call TV service engineer or contact RCA service centre.........
Posted on Apr 22, 2011
Testimonial: "Thanks a lot for your help Carole"
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