This problem occurred after i installed a new flyback. When i turned up the volume ,the TV went tick tick' and then it shuts off. I turned it back on and same thing. What could be the problem? Thanks in advance for any suggestions that might be relevant.
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Not economically. The ticking sound is a sure sign of high-voltage shutdown, and is coming from your flyback transformer - the most expensive part in the TV besides the picture tube. Even if it's not the flyback, troubleshooting the high voltage section is usually more than the cost of a new TV.
ok try this , unplug the front control board , if it stays on then thats the problem , but if it don't , then you will need to check the components around the EEPROM and resolder all components that heat up, it is possible that the crystal and EEPROM may need to be replaced but doing these other things plus a couple of more checks will help find the culprit
also make sure all work is good, resolder and recheck are the best way to eliminate any problems
please give a fixya rating so that i may continue to help you if needed , thanks
the old ticking sound... yes.. it means your power supply shut down and continously trys to reboot ... hense the tick sound as the voltage rises and fails.
Means you got a short somewhere. Most likely the obvious high power consuming High Voltage Suppy... and as I found in 99.9 percent the Horizontal power Transistor shorted... 80 percent Flyback, 10 percent audio... 10 percent some odd circuits like vertical or yoke as shorted.
The smell of something burning is not a good sign. The clicking sound you are hearing could be a relay or breaker kicking in and out as a result of whatever is wrong.
This could be cause by:
1. A problem in the power supply.
2. A problem with the Horizontal Output Stage.
3. The Flyback transformer.
Someone gave me a TV once that had the same problem. I determined that it had a bad flyback transformer. I replaced the transformer and the TV worked about 5 secs before I saw some black smoke come out of the new flyback. I turned it off right away and realized that something else was bad that caused the original flyback to burn up. The same thing was causing the new flyback to go as well. It turned out to be a shorted, 50 cent hi-speed switching diode. Fortunately, because I had turned the set off quickly when the 2nd flyback started to smoke, once I replaced the diode, the TV was fixed.
If you want to get it working again, you'll need to have it serviced.
How old is your TV?
TV's have a circuit that monitors the high voltage and shuts down the
set if it senses something amiss. If the set is at least 10 years
old this is typical and not worth repairing. If less, figure on
replacing the flyback transformer.
Hope ya fix it!
The Tic Tic sound is a result of the high voltage shutdown circuit. Thats what the circuit does if theres a short in the Highvoltage sweep. like maybe a shorted horizontal output transistor??. The only way to really tell is go in and measure the start up voltage and if the Hivoltage comes up and shuts down its a fault in the shutdown or Hhv regulation circuit . if it dosent come up at all then the faults in the Horizontal sweep circuit . Hope this explains a bit? good luck