My TV stopped working the other day. When I press the power button, the green light comes on, and it chirps for a second, starting high then dropping out, and the green light turns off. It repeats this routine 3 times, then stops. Do I only need the IHVT, the xsistor, or both? Thank you.
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The usual cause is a shorted horizontal output transistor. The way this chassis is designed, the supply makes 140 volts which is always on and applied to the transistor. The heavy load on the power supply causes it to make that chirping sound as it keeps trying to start, then shuts down right away.
The h-out is Q14401, RCA part number 237470. A 2SC5148 can replace it.
If everthing is properly connected and the system does function,you may need to program the remotes. But first,let's check a couple of things. Turn the ignition on and press and release the push button LED three times and check for a response.The alarm should chirp one time. If the alarm chirps one time, press and release the lock button on the remote. If the alarm responds with a long chirp, press and release the push button LED one time,should hear two chirps; press and release the unlock button on the remote. The alarm should respond with a long chirp. Press and release the push button LED one time, you should hear three chirps, press and release the green button. You should hear a long chirp from the alarm. Press and release the push button LED one time, you should hear four chirps from the alarm; press and release the (1)button on the remote. continue the process for button(2).Now, if you do not hear the one chirp in the beginning, the system is not responding. Check your power and ground connections. If the system does chirp but, no response from the remote, check your antenna cable for proper connection at the module and the antenna. If the connections are fine, check the remote. Also,it is possible that there is major RF interference where you are located. If all of the above check out, try moving the vehicle to a different location and test.
You could try reprogramming the remote: ignition on, press and release programming switch 3 times, you will hear one chirp( channel 1),press the lock button, press and release the switch 1 time ( two chirps, channel 2), press the unlock button, press and release switch 1 time ( three chirps) press green remote start button,press and release switch 1 time ( 4 chirps) press option button. Turn ignition off. test. If this doesn't work, try disconnecting the unit's power for about ten seconds, then reconnect and test.
Ignition on, press and release programming switch three times,you will hear one chirp ( channel1), press lock button on remote, press and release switch 1 time ( two chirps, channel 2) press unlock button, press and release switch 1 time (3 chirps), press green remote start button, press and release switch 1 time ( 4 chirps),press option button. Turn ignition off, test.
After pressing the corresponding buttons on the remote programming sequence above ,you should hear confirming chirps from the alarm.
The chirping sound is the power supply coming up then breaking down because there is a short somwhere in the high voltage. The most common fail in this area is the horizontal output is shorted ( 237470 ) but what cause this short could be simple cold solder joints or the High voltage transformer ( 239111 ) If you have noway to "ring" the flyback change both parts
Theres a short somewhere in the set. Most likly the HOT is shorted or the vertical IC has caused this in the past. In one case I had shorted convergence IC cause this symptom.. This set is solid state and there are no user serviceable parts inside so please call a trained tech to assist you with this problem Good Luck