My set originally died with 4 blinks. I replaced the Q501 (2SC5426) and my TV now turns on (no more blinks) but now there's no sound coming out of the speakers. I have the L and R wires connected to the board and I know I'm sending audio because I can hear the sound when I connect external speakers on the "Audio Out" jack. I'm suspecting the IC401 that's on a heatsink. I will measure the Vp to make sure I'm powering the IC.
Is there more to the orginal blinking problem that possibly blew something else? Thanks.
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Re: No sound coming out of the internal speakers
I myself do not have a copy of the service manual to see the transistor that you replaced.
I would use a scope and trace the audio path to see where it is stopping. It is possible that the output IC is damaged, but this is rare. It is very possible that part of the distribution from the power supply is also not working. There may be a series resistor or fuse resistor that is opened somewhere if the voltage is missing. If you replace a series resistor that is opened, before turning on the power find out where the short is that caused the damage in the first place.
Turning on the power after replacing parts, and not verifying and fixing the the cause of the failure will usualy lead to the same parts failing again.
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Most televisions have a setting that controls whether the TV uses its internal speakers or sends the sound to the audio out jacks for an external amplifier or speakers. This setting will prevent any sound from coming out of the internal speakers.
Try going through the settings menu and follow through the audio/speaker selections and confirm that the TV is set to use internal speakers.
There is no sound or low volume coming from the television speakers.
Follow this procedure to troubleshoot when there is no sound or low volume coming from the television.
NOTE: Because each of these steps represents a possible solution to this issue, check the television status after completing each step.
Increase the volume of the television.
Ensure the television audio has not been muted.
Ensure no headphones are not connected to the television.
If using a set-top box with a volume control, increase the volume of the set-top box.
NOTE: If the set-top box is connected using an Audio/Video (A/V) connection, ensure that the A/V cables are connected securely to the appropriate video input on the television.
Verify that the MTS settings of the television are set to MAIN or STEREO .
NOTE: If the source device is not set to stereo or is not capable of transmitting a stereo signal, sound may come from one speaker on the TV only, and the volume will
sound low. In this case, adjust or replace the source device.
If the TV has a Simulated effect in the audio menu, turn it off .
Ensure the televisions speakers are not set as the center speaker.
NOTE: Some televisions allow the televisions speakers to act as the center channel speaker when using a multi-channel receiver.
Verify that the speakers are set to ON in the television menu.
IMPORTANT: If the television has audio output jacks and they are connected to a stereo system, then the speakers on the television may be turned off. Some televisions require the internal speakers or the center speaker setting to be off before audio can be sent out to a stereo receiver via the audio out jacks.
Ensure all audio and video cable connections are properly connected to the television.
Test the television using another source like a VCR, DVD player or Blu-ray Disc™ (BD) player.
Reset the television to the original factory settings. To reset your TV to factory settings, turn the TV ON. Then, while pressing the UP ARROW button on the Remote Control, press the POWER button on the TV. The TV will turn itself OFF then back ON.
NOTE: If your remote control does not have a RESET button or the procedure did not reset the TV to the factory default settings, perform a power reset.
If the issue is still unresolved after completing all the troubleshooting steps suggested, service may be required.
1 blink abnormal AU Power Voltage 2 blink abnormal d5v/a9v power voltage 3 blink Abnormal panel voltage 4 blink backlight failure 5 blink abnormal main power voltage 6 blink abnormal speaker voltage 7 blink internal temp. rise 8 times ic5000
Hi, If it is Sony KDF-50E3000 TV then its symptoms of weak Lamp that requires replacement. You can purchase required XL-2500 Lamp from Sony Accessories Store. Always buy Sony Original Lamp for your TV and avoid aftermarket / cheap lamp. Thanks.
Check your TV menu and see if the internal speakers are turned off. Sony opts to cut sound to the internal speakers when you have an external audio amp hooked up for sound, hopefully for obvious reasons. Most audio amp problems inside the TV will result in 9 blinks of the red power light and the TV failing to turn on. If that doesn't help, you may need to have the set repaired.
Do you have menu btton on front of tv if so press menu then use your channel up&down bottons to move to audio then use vol- and vol+ to turn sound on.also check to see if speakers are on internal or external make sure it is on internal speakers. you can go to dollar store buy 4 in one remote controller only 5.00 codes are in book .your code 000