Question about Philips 42PFL7422D 42 in. LCD TV
Symptoms are those of a faulty main controller board. Problem is either a component in terminal connectors circuit (likely a defective capacitor), or a problem in sound circuits area. The first one is more likely the problem. Both circuits are hosted on main controller board. PSU voltages must also be tested before replacing the board. Testing must be done by a technician.
Here the part for /37 model: Philips 310432853753 SSB
Here all parts for this model.
Posted on Sep 13, 2010
The audio fuse is most likely going and will need a replacement there should be a walk through in the user guide if not we can provide one for you
hope this helps
Posted on Sep 13, 2010
I would be having an extra audio cable as an alternative
and/or a troubleshooting guide ( like RCA audio cable )
connect the "Source " audio out to TV audio IN.
or wherever your audio signal out is connected.
Posted on Sep 12, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
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Press and hold the power button again
until it shuts off again.
Once you have verified that AV is working, turn off console, take out AV cables.
Plug in HDMI cable and turn system back on. Switch TV input to HDMI and it will ask you if you would like to use the HDMI cables, select yes again and verify.
If you cannot get sound, again, check the cables..
If new cables do not work, then your HDMI output is going bad, not from use rather normal wear and tear of the motherboard.
To get the best non HD picture, you will need to get some 'component' cables, rather than the standard AV (red, white, yellow).
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