Question about Philips 42PF7220A 42 in. Plasma Television

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Philips TV will not produce any audio

42PF7421D/37 WILL NOT PRODUCE ANY AUDIO. THE TELEVISION WAS IN STORAGE FOR OVER A YEAR. THE PICTURE IS GOOD; IT JUST WILL NOT PRODUCE ANY SOUND. PLEASE HELP!

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Using the process of elimination ckeck the audio/vidoe (monitor) out, if that works we need to look at the audio output stage, if the tv has a earphone/headphone socket try that, if that works it will be the speaker, if it doesn't it will be either the audio ic (check Dry Joints 1st) or a capacitor in the audio stage, the fact that it's been sitting for a while would indicate a capacitor. it's ahrd to diagnose unless you eliminate the I.F and audio processing stage, also check that you have it set to the right area frequency, eg: depending on where you live, check the selection "NTSC-PAL-Secam" if it's on the wrong selection it maybe that the audio frequency is set to the worng region. Hope that helps with the limited information to work with. Phil

Posted on May 18, 2009

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Posted on Jan 02, 2017

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I know on the plasma TV's it was a matter of updating or downloading and re-installing the firmware/software for the TV to fix the issue. Go to the following page and if the model you have is indeed a 42PF7421D/37 download the software on the page. Make sure you follow the installation instructions to update the software otherwise the set will become a 150 lb paper weight.

&scy=US&slg=AEN&sct=LCD_TV_SU&cat=TV_CA&grp=SOUND_AND_VISION_GR&session=20091111140139_64.85.227.44&ctn=42PF7421D/37&mid=Link_Software&hlt=Link_Software">Philips Support Page

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Hi, sounds like a Philips flat panel could not find a manual for this model, if you have tried both DVD and cable box and both produce no audio. & check the speaker is turned on in the menu of the TV. then you have a problem in the audio amp circuit of the TV, Philips had a problem with some back in 2003 and it was the SSB board that needed repair or replacement. It may be cheaper to just buy a stereo surround system and run both cable box and DVD straight to the surround system.
sorry could not be of more help.
gd lk
Eric

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