Question about Philips 27PS55S 27" TV

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Philips 27PS55S/121 sound level decreases

TV has two problems. 1) When watching DVD's the sound level decreases during the loud parts. You can still hear the sound clearly, but it is frustrating as it takes away from the enjoyment of a movie. The sound from a large explosion or battle scene will be quiter than the sound from a normal conversation. Volume levels will not increase dramatically if I increase TV volume during battle scene. I hae a separate DVD player connectd via the AV1 audio/video RCA inputs in back of set. I tried many different DVD players and the problem remains. Problem does not occur when using external speakers connected via the audio out RCA jacks in back of set. Does not happen when watching cable TV. I think this is because of the drastic volume difference on DVD's. The volume levels on broadcast TV is fairly even, while the volume level on DVD movies will vary drastically. 2) TV will "lock up" occasionally when channel surfing. TV will not respond to remote or any buttons on front of TV including power button. On-screen TV channel number and "Stereo" will remain on...they normaly only remain on for two seconds after changing channels. To resolve issue I un-plug TV from AC power, wait two seconds, then plug back in. TV works fine again. Thank you. It is hard to find people who are kind enough to help.

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Yes, the dynamic range on DVD's is enough to cause the high and low passages to be somewhat annoying but, sounds more like a movie theater. This kind of dynamic range showed up first on Beta HiFi and VHS HiFi VCR's because of thier range as well. If there is a feature in your audio menus on your TV such as "audio expansion, SRS, Wide mode, etc." turn it off and let the audio be processed without expansion of any kind as that will amplify your dynamic range alot more. The lock up issue could be something Philips is aware about and if under warranty contact them. Otherwise not much you can do except manke sure the voltage going to the TV is failry stable between 110 volts and 120 volts. Sometimes dramatic drops and or increases can cause lock up or confusion to the microprocessor in the TV.

Posted on Mar 26, 2007

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Need ninstruction manual mo#27ps55s321


Phillips has the documentation for the 27PS55S/321 on the product support page: http://www.p4c.philips.com/cgi-bin/dcbint/cpindex.pl?ctn=27PS55S/321&slg=EN&scy=US . The direct link to the User Manual is http://download.p4c.philips.com/files/2/27ps55s_321/27ps55s_321_dfu_aen.pdf . There is also a Quick Start Guide: http://download.p4c.philips.com/files/2/27ps55s_321/27ps55s_321_qsg_aen.pdf . You could start at the Consumer Support page, http://www.usa.philips.com/c-m/consumer-support . Then enter the first part of the model number (27PS55S), you can find a number of the similar models listed.

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When did this start? Did it ever work right?

How's the sound from your TV speakers by itself and from DVD? The same? Problem's in the TV.

If it's just the receiver doing it from both sources that's where we start.

Check the settings for dynamic range (ratio of loud sounds to soft sounds) in both your receiver and your cable TV tuner. Many devices have a setting sometimes called "MidNight Mode" to be used in the event you're listening while someone else might be sleeping or otherwise would be disturbed by the TV volume.

The assumption is that you will turn the TV down but that normally means you would lose the quiet programming in the background nosie of your home. Through the magic of dynamic compression the quiter sounds are raised to audibility while loud things like explosions and fanfares will be limited in volume. Depending on the design and whatever the broadcaster is doing to the sound themselves this could be anywhere from pleasingly effective to aggravatingly inconsistent with odd variations in the levels.

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