Hi guys;Bought a new T.V (philips 6517)etc including a DAVS 550 for DVD`s + sound. However,when try to play a DVD encounter a loud buzzing from T.V speakers. When I view T.V I use the philips remote to change the channel to EXT 1 and sound comes through the DAV when set at video 2 on DAV. However,whenever play a DVD using the philips remote change channel to SVHS2 which brings up the DVD channel, however a very loud buzzing comes through the T.V speakers and nothing from the DAV speakers. What am I doing wrong or perhaps the question should be how do I fix? Thanks in anticipation of advice.