I have a philips Matchline tv (29pt6361/79r) the tv works fine except it automatically turns the volume down without any buttons on the remote or tv being pushed

Yes this is a common problem in this model and it's almost always a bad tact switch, omne of the front diplay buttons,it won't seem bad to the touch but they make internal contact intermitantly and cause an outward symptom like the volume going down. confirm for me you do see the on screen display bar for the volume going down.also if you try with remote to turn up while it's going down does it seem to fight to try to turn back up the volume usually just causes the volume to stop as long as you hold the vol/ up button down. please confirm these things for me. Yes this is a common problem in this model and it's almost always a bad tact switch, omne of the front diplay buttons,it won't seem bad to the touch but they make internal contact intermitantly and cause an outward symptom like the volume going down. confirm for me you do see the on screen display bar for the volume going down.also if you try with remote to turn up while it's going down does it seem to fight to try to turn back up the volume usually just causes the volume to stop as long as you hold the vol/ up button down. please confirm these things for me.

OK you have a bad switch very common problem in this model and very repairable--when i do these i change all 4 switches on that panel.. now the model number you gave did not come up on the philips web site. I am an auth. service center and have full access to manuals and parts listed. my guess was 27pt6341/07 if that is your model# then the location numbers for the switches called "tact switchs" you will be able to use the model number and location number to order parts from a dist. vol+ loc#1011

VOL- LOC#1012 CH+ LOC#1013 CH- LOC#1014

These parts are solder work to change. Good Luck

ps if you confirm you gave me a good model # than it may be an overseas model not listed on the North American web portal which ever when you order parts use your confirmed good model number and location numbers OK you have a bad switch very common problem in this model and very repairable--when i do these i change all 4 switches on that panel.. now the model number you gave did not come up on the philips web site. I am an auth. service center and have full access to manuals and parts listed. my guess was 27pt6341/07 if that is your model# then the location numbers for the switches called "tact switchs" you will be able to use the model number and location number to order parts from a dist. vol+ loc#1011
VOL- LOC#1012 CH+ LOC#1013 CH- LOC#1014
These parts are solder work to change. Good Luck
ps if you confirm you gave me a good model # than it may be an overseas model not listed on the North American web portal which ever when you order parts use your confirmed good model number and location numbers