Sounds like some thing is oscillating that's not supposed to - needs to be addressed by someone with the proper test bench and schematic.
On Fri, Feb 2, 2018 at 8:17 PM, clay monroe via Mercedes < mercedes@okiebenz.com> wrote: > The victim is a Grand Prix 754. PnP find from last year, installed, > decoded and playing for seven months. A few months ago, change of > seasons…. the speakers would just screech, blocking any good sounds. It > would come and go, but seemed most coincident with cool damp days. Would > squeal for a day, then make good radio noises for a week or more. Now the > banshees have taken up house. > > I pulled the becker out and checked to see if it was speakers or wires. > Pulled the plugs out and no noise. Put them back, it is noise. Move it > around and still bleats. I swapped out other speakers, still plugged into > car power, still makes the shrill retort. Maybe the trouble is from the > battery. Bench test using test leads and speakers, and no better. > > I guess it wants to visit NJ. I would rather find a good one from PnP. > > > clay > > 1974 450sl - Frosch - Two tone green > 1986 SDL - Polei > 1982 300 SD - Allen > > retired models- > 2002 s430 - Victor, a Stately & well tailored crap > 1976 300D - Blei Vanst - it looks silvery > 1972 220D - Gump - She was green, simple and ran > 1995 E300D - Gave her life to save me against a Dame in a SUV > POS 1987 SDL - Beware Nigerian Scammers > > > > > > > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > -- OK Don *“Travel is fatal to prejudice, bigotry and narrow-mindedness, and many of our people need it sorely on these accounts.”* – Mark Twain "There are three kinds of men: The ones that learns by reading. The few who learn by observation. The rest of them have to pee on the electric fence for themselves." WILL ROGERS, *The Manly Wisdom of Will Rogers* 2013 F150, 18 mpg 2017 Subaru Legacy, 30 mpg 1957 C182A, 12 mpg - but at 150 mph! _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
