No serial commands

[davisgraveyard]

I have another AP-16+ that has a sound file on it that I play through a serial command from a Prop1.  This has been working flawlessly for years.   All of a sudden the file is no longer playing.  The setup has a DC16 plugged into the AP-16 and the AP is wired to the Prop1 serial.  The DC16 commands are working fine.  If I press the reset button on the AP-16 it plays the file once.  But it is like it is ignoring the serial commands from the Prop1.  I haven't changed anything in this setup.  What would be causing this?  I've replaced the Prop1 and get the same results.

Jeff

[davisgraveyard]

After a little more testing I am able to get the sound file to play buy pressing a flat head screwdriver on the 2 dip switches A1 and A0 set to on. If I press them forward real tight with the screwdriver the audio starts playing.

Sounds like a corroded dip switch contact?

Jeff

[bsnut]

That makes since. You can try to replace dip with a new one by soldering the new one in if you want.

[JonnyMac]

Could be, but those switches are designed for bad environments. Toggle it back and forth several times to see if you can make it clean.  Also....

-- Make sure the firmware is the latest version
-- You can use $FF as the address in your AP-16+ commands if you're only using one (this is the global address)
    * this does not work with any command that provides feedback (e.g., version and status)