As near as I can tell, there are no loose connections.

But my EZB's internal speaker is having the same issues as the external speaker I attached. Even if there was a connection issue with the new speaker, wouldn't the old speaker remain unaffected?

atleast one wire chould complete cover up with krimp. are these wire all the way thru the holes?

The wires are all the way through the holes, yes.

cover up the exposed wires with some schrink.

I think @Nomad is suggesting you could have a short happening between the two bare wires or an exposed part of the wire and a trace, wirepad or an electrical component.

Also make sure you don't have any solder splash between the two soldering joints you made to the Speaker holes or adjacent traces.

It may be possible you overheated the holes while soldering and damaged the solder pads thus causing connectivity issues between the pad and the trace it's joined to.

You could also have a broken wire.

Another possibility is you have a bad WIFI connection or something interfering or flooding your connection from the computer to the EZB. Make sure your EZB and router are on a uncluttered channel. You can change the EZB channel on its web interface. Your router needs to be done by logging into it's web interface and change it from in there. Get a free WIFI channel scanner app for you phone and find out what the most unused channel is in your area and change to that.

How much other stuff is running through your router on the home network? Is something on that flooding your Wifi connection? If so can you turn something off or get an access point to extend your network? I have one attached to my router with an Ethernet cable and only let my robot and it's computer access through it. Solved all my problems.

Also, how old is your router. Some old routers won't handle the EZB well. When I first started using the EZB back in the early days of the EZ-B v4/1 I had to get a new router that would stay connected and when it did I had poor performance.

there are two solder pads in line  under the wires. would be good to face the wire to the other side.away from thr pads.

"I think @Nomad is suggesting you could have a short happening between the two bare wires or an exposed part of the wire and a trace, wirepad or an electrical component." How do I determine that, and if that's the case, how do I fix it?

"Also make sure you don't have any solder splash between the two soldering joints you made to the Speaker holes or adjacent traces." There isn't, everything's fine on that front.

"It may be possible you overheated the holes while soldering and damaged the solder pads thus causing connectivity issues between the pad and the trace it's joined to." What do I do about that?

"You could also have a broken wire." What about the internal speaker? A broken wire wouldn't adversely affect THAT the same way it would the external speaker, would it?

"Another possibility is you have a bad WIFI connection or something interfering or flooding your connection from the computer to the EZB. Make sure your EZB and router are on a uncluttered channel. You can change the EZB channel on its web interface. Your router needs to be done by logging into it's web interface and change it from in there. Get a free WIFI channel scanner app for you phone and find out what the most unused channel is in your area and change to that. How much other stuff is running through your router on the home network? Is something on that flooding your Wifi connection? If so can you turn something off or get an access point to extend your network?" Didn't understand a word of that. I downloaded channel scanner app, thought maybe I could figure something out from that, but I have no idea what to do with it or what to get out of it. Right now all I've got is the question blaring in my head "How could that be the issue when everything was working just fine before? If I had a bad wifi connection, wouldn't this simply NOT work since the beginning?"

"Also, how old is your router. Some old routers won't handle the EZB well." The router isn't mine to tamper with or replace.

hi bob

can you desolder the wire and solder the other direction?