Yesterday morning I noticed I had no lights on the indoor controller. After doing a bit of research, I discovered I had a blown fuse on the back of my controller circuit board. I ordered a bunch of fuses which arrived today.
I replaced the fuse and the transformer made a humming noise and the fuse blew right away. I disconnected things, first all the JVA's, then everything else. Each time the fuse blew. I finally found a troubleshooting chart that said after disconnecting the JVA's if the fuse still blew, remove both relay chips. After some research, I decided that they were referring to the two socketed ST micro uln2803a chips which I cross referenced as Jandy 3814. I actually have an old chip puller so I removed them after taking pictures of their orientation. The fuse still blew.
This is where things went (further?) south. I carefully replaced the chips. I double checked the pins and orientation. I turned on the breaker and the fuse did NOT blow...but the system didn't light up either!
Now, when I check the transformer input to the circuit board (on the two yellow wires), I'm only getting a couple of volts where I had previously gotten 26V. When I flip the circuit on I no longer get a loud hum from the transformer and the fuse doesn't blow but the system isn't working.
Did I somehow blow the transformer? Could the multiple tries (where the transformer buzzed each time) have killed it?
Any suggestions on next steps? The troubleshooting guide indicates the Power Center PCB. Do I also need a transformer. Would you replace the transformer first?
I appreciate any help!
I replaced the fuse and the transformer made a humming noise and the fuse blew right away. I disconnected things, first all the JVA's, then everything else. Each time the fuse blew. I finally found a troubleshooting chart that said after disconnecting the JVA's if the fuse still blew, remove both relay chips. After some research, I decided that they were referring to the two socketed ST micro uln2803a chips which I cross referenced as Jandy 3814. I actually have an old chip puller so I removed them after taking pictures of their orientation. The fuse still blew.
This is where things went (further?) south. I carefully replaced the chips. I double checked the pins and orientation. I turned on the breaker and the fuse did NOT blow...but the system didn't light up either!
Now, when I check the transformer input to the circuit board (on the two yellow wires), I'm only getting a couple of volts where I had previously gotten 26V. When I flip the circuit on I no longer get a loud hum from the transformer and the fuse doesn't blow but the system isn't working.
Did I somehow blow the transformer? Could the multiple tries (where the transformer buzzed each time) have killed it?
Any suggestions on next steps? The troubleshooting guide indicates the Power Center PCB. Do I also need a transformer. Would you replace the transformer first?
I appreciate any help!