Solar charging problems

[Websurfer]

I have a 2000 Pace Arrow Vision that I can`t get the solar charging system to work anymore. Fleetwood dealer replaced the circuit board in the battery control box because they said it had a bad relay.They installed an updated board and it still wouldn`t work. So they said the new board was not compatible with the original solar panel(????) Put a new solar panel on the roof but left the old one in place.Then it barely worked for about a year. The little red LED just barely glowed. Now the whole thing has quit completley. Let it set for about a week or so with the batteries on and they go dead. Any ideas on this? What controls the solar charger anyway? The old solar panel is still putting out 12 volts but if I plug it back in,nothing.

[chuckftboy]

You may have a failed diode which would explain why the batteries drain down. Would the batteries go dead in a week if the panel was disconnected? Some panels have a built in diode or it may be in the charge board. You might try reversing the polarity, just a thought. When I replaced my panel with a different brand, it would not charge until i switched the pos. and neg.

[Websurfer]

If I turn the batteries off they stay up OK. These other things you suggest are beyond my knowledge. But thanks anyway.