PD4045KA Convertor Questions

[Quantum]

1. My convertor is making a whining noise lately. It changes frequency/disappears if 12V devices like lights are turned on. I've tightened all the terminals, but the noise remains. It's this a concern?

2. There is a jumper labelled H4 on the board. There is no jumper on it. It reads jumper off - lead acid, jumper on - gel cell. If I replace my lead acid with an AGM battery, should this jumper remain off, or do I need to find a jumper to install on it?

[sturgissteele]

An AGM battery is still a lead plate battery and therefore you would not need a jumper. Happy camping!

[2edgesword]

Some capacitors and inductors can sometimes emit audible noise. Usually it happens at one particular frequency. That said I don't think it necessarily indicates a pending problem. If the sound were coming from the fan that might indicate the fan is about to go.

[Quantum]

Okay.

The noise was not the fan as the fan was not running when I heard the noise.

I took the board out and used some compressed air to clean it up a bit.

I will reinstall it tomorrow.