Fan on bass head is noisy

Thanks for letting us know.

 

Hey welcome to TB.
Don't let that great first answer put you off.........
Check for dust build up. You might need a can of compressed air - not fader lube (read the label) or a quick turn with your vacuum. If it's clean inside I'd guess a loud whirr is the beginning of the end for the fans bearings or races.
If a home fix doesn't work find a local repair center ([email protected]) or simply play louder.
It shouldn't be an expensive job.

 

Is that whirr an electronic whirr audible through your speakers?

 

Tell her to stop sitting on your amp, and cut down on the chatter.
But seriously...is it mounted in a way that you can disassemble it from the head cab? Even if it isn’t, and you have get into the insides, yes, compressed air blow out is a good thing, should be a part of your periodic maintenence. If you can get to the hub of the fan blades, the slightest shot of WD40, or the smallest drop of 3in1 oil, wouldn’t hurt either.

 

Contact the manufacturer, they will have the best information specific to your amp.

Never use WD-40 as a bearing lubricant, that's not its purpose and will quickly become gummy and create a bigger mess. Wd-40 belongs far away from electronics.

 

IME failing fans in electronic gear are best replaced and I rarely see any that were built to be repairable - especially when they fail mechanically. Since thermal management is a key design consideration in electronic gear, and the fan's specifications were calculated as part of the thermal management approach, I would always want to use manufacturer supplied or approved replacement. Unless it's an obvious and simple plug and play job or you are a qualified tech, I would recommend having a technician replace the part.

 

Play louder?