Fan on top of the amp is going without power

The fan is controlled by a thermo switch . It's located on the radiator and has power going to it always and when temp goes up it grounds circuit and fan come on.

Some systems are just designed like that, especially chinese cheapies. I have an ESC I bought from china and the fan stays on the entire time its turned on, its just to say a few cents not installing a temp sensor and automatic switch.

You have an owners manual with a trouble chart
to follow?

If you pay for service, they won't come for two weeks,
& then leave for a week, until the parts come in

The parts come in one day ,they come back in one week with
them,now you got no dryer for three weeks

Need to diagnose this yourself

If you have the manual & wiring diagram, you may have
to test down to the circuit control board, as I did with a
washer, not a year old

I had no power spike & it failed & all tests passed in the
diagnostic manual,just had to go for the board

Doubt the fan is ruined from the power company issue

The electronics are more likely

First, make sure you plug the power from the fan back into the motherboard & try it again. Did you do anything else besides just pulling out your old hard drive & putting the new one in? The CPU fan is completely independent of the CPU fan. You can start up you system without ANY hard drives & the CPU fan will come on if it's plugged in & the power supply is working etc. If you make sure the fan is plugged in correctly & the fan still doesn't come on, I suggest you temporarily put your old hard drive back in & firing things up. I'm sure you will find that the fan still doesn't work.

All that said, if the CPU fan isn't working (& everything else is), then it's a bad fan or motherboard. It's not necessarily a bad motherboard. Sometimes there are jumpers that control that sort of thing. I'm not sure exactly what that motherboard does. I have had this exact motherboard for years & as long as the fan is plugged in (& the power supply is working), when you start things up, the fan comes on.

One last thought, try flipping the power supply switch in the back to reset the power supply before you press the button in the front. Good luck...

What is the amp rating of the switch? A typical exaust fan motor will draw less than 2 amps and a 60 watt bulb less than an amp so just about any timer switch will work as long as it is rated for 5amps or more.

John

It could be that the fan button is sticking or a contact has welded itself closed therefore its getting power all the time.

Ok so what fans? the case fans? the cpu fan? The power supply fan should always run. The case fan can be wired to the mother board and do an speed step system (slow to fast) depending on heat, same with cpu fan. As for the power light its just an matter of pluging in the wire from frount panel to the mother board pins for pwrled. Asus has an download for your board to get the pin outs.
http://dlcdnas.asus.com/pub/ASUS/mb/socka/sis741GX/e1766_a7s8x-mx.pdf

Yes, and would imply that the amp is powered up all the time.

You should correctly wire your system by

1.Connecting the constant 12vdc input wire to a constant 12vdc source to power the in-dash head units memory.

2.Connecting the switched 12vdc input wire to a switched 12vdc source to power the head units primary functions.

3.Connecting the remote output wire (typically a blue wire) from the in-dash head unit to the correct terminal on the amp, so the amp will only power up when the head unit is on.

4 Remember to run the signal (speaker) wires in a chase separated from the amps power wires, so as to avoid a buzzing noise in the speakers.

5. Always use an in-line fuse on the amp and the head units main power wires.

Note: A properly powered amp will produce a better sound quality then if it were under powered, so be sure to use the proper wire gauge as your amps power supply.

Good luck
Aduz

take out the cooling unit (the fan) and use a cpu fan out of a pc connected to an external power source like a 12v dc/ac adaptor and use it to blow constant cool air through the hole onto the heat sink. i know it sounds like a ruff job but it does work, my amp doesnt even get hot and it plays all night long without cutting out once. you will get noise from the fan constantly on but i just turn it up louder. this is just a ruff quick fix.

You need to change the receiver inside the fan. It is located in the top canopy of the fan. you don't have to buy a new remote just the receiver to save money and match the dip switches to the remote.