I have inherited from my dad this wonderful amp (it used to be mine till I have it ti him) and my idiot incompetent brother had taken it to bits. I have rebuilt it (surprised myself there) so it works for a short time then cuts out due to that cut out switch, sounded great. My problem is the fans were just in the box loose and I do not know where to connect them. I have seen the nice line diagram put on here and I worked out where one of the fans connects but I cannot work out where the other wire goes. I tried to put a picture on here but I could not work out how. Can anyone help me please.
How to attach images to your posts.
Let me know if you are still unable to upload pictures after trying this.
Let me know if you are still unable to upload pictures after trying this.
Three wire cooling fans like computer fans have a positive -negative and a sensing wire but so far no A100 (X) schematic nor the fans connections .
You could just run it permanently.
You could just run it permanently.
Thank you but I have just one brown wire from each motor and they are connected to each other by a yellow wire and a blue wire which has a 33 micro farad cap in line. They are 12v 50 htz motors and I am unsure if they should just be connected across the + and - inputs onto the board, I don't want to hurt the old dear. 🙂
If they are AC motors then use a 6V AC source to test them at half the voltage they should run slowly I just thought it was logical in a power amplifier to use DC fans .
It sounds like the motors are wired in series, which means they would expect 24V power. That is probably the AC secondary voltage of one of the transformer windings.
