I ordered the diode and the capacitor needed for the fan circuit.
Here's the original part for the fan used in 22xx series.
It's a motor blower fan.
PAPST 812 12VDC 2.5W
http://www.qservice.eu/shopexd.asp?id=4356&bc=noI can't find a blower avalaible so should I replace it with an axial fan?
The original part is overpriced and old so I'd prefer a new SUNON fan but right now I can only find axial type.
I guess from nothing even an axial would be better but I'd like some opinion..
I attached the schematic for the fan in case anyone need it.
For the diode I ordered a BYV 26C as stated in this blog post I found here
http://blog.cluepusher.dk/2011/02/16/simple-fan-mod-for-tektronix-2235/ because the service manual for the 2236 doesn't have a part list.