MARTIN !!!! Still around ?
First things first : thumbs up for your incredible collection of old Tek scopes !
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif)
I am posting in a desperate attempt that maybe you could help me with.... the restoration of my first tube scope, a Tektronix 317.
I have it pretty much sorted by now, but I am having a problem with something silly which drives me nuts : the motor for the cooling fan.. it's "lazy". It starts first time no worries, but it spins only very slowly. Sometimes, after a while, which can be anything between 5 seconds to 5 hours, suddenly it will decide to spin faster and actually move some air.
I did quite a lot of work on this motor, but I am running out of ideas now... I am about to give up but thought well, why not ask Martin about it ! Maybe it's a common problem and you can enlighten me in some way about it.... even if it's not fixable, just knowng what's wrong with it would make me kinda happy.
Here is the link to my topic on this scope, if you find the time some day :
https://www.eevblog.com/forum/repair/vintage-tektronix-317-repair-and-restoration/msg1356218/#msg1356218In the mean time, I will start cleaning the scope, using all the tips I read on here...