JakeMandragoran
Sorry, i didnt get notification of your post. Its hard to find the correct spot in the situation you are talking about. What i do is put the oil and the graphite under that circuit board. I know you are hesitant about it but thats what i do. Also, sometimes you can gently lift the fan top off and separate the fan. In your situation its trial and error. But i havent yet ruined one of those and i have put the oil and graphite in and around those circuit boards with no problem. Sometimes it doesnt fix the prob but it hasnt ever made it worse for me. So, unless its some weird one of a kind fan i would just go ahead and try it and you may post back with success!
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Before others start posting about how bad it is to get oil or graphite on the circuit board, i dont reccommend it but as a last resort i have done it and either got satisfactory results or no results, never ruined a fan. Again, try putting oil and graphite under or around that circuit board.
Please, no posts about how harmful this is, its not.
mailpup
Air tool oil would probably work since I think its primary function is a carrier for the graphite. Automatic transmission oil probably would also work.
Right on. As i said in my tutorial just about any light oil will do as its only a carrier for the graphite. You dont really even need oil but oil does help the process go quicker and better.
I have posted this tutorial of mine on different sites. I have had oh, maybe 100 replies where my method worked. Maybe one or two where it didnt.
I have repaired fans that were about ready to seize right up and if i recall correctly even fixed seized fans, but this is over a long period of time so my memory may not be perfect, lol. Im not getting younger. But it does work for most people. Just read some of the replies here where it worked for them. And, again, i have put oil under and around where those little circuit boards are and never had a problem where the oil or graphite caused arcing or anything similar. Either it worked or it didnt work is all.