MacBook, New Logic board no fan

[jw 1]

Hello, I just replaced my 2.2Ghz MacBook logic board with a 2.4Ghz 661-4709. I noticed that the fan is not coming on. Is this a compatibility issue? I tried a used 2.4Ghz board and the fan worked fine however the computer would not boot. I returned the board and purchased a new board and now the fan will not come on. The computer boots right up and everything (that I have tested) works fine. Everything except the fan. All the connections appear to be the same??? Any suggestions?

 

[jw 1]

After closer inspection the fan appears to be working but it is very slow. Anyone know if his is normal? I had the fan hooked to another board ant it appeared to operate at a faster speed.
Thanks.

 

[jw 1]

What should the fan speed be when the MacBook first starts?

 

[HikariYuki]

Well I have a mid 2009 macbook pro and the default fan speed is 2000 rpm.

 

[Patrick J]

Fan is max 6000 min 2000.
Install a stat utility like iStat that will allow you to monitor fan speed. IT might be on but very quiet.

 

[jw 1]

Fan is max 6000 min 2000.
Install a stat utility like iStat that will allow you to monitor fan speed. IT might be on but very quiet.

OK. I'll check that out. I purchased a new fan just in case.
Thanks for the information.