falcon fan header MOSFET not working

[Johndill]

I was adding a little fan to the fan header so it would be controlled be the system(as I have done before with no problems) and the header MOSFET has died so the fans don't work at all, crossing the 2 points of the MOSFET makes it work but at full speed, I tried taking the MOSFET off a spare broken console but from the difficulty of taking it off it broke, so is it ok to just cross the 2 points of the MOSFET to make it work? need help asap.

this is not my video, it is an example https://www.youtube.com/watch?v=_olpNcw9qp0

Thanks in advance

also, I fixed it from rrod and found it is jtagable dash 7363 :-D

 

[Johndill]

I'll be online for 1 hour

 

[XDK]

replace mosfet best bet.. heatgun ect is best.. or a hot air station with a small nozzle

 

[gavin_darkglide]

look into chip quick. or a hot air method.

 

[B-Stard]

Hi

I have same problem with my Falcon, dvd goes to open tray , did replace MOFSET under board which helped so dvd is working again, but then i saw that fans are not working, replaced also MOFSET under fan plug which helped and fans started working. But problem is once i pluged in dvd, fans stopped working again. Falcon is original without any mods, anyone knows what should i check what is killing my MOFSETS.

Thanks

 

[XDK]

Hi

I have same problem with my Falcon, dvd goes to open tray , did replace MOFSET under board which helped so dvd is working again, but then i saw that fans are not working, replaced also MOFSET under fan plug which helped and fans started working. But problem is once i pluged in dvd, fans stopped working again. Falcon is original without any mods, anyone knows what should i check what is killing my MOFSETS.

Thanks

suggestion, start your own thread instead of hijacking someone else's

 

[Johndill]

I can do heatgun but I don't have a replacement mosfet, in the mean time would it be ok to cross the 2 points of the mosfet so it runs full speed?

 

[Neoglicher]

best thing to do is replace the mosfet by a more powerful one ( handling more current) .

BTW what is your new fan electrical specifications ?

 

[Johndill]

best thing to do is replace the mosfet by a more powerful one ( handling more current) .

BTW what is your new fan electrical specifications ?

the fan that worked fine in another console is DC12V 0.15A, the fan that blew the mosfet in this console is DC5V 0.25A

if it's not clear, I'm adding a little fan that runs off the header with the stock fan

 

[Neoglicher]

the fan that worked fine in another console is DC12V 0.15A, the fan that blew the mosfet in this console is DC5V 0.25A

if it's not clear, I'm adding a little fan that runs off the header with the stock fan

In this replace the 5 dc with 12 dc .

 

[Johndill]

would it be ok to solder across the 2 points of the mosfet so it runs full speed like in the video in the first post?

 

[Neoglicher]

would it be ok to solder across the 2 points of the mosfet so it runs full speed like in the video in the first post?

Try first with same plug/new mos , if everything goes well , stay with that , if the mos burns again , change it with another one with higher specs than the current one ( look for a higher Id "drain current" and a lower "Rds on" )

 

[Johndill]

Try first with same plug/new mos , if everything goes well , stay with that , if the mos burns again , change it with another one with higher specs than the current one ( look for a higher Id "drain current" and a lower "Rds on" )

The current mosfet is MJD210 H42, I don't know anything about them, can you tell me witch one to get?

 

[Neoglicher]

I took a look at the datasheet and i can say that this transistor is good and there is no need to change it .

So now if we have two fans from same source :

12V(0.15+0.15)= 3.6 watts with can be easily supported by the transistor ( 12 watts limit)

Just use the fan connector and feed the two fans at once from it , but make sure you respect the polarities , usually black is negative , red is positive , other color is for PWM .

 

[Johndill]

I took a look at the datasheet and i can say that this transistor is good and there is no need to change it .

So now if we have two fans from same source :

12V(0.15+0.15)= 3.6 watts with can be easily supported by the transistor ( 12 watts limit)

Just use the fan connector and feed the two fans at once from it , but make sure you respect the polarities , usually black is negative , red is positive , other color is for PWM .

So your saying it's fine to run the 2 fans from the fan header? if so, that's fine but the problem is the fan header has no power to it.

 

[Johndill]

I took a look at the datasheet and i can say that this transistor is good and there is no need to change it .

So now if we have two fans from same source :

12V(0.15+0.15)= 3.6 watts with can be easily supported by the transistor ( 12 watts limit)

Just use the fan connector and feed the two fans at once from it , but make sure you respect the polarities , usually black is negative , red is positive , other color is for PWM .

So your saying it's fine to run 2 fans from the fan header? if so, that's fine but the problem is the fan header has no power to it. :-(

SORRY for double post, my internet dropped and I clicked post again

 

[Utmad]

I am sure if you ask on here someone will take a mofset of a dead board for you, had same problem on a jasper once.

 

[Neoglicher]

So your saying it's fine to run 2 fans from the fan header? if so, that's fine but the problem is the fan header has no power to it. :-(

Replace the transistor and try the two fans from same header , should work fine .

 

[Johndill]

I am sure if you ask on here someone will take a mofset of a dead board for you, had same problem on a jasper once.

If any Australians could, that would be helpful

 

[Johndill]

But for the time being, is it ok to solder across the mosfet so the fans are full speed so the console can be used?