[SOLVED] CSO - fan staying on

DaveyD
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Re: Kites circuit Sword fan staying on

Post by DaveyD » Wed Feb 14, 2018 11:37 am

I’ve an old analogue multimeter that when testing something seems to show a Little higher than what it should be. So that 4v could be the 3.3v we are looking for. I need to get a digital multimeter to test I properly. Will get one tomorrow and test it again. I’m testing from the right side of R13 to the negative of the battery is that right.

Ps what is the part number of the chip and I’ll look into getting one and seeing if there’s someone near me to do it.
Thanks for this I know your busy and really appreciate you help.

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kite
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Re: Kites circuit Sword fan staying on

Post by kite » Wed Feb 14, 2018 1:44 pm

Ok cool that's alright then it sounds like the CM3 is doing the right thing but I'm 99% sure it's that black chip. The one I used was kind of overkill for the application but it's the IRLML6402 . But you could use any P MOSFET pretty much in place. You should be able to get it from any component suppliers near you or on eBay you can get them in low quantity :)

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Re: Kites circuit Sword fan staying on

Post by DaveyD » Thu Feb 15, 2018 3:37 am

Hi will any of these do the job.

http://uk.farnell.com/search?st=IRLML6402

Looking at the picture and you saying it could be that chip. That chip is right under the corner of the cm3 board I could have crushed it maybe with my first trial fit.

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kite
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Re: Kites circuit Sword fan staying on

Post by kite » Thu Feb 15, 2018 4:14 am

Yep those will work but they are all out of stock, try this instead: http://uk.farnell.com/infineon/bss215ph ... MOSFET%20P (it is BSS215PH6327XTSA1)

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YaYa
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Re: [ISSUE] CSO - fan staying on - under investigation

Post by YaYa » Sun Feb 18, 2018 12:30 am

Subscribing to the topic to be able to mark the issue solved and also integrate this in the future to the wiki

DaveyD
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Re: [ISSUE] CSO - fan staying on - under investigation

Post by DaveyD » Mon Feb 19, 2018 7:12 am

YaYa wrote:
Sun Feb 18, 2018 12:30 am
Subscribing to the topic to be able to mark the issue solved and also integrate this in the future to the wiki
Hi just so I’m keeping you in the loop. I’ve just received the parts today. So now need to find someone to solder for me(to tiny for my skills🤯). Will inform when done and if it sorted the fan out.

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Re: [ISSUE] CSO - fan staying on - under investigation

Post by DaveyD » Thu Feb 22, 2018 9:15 am

Ok. So thanks to my local TV repair Man “Friendly TV” the chip has been replaced and the fan now comes on with startup then goes off. So looks as though everything is working.

Thanks for all your help Kite good luck with everything

Next VMU build I’m watch you for that next :D

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kite
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Re: [ISSUE] CSO - fan staying on - under investigation

Post by kite » Thu Feb 22, 2018 1:06 pm

DaveyD wrote:
Thu Feb 22, 2018 9:15 am
Ok. So thanks to my local TV repair Man “Friendly TV” the chip has been replaced and the fan now comes on with startup then goes off. So looks as though everything is working.

Thanks for all your help Kite good luck with everything

Next VMU build I’m watch you for that next :D
Woohoo! Good work :) glad that was it and that it's all fixed now :) me too once the latest batch are sent off to be made i'll be sorting out the VMU! :)

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