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Old 09-24-2018, 10:03 PM   #21
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Default Re: mosfet question

As I indicated in post 14, more likely that the Gate drive outputs of the IC are bad (stuck on) so the new MOSFETs are damaged.
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Old 09-25-2018, 06:34 PM   #22
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Default Re: mosfet question

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Originally Posted by budm View Post
As I indicated in post 14, more likely that the Gate drive outputs of the IC are bad (stuck on) so the new MOSFETs are damaged.
yep, you were right.. Ordered a new one! ill post up after its fixed (hopefully)
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Old 09-30-2018, 01:26 PM   #23
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Default Re: mosfet question

Welp bud you knocked it out of the park. I pulled that chip and its locked up cock stiff. Changed the mosfets and chip and works a treat... stupid cap must have totalled that thing.. amazing job, you just saved me 1500 bucks.
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Old 09-30-2018, 02:55 PM   #24
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Default Re: mosfet question

Thanks for the follow-up on the repair.
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Old 09-30-2018, 06:37 PM   #25
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Default Re: mosfet question

nice fix well done to all concerned .
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Old 12-20-2018, 12:31 AM   #26
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Default Re: mosfet question

well, i just picked up 2 more of these underwater scooters with the exact same problem.. they are eating the chip and mosfets.. any idea why? one is brand new in the box and is stuck on... the other is only 1 year old..
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Old 12-20-2018, 07:46 PM   #27
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Default Re: mosfet question

Quote:
Originally Posted by Brucetafer View Post
I have a seadoo RS1 seascooter that is stuck on and its pretty basic inside.. I have narrowed it down to a mosfet that is totaled, showing open on all 3 legs. part nmber is FB3306 on both but one has 012p and the other 904p under the part number.. does that make a difference or are they the same thing??

I would take a picture but they one is barely visible under mag glass..
Looks like if the fet is open, you device would not be stuck on, but stuck off.
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Old 12-20-2018, 10:48 PM   #28
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Default Re: mosfet question

Quote:
Originally Posted by Brucetafer View Post
well, i just picked up 2 more of these underwater scooters with the exact same problem.. they are eating the chip and mosfets.. any idea why? one is brand new in the box and is stuck on... the other is only 1 year old..
Maybe just bad design or assembly job that exposed the original parts to excessive stress??
How about your repaired ones? Are they failing too? If not, I'd say design or assembly flaw is the most likely case here.
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