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Smoked Novak GTB
Posted: Tue Apr 09, 2019 9:44 am
by KidAgain
Re: Smoked Novak GTB
Posted: Mon Apr 15, 2019 12:36 am
by tamiya
You've likely blown 1 or 2 of the 6 drive channels.
Does it still work in Brushed configuration?
Be careful about using it though... sometimes the blown FET is stuck 'on' and conducts, which heats up the heatsink even if ESC seems to work ok.
No idea if anybody fixes them anymore. Could be possible to unsolder & replace FETs but short of having another junk GTB to harvest good parts off, dunno where to source spare chips.
Re: Smoked Novak GTB
Posted: Mon Apr 15, 2019 8:53 am
by KidAgain
tamiya wrote: ↑Mon Apr 15, 2019 12:36 am
You've likely blown 1 or 2 of the 6 drive channels.
Does it still work in Brushed configuration?
Be careful about using it though... sometimes the blown FET is stuck 'on' and conducts, which heats up the heatsink even if ESC seems to work ok.
No idea if anybody fixes them anymore. Could be possible to unsolder & replace FETs but short of having another junk GTB to harvest good parts off, dunno where to source spare chips.
Yah bud I just tossed it in the spare parts bin, looks like the bottom row of chips burnt to a crisp. Was still working but it had real bad cogging and stinks baaaaaaaaaaaaaaaaaaaaaaaad.
Re: Smoked Novak GTB
Posted: Mon Apr 15, 2019 9:27 am
by jwscab
If you can take a really clear picture of the bad row and the good rows, we can see if replacement parts are available. I just fixed an associated esc by replacing all the fets.
Re: Smoked Novak GTB
Posted: Tue Apr 16, 2019 9:00 am
by KidAgain
Here you go bud............................ugh doesn't look clear enough ill try tonight..
Re: Smoked Novak GTB
Posted: Wed Apr 17, 2019 8:05 am
by matt1ptkn
I've done this before. Crazy enough, my new ESC had the Tamiya battery plug polarity reversed.
Never even occurred to me to check that. I tried to contain the magic smoke for re-installation later, but no luck.
That looks like a very tricky and tedious job to replace the burnt components. Good luck!
Re: Smoked Novak GTB
Posted: Wed Apr 17, 2019 10:29 am
by KidAgain
Yup the genie (smoke) definitely escaped the esc and she smelled really bad lol.
Re: Smoked Novak GTB
Posted: Wed Apr 17, 2019 11:18 am
by jwscab
it's not terrible with the right tools. However, I'm not having much luck trying to find an equivalent mosfet based on those numbers. the symbol roughly centered on the left, is that an 'S' or 'R' or something else? ST is a possibility.
Re: Smoked Novak GTB
Posted: Thu Apr 18, 2019 8:47 am
by KidAgain
jwscab wrote: ↑Wed Apr 17, 2019 11:18 am
it's not terrible with the right tools. However, I'm not having much luck trying to find an equivalent mosfet based on those numbers. the symbol roughly centered on the left, is that an 'S' or 'R' or something else? ST is a possibility.
I'll check tonight bud.......................
