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rusefi / hellenNA6_issues

This is repository for public issue tracking of private HellenNA6 board
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H64b damaged by NA6 vehicle #22

Closed BeerMoneyMotorsports closed 2 years ago

BeerMoneyMotorsports commented 3 years ago

Hellen H64b seems to have bricked while user was installing. Further investigation required. I am sending a replacement and getting this unit back for root cause analysis.

https://rusefi.com/forum/viewtopic.php?f=19&t=2212&p=43224#p43224

BeerMoneyMotorsports commented 2 years ago

Board received.

1- all 4 lights come on dimly but go out. 2- no comms with pc. Including while attempting manual dfu 3- stm32f4 module shows signs of damage BB843C1D-3871-4E88-BF04-EB6DD44A831E 54718976-8889-4012-89B9-671A05386F23

rusefillc commented 2 years ago

@Qwerty-OFF any ideas?

BeerMoneyMotorsports commented 2 years ago

Update- checked and found that component has lifted from the board. I removed it, cleaned and reinstalled. Board now communicates as expected.

I need to know if connecting pin 1N(tps 5v) direct to ground would lead to this failure. i believe customer installed ecu with stock non variable tps still connected.

86B09E92-3CCA-4B18-A087-E0838C1FDA8B

BeerMoneyMotorsports commented 2 years ago

image

BeerMoneyMotorsports commented 2 years ago

Note- There is no circuit protection on any of the +5v outputs.

At minimum, board will need to be updated with polyfuse on each output. Possibly C2830230??

Pin 1N- 1.6 tps 2B- Options Port 3k- 1.8 tps

rusefillc commented 2 years ago

This is https://github.com/andreika-git/hellen-one/issues/119

BeerMoneyMotorsports commented 2 years ago

rev C added circuit protection