sortegon

My Feedback: (9)

Replaced the fet and drivers for the starter
(N06HD,Ndt456,fmmt4401)

Xairflyer

My Feedback: (1)

was that all the five main components on the fet side of the board?

Was about the other side?

sortegon

My Feedback: (9)

The fmmt is on the back side. Its a tiny surface controler.

kalischek

Hello

I'm facing thae same problem all is working on the ECU except the pump. I have changed all the param (voltage to make sure even with higher voltage it doesn't work) so I have tested the transistor that are ok does someone have a schematic of the ECU version 6 ?
I think the problem can't be a big one but without schematic I have to spend few day's just to build up a schematic trying to understand the connexions on the board and we have 3
One with the CPU memory and eeprom
the second is the high current output stage
and the last is all the sensors and i/O needed for that ECU

Or if someone has a last test to propose I'm ready to do before jumping in the transistor and AOP storry

Thanks in advance

BaldEagel

Silly question I know, but have you tested the pump to see if it runs off a 6 volt battery?

Mike

basimpsn

My Feedback: (5)

If you already tried Baldeagel pump test , then go back to post # 33 and try my test. Its the same for ,Pump,Glow& Starter

kalischek

Hello

Thanks for your responses the pump run fine I have tested with 1.2V and turn fine
The transistors are ok I but i think there is a process that doesn't drive the transistor (a protection or ...)
I have done a mesurement with the scope and can see pulse coming 2 or 3 of few ms and than finish
I think there is a loop that control the current or ... I think i should have the schematic of the board because there is a pwm controler that will have in charge to control the voltage of the pump and I don't see anything when I try to make a test when I am in the test menu that is normaly used to purge the kero

If someone has some idea they are welcome I am electronic eng so i can understand and do a lot but if you don't know the state machine behaviour it is a little difficult

Thanks in advance
Regards

KC36330

the processor has to see RPM and EGT before it energizes the pump, might be worth while to check those too.

basimpsn

My Feedback: (5)

Looks like you did your home work . I don't think there is a loop or fail safe circuit that could stop the PUMP TEST FUNCTION from working. The driving (pulse width) sometime comes directly from the Micro Processor. I once found a open circuit from the CPU to my glow plug TRN.

P.S Diagram not for JETCAT but use the same type TRN.

coolt5

My Feedback: (2)

Hi all

i have the same ecu 5.0v and i was trying to start my engine when i notice a smok coming from the ECU so i take it a part and notice the no1 in the Picture was burn so i take it to my frinde to check it for me and he ask me to git another one so he can replace it . also hey find the no2 in Picture its short also. hey ask me to replace it too.

is that mine it have to do somthing togither .
also what is the part no for no1 in Picture .
and from wher i can order them pls.


thanks in advans
SAM

coolt5

My Feedback: (2)

just for your info:

also the story start like this 1st:



My p80 that I have for a 1 year’s already
I tried to run it and its propene start so when the sequence start after the ignition and engine go to 5000 rpm there is a fire in the Combustion chamber the engine dos not spoall up and I think it’s the fuel dos not go to the engine so I take the fuel bomb out and tray it its work only when the volte go’s 0.600 and up but lees than that it’s not working when u tray to test it from GSU ….. Is that normal or it should work from a lower voltage

last time engine run was alomst 8 mintes.

and i didnt get over temp alarm. or the preheating

also i get acceleration delay

also its just run with propan only no fuel go to the engine


Thanks in advance

basimpsn

My Feedback: (5)

We try to fix this problem sometime ago by looking at pictures but got no where. As for #2 looks like a 5v regulator try this web site. #1 could be anything,(JETCAT PART#) its up to your tech to determined if its a npn, pnp, two diode together or Fet. Good Luck

http://www.utsource.net/ic-datasheet/431AC-436378.html

coolt5

My Feedback: (2)

this picture from a jetcat p80 and i need to replace the small cheeps insaid the jet board so if anyone ever open his jet before or know the part no# of this pls let me know

or post a picture hear

thanks in advance

DrScoles

My Feedback: (18)

Cool thread. Bunch of guys from around the world trying to help each other out! This is way beyond me, but fun to watch and find out if things get fixed.

basimpsn

My Feedback: (5)

First are you having a start motor or a RPM problem?

coolt5

My Feedback: (2)

No sr
The only problem is I solder the lipo battery in reverse of + and - so when I connect the battery to the ecu it smoked and I open it there was a small voltage filter cheap burn so I replace it with the same no on the cheap and test everything is ok
So when I try to rotate the motor by the ground unite it rotate for 5 seconds and the smoke come from this bord in the engine as u can see in pic.
that the hole story.
And the engine was working fine before that

basimpsn

My Feedback: (5)

Need a better picture of the burn component. could be a protective diode or a EMF blocker to the FET transistor. Remove the bad part and re-test the ECU, and go from there.

mgsanna

I've seen the picture now the component is a protection diode smd, it's burned because the motor was in non declutch or late declutch, this diode is used in case the o-ring and the motor remain clutched to the little purple spinner, the turbine run and the little motor produce current like a generator, and sent back current to the whole system smoking everything......

The component is : YM78A diode smd
I have no Idea of the specs....

viperman78

Hello,

Same problem over here, this part burned out from my P80 after trying to let the startermotor run with a 2s lipo on the starter motor contacts.
I try to searth on the P/N YM78A, but nothing found, exist there an alternative P/N, or an other way to order this?

Thx guys.

Edwin.

digitech

My Feedback: (10)

you want the bootloader , hexfiles and sources also?

i3dm

My Feedback: (51)

stringchi

Hello firends,
I Bought a jetcat turbine, but when I plug another battery pack my ecu sparked, and it didn't work. I am electronic engineer, I opened the ecu pack, and I found a burned diode or Cap in input of circuit, I think this diode is for voltage protection, I take out the burned component, and Ecu work very well. but I want to buy that component and replace to burned component place, Is it possible for you to send that component number? I will buy it from here. that component is near power input



thank you in advanced...

basimpsn

My Feedback: (5)

"but when I plug another battery pack my ecu sparked" Whatever battery voltage that was just buy a zena diode with the same voltage and replace the damage one.

stringchi

here is my ECU, is it a zener diode? are you sure. no one has this ECU v10? If you have, please read this component number and tell me.

Thanks

stringchi