Repairing a Jetcat ECU
#79
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RE: Repairing a Jetcat ECU
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
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
#81
My Feedback: (5)
RE: Repairing a Jetcat ECU
ORIGINAL: 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
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
#82
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Join Date: Oct 2008
Location: bernardswillerbas rhin, FRANCE, METROPOLITAN
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RE: Repairing a Jetcat ECU
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
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
#84
My Feedback: (5)
RE: Repairing a Jetcat ECU
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
P.S Diagram not for JETCAT but use the same type TRN.
#85
My Feedback: (2)
RE: Repairing a Jetcat ECU
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
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
#86
My Feedback: (2)
RE: Repairing a Jetcat ECU
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
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
#87
My Feedback: (5)
RE: Repairing a Jetcat ECU
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
http://www.utsource.net/ic-datasheet/431AC-436378.html
#91
My Feedback: (2)
RE: Repairing a Jetcat ECU
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
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
#93
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Component name
The component is : YM78A diode smd
I have no Idea of the specs....
#94
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Ym78a
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.
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.
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....
The component is : YM78A diode smd
I have no Idea of the specs....
#95
My Feedback: (10)
basimpsn,
Thank you for sharing the schematic!
Do you have and would you share the schematics for the other boards in the ECU?
They would be a great resource.
Peter,
I tried to find a cross for the BYW20E and all I could come up with was a bridge rectifier in a rather large package.
Are you sure about the number?
Thanks, Whizbang
Thank you for sharing the schematic!
Do you have and would you share the schematics for the other boards in the ECU?
They would be a great resource.
Peter,
I tried to find a cross for the BYW20E and all I could come up with was a bridge rectifier in a rather large package.
Are you sure about the number?
Thanks, Whizbang
#97
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ECU v10 short circuit problem
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...
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...
#99
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