Repairing a Digiplex
Repairing a Digiplex
Digiplex on my Paso 906 did not work correctly cause to intermittent problem on vertical cylinder ignition.
Therefore, I have opened the box and I have detached all connections from circuit to the framebox.
Inside it I found the circuit completely covered with a protective rubber plus 2 big transistors. I suppose the problem was one of final power transistors. I frozen over/around it with electronic circuit refrigerant gas and immediately the vertical cyl begin to run.
Quickly, I run to buy two new transistors (BU931ZP – price € 4.50), replaced it but, with great disappointment, the vertical cyl did not work fine.
Therefore, without fear, I began to remove delicately, with a toothpick, the rubber from the circuit.
I found few electronics components under the rubber and many great lines from the transistors to external pin 10 11 12 (pin towards the coils).
When I freeze one of this lines, vertical cyl begin to run.
Sure and happy to have solved the problem, I have solder bridge from transistors (which one link to pin 11 - vertical cyl) to external pin and all it has worked.
I Am much happy, Ciao a tutti
P.S. in the afternoon I post same photos
Therefore, I have opened the box and I have detached all connections from circuit to the framebox.
Inside it I found the circuit completely covered with a protective rubber plus 2 big transistors. I suppose the problem was one of final power transistors. I frozen over/around it with electronic circuit refrigerant gas and immediately the vertical cyl begin to run.
Quickly, I run to buy two new transistors (BU931ZP – price € 4.50), replaced it but, with great disappointment, the vertical cyl did not work fine.
Therefore, without fear, I began to remove delicately, with a toothpick, the rubber from the circuit.
I found few electronics components under the rubber and many great lines from the transistors to external pin 10 11 12 (pin towards the coils).
When I freeze one of this lines, vertical cyl begin to run.
Sure and happy to have solved the problem, I have solder bridge from transistors (which one link to pin 11 - vertical cyl) to external pin and all it has worked.
I Am much happy, Ciao a tutti
P.S. in the afternoon I post same photos
Last edited by Asterix on Tue Oct 14, 2008 1:46 pm, edited 1 time in total.
-
- paso grand pooh-bah
- Posts: 1527
- Joined: Thu Jun 21, 2007 12:00 am
- model: 907 I.E.
- year: 1991
- Location: Gothenburg, SWEDEN
Re: Repairing a Digiplex
Well done, thx f sharing!
Looking forward to pics.
Looking forward to pics.
Gert
907 I.E. -91
M900 -97
MTS 1100s -07
907 I.E. -91
M900 -97
MTS 1100s -07
Re: Repairing a Digiplex
Some pic of Digiplex inside,Tamburinifan wrote:Well done, thx f sharing!
Looking forward to pics.
circuit without rubber
bridge to solve problem on my digiplex
- jcslocum
- paso grand pooh-bah
- Posts: 1714
- Joined: Mon Jul 19, 2004 12:00 am
- model: 750 Paso
- year: 1988
- Location: Eastern Shore, MD
- Contact:
Re: Repairing a Digiplex
This shows the lenghts folks will go to keep their Pasos running.
Help and electrical fool understand something. Why does freezing the circuit make it work??
Help and electrical fool understand something. Why does freezing the circuit make it work??
Re: Repairing a Digiplex
Often, when defective semiconductors are warm do not work,jcslocum wrote: ... Why does freezing the circuit make it work??
also warm defective circuit line (for thermal expansion) are interrupted,
freezing them could momentarily work.
This technique is normally used to find broken off component on electronic circuits.
-
- paso grand pooh-bah
- Posts: 1527
- Joined: Thu Jun 21, 2007 12:00 am
- model: 907 I.E.
- year: 1991
- Location: Gothenburg, SWEDEN
Re: Repairing a Digiplex
, FAQ material!
Do you have a wiring schematics of the Digiplex as well?
Do you have a wiring schematics of the Digiplex as well?
Gert
907 I.E. -91
M900 -97
MTS 1100s -07
907 I.E. -91
M900 -97
MTS 1100s -07
Re: Repairing a Digiplex
unfortunately not. I have asked to Magneti Marelli but nobody has answered.Tamburinifan wrote: , FAQ material!
Do you have a wiring schematics of the Digiplex as well?
-
- paso grand pooh-bah
- Posts: 1527
- Joined: Thu Jun 21, 2007 12:00 am
- model: 907 I.E.
- year: 1991
- Location: Gothenburg, SWEDEN
Re: Repairing a Digiplex
So how did you know to make additional wire in pic 2?
Gert
907 I.E. -91
M900 -97
MTS 1100s -07
907 I.E. -91
M900 -97
MTS 1100s -07
Re: Repairing a Digiplex
In italy it is said “FATTORE C” (traslate => “B FACTOR” B=BUM/BUNS/BATTOM), a stroke ok lucky.Tamburinifan wrote:So how did you know to make additional wire in pic 2?
Cause intermittent fault, I have tried with same bridge (additional wire) to reinforce
the circuit line toward vertical cylinder transistor and toward external pin 11 (vertical cylinder coil).
In the beginning I suppose the problem was on big line, but little line was broken off, this line carry
signal to base of power transistor
(http://www.datasheetarchive.com/pdf-dat ... 152462.pdf).
Re: Repairing a Digiplex
Sorry, this is a complete Digiplex pic (by internet)
Transistor are under vacuum device.
transistor location, green line are the original bridge to carry hi current
original bridge
Transistor are under vacuum device.
transistor location, green line are the original bridge to carry hi current
original bridge
-
- paso grand pooh-bah
- Posts: 1527
- Joined: Thu Jun 21, 2007 12:00 am
- model: 907 I.E.
- year: 1991
- Location: Gothenburg, SWEDEN
Re: Repairing a Digiplex
Thx again!
We can probably run our Paso`s forever when guys like you chime in...
Do you work w electronics f a living?
We can probably run our Paso`s forever when guys like you chime in...
Do you work w electronics f a living?
Gert
907 I.E. -91
M900 -97
MTS 1100s -07
907 I.E. -91
M900 -97
MTS 1100s -07
- persempre907
- paso grand pooh-bah
- Posts: 3312
- Joined: Tue Dec 06, 2005 12:00 am
- model: 907 I.E.
- year: 1992
- Location: Roma, Italia
Re: Repairing a Digiplex
So, if it only was a circuit fault, it could be quite easily redone for a perfect recover...
Great job!
Ciao
Great job!
Ciao
Francesco
Ducati 907IE 1992 Rosso
Ducati 907IE 1993 Nero
Moto Guzzi Galletto 1960 Sabbia
BMW R Nine t 2019
Ducati 907IE 1992 Rosso
Ducati 907IE 1993 Nero
Moto Guzzi Galletto 1960 Sabbia
BMW R Nine t 2019