Vienna electronic problem

[rebetli]

Hello,
After switch on, power LED lights, short ( 1 sec ) motor noise, red LED is blinking.
In test mode all function seems OK.
Can anybudy help please?
Regards,
Rebetli

 

[ksb]

Hello Rebetli,

please measure the voltage at the 4-pole motor-connector "yellow-yellow-red-blue" between the red and blue wire while moving the motor in the test-mode.

If the voltage is below 30-33V replace the transistor BD245C at the heat-sink and the diode 33V 1,3W in front of the transistor.

Be sure that the brewing-unit is easy to move by hand.

Regards KSB

 

[rebetli]

Hello,
Before your answare I try to examine the board, and sold out C20 and solt in.( the same kondensator ).
So I do nothing with it.
When I put it back to the machine, swith it on ( to measure the voltages ) and it WORKS !
I dont know what happend? ( before I tried it a lot )
Do you know, what happends if there is problem in the temp. sensor circuit?
Is it possible if it is an extreme voltage , processor tilts, and red LED flashes?
Regards,
Rebetli

Hello Rebetli,

please measure the voltage at the 4-pole motor-connector "yellow-yellow-red-blue" between the red and blue wire while moving the motor in the test-mode.

If the voltage is below 30-33V replace the transistor BD245C at the heat-sink and the diode 33V 1,3W in front of the transistor.

Be sure that the brewing-unit is easy to move by hand.

Regards KSB

 

[hmilbradt]

Do you know, what happends if there is problem in the temp. sensor circuit?

Hi,

On most CPU boards the program runs into a hold loop and the machine freezes.

regards
Harry