Hi.
Well, colleague, I really appreciate your attention. I think the fault appeared. Given my doubts, I blew the source plate as it did not deliver the voltage of 220 to the entrance of the traffic. Not with tapping as I had done but pressing hard there it appeared that it was turning on and off ... Cleaning and Solving everything including the fuse So far it works correctly and now the pulse train arrives correctly at the base of Q140.
If it fails again, I'll bother you again. I think there was the problem, but?
Greetings
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Hi. Pin 24 (prot) has 1.80 volts (it will be protected) activating the Q140 base activates the relay and the voltages appear in the secondary of 12 and 40 volts, the display does not turn on and is cut in 5 seconds.
It should be noted that I was unable to attach the service manual that I have, it does not allow me.
Thank you for your response, what do you think as I follow.
regards
According to the readings the equipment is being protected, what voltage is in the Q508?