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Old 20th June 2013, 02:21 PM   #151
srinath is offline srinath  United States
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The junction of c466 and r455 has whatever is the DC output of the trafo T451.
That feeds the collectors of transistors - q456, 455 and diodes d465 and d466 and goes to CP457 which turns on the switched power outlets.
What would the effect be on that if I dont have the rated voltage there ?
Will that prevent those relays from clicking.
I am not exactly sure those relays are good, I've run into a few dead relays in a few amps. In fact just 1 has to be bad, the one that has to click first. I am thinking of a 9v battery test for those done outside the board of course.

Cool.
Srinath.
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Old 20th June 2013, 04:54 PM   #152
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Hi,
You can check the board easily by removing the board from the chassis. Connect 120 volts to the AC connector CP454. Jump pins 1 and 2 to the connector CP456. Apply power and check to make sure you have 12 volts going to the relays. Jump pins 1 and 4 at connector CP458 and the two relays should pickup. Remember you must have 12 volts going to the relays.

Warning Bremen take all the precautions when do the test. You are working with HIGH VOLTAGE.
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Old 20th June 2013, 07:23 PM   #153
srinath is offline srinath  United States
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That I can do easy, but pin 4 is 6v - the schematic and the fact that it has a 7806 in that circuit makes it so - unless the front board doubles it ...

Cool.
Srinath.
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