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Post by mastertech on Aug 30, 2013 18:54:32 GMT -5
Or did you mean the wall outlet had 122v?
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Post by Michael on Aug 30, 2013 18:57:21 GMT -5
Checked the fuse, it's fine. Changed it with another one to be sure. I get the same values.
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Post by mastertech on Aug 30, 2013 18:59:35 GMT -5
Do you still have the jumper on relay RY301?
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Post by Michael on Aug 30, 2013 19:00:09 GMT -5
122 V on CB 304 pins and the wall outlet. No voltage on the two outlets on the back of the unit.
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Post by Michael on Aug 30, 2013 19:02:37 GMT -5
Jumper was disconnected on one leg accidentally . Reconnected it. I get 122 V on the pins of transformer but no display.
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Post by mastertech on Aug 30, 2013 19:04:39 GMT -5
Sooooooo, now we know why our lamp test was not working properly. Pop that fuse and retest with the lamp before we go any further.
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Post by Michael on Aug 30, 2013 19:08:38 GMT -5
Lamp is dimmed with or without the blue and red connected.
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Post by Michael on Aug 30, 2013 19:10:37 GMT -5
A little less dimmed with the two wires disconnected!
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Post by Michael on Aug 30, 2013 19:12:53 GMT -5
And stays dimmed even after I unplug the unit!
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Post by Michal on Aug 30, 2013 19:14:47 GMT -5
Disregard the last post. Wrong wire!! Sorry...
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Post by mastertech on Aug 30, 2013 19:14:53 GMT -5
Ok. Good, that's what we want. Remove lamp and put fuse back in. The board under the board with the fuse on it. Does yours look like this with all the empty spaces at the lower edge like this one?  |
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Post by Michael on Aug 30, 2013 19:17:33 GMT -5
Yes! Exactly!!
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Post by mastertech on Aug 30, 2013 19:21:25 GMT -5
Ok, you need to test the 4 diodes at the bottom right near that screw. You should be able to test them without removing the board for now. But I suspect you are going to find 1 or more shorted. Make sure you get a reading 1 way and not the other. DMM on diode. Receiver not plugged in, remember.  |
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Post by Michael on Aug 30, 2013 19:29:05 GMT -5
I have to remove the board!! There is a coating on the wires that prevents me from getting contact!!
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Post by Michael on Aug 30, 2013 19:32:15 GMT -5
I get one way reading on all of them!
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