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Post by fuxtor on May 12, 2016 16:24:04 GMT -5
OK, I'm not getting all my relay clicks now?? My volume led is out as well.... I back tracked and voltages are all lower than they were... I'm getting one power button click, than no more.....
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Post by fuxtor on May 12, 2016 16:26:32 GMT -5
I'm getting no dcv at cn34 as well,
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Post by mastertech on May 12, 2016 21:30:48 GMT -5
Did you find the problem or are we starting over?
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Post by fuxtor on May 12, 2016 21:36:38 GMT -5
i guess we start over :{
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Post by fuxtor on May 12, 2016 21:45:43 GMT -5
i still have 8.04 acv across the 2 resistors, but i guess i will have to confirm the other voltages??
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Post by fuxtor on May 12, 2016 21:47:08 GMT -5
any theories why all the relay actions would quit?
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Post by mastertech on May 12, 2016 21:50:22 GMT -5
You can try reset again. If that does not work then start over testing voltages again.
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Post by fuxtor on May 12, 2016 21:51:24 GMT -5
I tried the reset, but i will try once more than i will post voltages from the beginning.....
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Post by mastertech on May 12, 2016 21:52:30 GMT -5
You may have some bad solder joints. This could also be the problem with the front display. You are going to have to also start looking at solder points very closely, especially where connectors and harness point are.
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Post by fuxtor on May 12, 2016 22:00:11 GMT -5
Yes, OK I will have a look and reflow suspected areas.
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Post by fuxtor on May 12, 2016 23:08:50 GMT -5
OK, back to beginning I have
Cn29
Vfdp- ( -12.7 DC)
-5 - ( -4.95 DC )
+5. - ( +4.9 DC )
Cn14 pin1 - ( -3.5 dcv)
Pin4 - ( 0.6 dcv )
Cn13 pin1 - ( 0.1 dcv)
Pin 4 - ( -0.5 dcv)
8.04 acv across r122 - r123.
Cn34 - 1 pin out of 4 registers +4.87 dcv
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Post by mastertech on May 13, 2016 8:47:27 GMT -5
And this is with hearing 1 click when the button is pressed?
Did you try pressing the power button again while testing?
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Post by fuxtor on May 13, 2016 11:10:03 GMT -5
I get the initial click after pushing the power button and the standby light shuts off. During the first round of testing, I was getting 3 clicks. Also the light in the volume quit lighting as well??. If I change speaker from a to B I no longer get a relay click there either...?? I usually don't probe the pin until it's in place than energize... I haven't turned the unit off and on while checking voltages ( yet??)...
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Post by mastertech on May 13, 2016 11:37:31 GMT -5
OK, back to beginning I have Cn29 Vfdp- ( -12.7 DC) -5 - ( -4.95 DC ) +5. - ( +4.9 DC ) Cn14 pin1 - ( -3.5 dcv) Pin4 - ( 0.6 dcv ) Cn13 pin1 - ( 0.1 dcv) Pin 4 - ( -0.5 dcv) 8.04 acv across r122 - r123. Cn34 - 1 pin out of 4 registers +4.87 dcv There are 2 things I see when looking at this. First I see that the main transformer is not being turned on. Second I see that the voltage across the 2 resistors is the same as before even with no power to the main transformer. This has me suspicious. I want you to lift one end of each resistor,R122 and R123 on the side "NOT" toward the transformer and then retest the voltage on the resistors again. |
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Post by fuxtor on May 13, 2016 15:09:59 GMT -5
Wow, I gotta say how lucky we are having someone like you guide us with these type of repairs!! Thank you so much! I will get those voltages in a few hours and post!
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