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Post by tibimakai on Dec 1, 2014 21:07:56 GMT -5
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Post by tibimakai on Dec 1, 2014 13:20:48 GMT -5
The pin numbers are not marked on the PCB. I assume, that the white wire, is number 1 right?!
I will double check again, when I get home later on.
Basically, at three pins there is 5.6V, at another three pins is 0V(GND) and the last one is 0V in standby. If I force it on, it will show 4.12V(Mainpower).
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Post by tibimakai on Nov 30, 2014 22:26:16 GMT -5
These are the PCB markings at CX101:
Pin #1, #2, #3 are 5.6V
Pin #4, #5, #6 are GND
Pin #7 Mainpower
You are sure, that I should measure from pin #3?
Neg. to pin #3 and pin #6= -5.63V
Neg. to pin #3 and pin #1= 0V
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Post by tibimakai on Nov 30, 2014 13:36:49 GMT -5
It's hard to see the pin out markings on the PCB(it's way down there) on that connector, but I assume that the white wire is number one.
I have taken the measurementat the other end of the wire harness, on the HDMI board.
Pin #1= -5.59V
#3= +5.573V
#6= -0.002V
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Post by tibimakai on Nov 30, 2014 0:00:16 GMT -5
Thanks for the help, but at the moment, I don't have the receiver in front of me.
Most likely, tomorrow morning I will look at that reading.
I know, that the power supply delivers the 5.6V.
No LEDs on the panel.
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Post by tibimakai on Nov 29, 2014 23:53:49 GMT -5
Some Vizio TVs have bad voltage regulators on the mainboard. Some they have bad BD IC on one of the inverters. Check FET's pin #1 and #3 for 10.5Kohm. If it is different, then IC can be bad, should test FETs also. There are kits on Ebay.
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Post by tibimakai on Nov 26, 2014 12:06:21 GMT -5
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Post by tibimakai on Nov 26, 2014 12:03:52 GMT -5
I can reset it(turn on), by holding the Power on button for 10 seconds. The same way, I can shut it down too.
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Post by tibimakai on Nov 25, 2014 14:14:00 GMT -5
Ones, I have repaired an Onkyo HTR-591 with bad stby relay. The part, it was a Denon relay. I have purchased a new one from pacparts. The relay, it was a sealed type and when I have cut it open, it was all rusted. 2012 model receiver(!).
Have pictures at badcapsforum.
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Post by tibimakai on Nov 25, 2014 13:55:28 GMT -5
My receiver, does the same exact thing, but there is no corrosion on the HDMI board, at least I can't see it. Maybe it was water damaged?
If factory reset it, it will show Power on and it will stay there. Nothing else can be done with the receiver.
The op's situation I had in on a Harman Kardon AVR1700. It would start up, but there is no sound. Everything else, it's working though.
Some traces disintegrated from corrosion. I had to jump it with some wire.
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