Re: vizio tv e420vo No audio
i am getting no reading on 7
i am getting no reading on 7
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Re: vizio tv e420vo No audio
Other readings?
Measuring using a scope, of course? You are tracing audio, not DC voltage.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: vizio tv e420vo No audio
there is no voltage on 8 or out put on 7Comment
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Re: vizio tv e420vo No audio
Just to be sure what settings are your scope set to.
Lack of voltage on pin 8 is not good, as that should be the opamp power supply.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio tv e420vo No audio
I use the multimiter on vdcComment
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Re: vizio tv e420vo No audio
But you said you had a scope?? I am lost. You must measure those pins again with scope to determine if there is a signal or not.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio tv e420vo No audio
i am trying to make sure that the scope is working.Comment
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Re: vizio tv e420vo No audio
Use the probe comp or probe cal output to test the scope. Hook probe to it and look for square waveform.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio tv e420vo No audio
ok, i am getting voltage with the scope, i just dont know how much.Comment
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Re: vizio tv e420vo No audio
Please watch this video to understand how to use an oscilloscope.
It applies for analog and digital scopes.
https://www.youtube.com/watch?v=hUIgAu3QQWQLast edited by tom66; 01-19-2013, 04:48 PM.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio tv e420vo No audio
i got voltage on pin 8Comment
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Re: vizio tv e420vo No audio
How many volts?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio tv e420vo No audio
.8vComment
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Re: vizio tv e420vo No audio
4.6v on 7 pinComment
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Re: vizio tv e420vo No audio
.8V is not enough, double check that is good.
Then you need to repeat all previous readings with scope, looking for the audio signal on 100mV/div at 10ms/div, of course TV should be playing signal.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio tv e420vo No audio
i set the square to 5v and went i tested it it go 2 1/2 square wish is 12v if i'm not mistaking. Like i said i has never used it until nowComment
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Re: vizio tv e420vo No audio
Can I see a picture?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: vizio tv e420vo No audio
Attached FilesComment
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Re: vizio tv e420vo No audio
Connect probe to PROBE ADJUST.
Volts DC to 0.1V/div
Time to 1ms/div
Select CH1 only
Show me what you see.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio tv e420vo No audio
Attached FilesComment
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