have 66 volts off and 176 volts on, for bl on, thanks for any ideas.
sony kdl46s4100, 66 volts at bl on with tv off
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Re: sony kdl46s4100, 66 volts at bl on with tv off
BL_ON is 66 volts off and 176 volts on. Are you sure? Meter's battery is good? What do you use for Ground ref? Any pictures? What is it not doing?
Training manual:Last edited by budm; 09-11-2013, 09:33 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: sony kdl46s4100, 66 volts at bl on with tv off
tested more, bl-dim starts about 18 v and keeps going up. bl on goes wild from.465 to 186 volts, that is with av board disconected and with power off,Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
battery is good get proper readings from other connectors, but looks like at least those 2 on cn303 are not right, thanks.Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
There is nothing on the main board that can generate that much voltage.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
That much voltage would have blown out just about all the ICs on the boards. You are not missing the decimal point on the meter?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
Try reading 1.5V and 9V battery. what you are reporting are impossible.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
this meter is measuring mvs and sometimes v, I have it on dc auto.Comment
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Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
So it is varying when measure the battery too? So it is 66mV = .066V. Better get better meter. When meter battery runs low, the readout will show higher reading than it should be. Can't you put it in 20V range instead of auto range?Last edited by budm; 09-11-2013, 10:02 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
no its gdt-3200 auto range only, no manual settings.Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
Well, we need to get correct reading first. right now those readings are way off base.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
i'll try plugging up the av board to see if it reads better.Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
You should download that training manual. By the way, I still do not know what the TV is not doing.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
ok, will do, this meter is a little strange, some it reads in volts the others in mv, plugged in the av board, with power off, sgnd =0, BL DIM=155MV, BL ON=73MV, DET=2.3MV, power on sgnd=18.7mv, bldim=3.31v, blon=182mv, det=3.27v.Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
tv is not turning all the way on, it gets steady green light, no picture or sound, if unplug cn303 backlights come on with the multi line then solid screen test pattern loop, I think this is protection mode but not sure, thanks for help.Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
followed testing in manual for 301, says replace av board, this board is the third one shop jimmy sent me, and they swore up and down they were all good, I don't know what to think.Comment
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Re: sony kdl46s4100, 66 volts at bl on with tv off
but I did see where other folks were having the same problem and a good av board fixed it.Comment
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