Re: 42lg3000-za No Picture but got sound
well i check all the ccfl lamps five of them was dead...i take this out and i check again if the tv now open normaly....no it is dont open normaly. only 2 seconts again...someone tell me that if one ccfl is off the inverters close...so i go for shoping new five ccfl... nobody here have ....they make me order and wait one month cost ? verry high....like 20 euro for one.....so i check the china way they give 20 euro for ten ccfl lamps... but i have not time to wait one month or more( i know) and if my order is nt the same i make or some...
majterix
Member
Last Activity: 02-20-2019, 09:22 AM
Joined: 12-04-2016
Location: thessaloniki
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Last edited by majterix; 02-07-2017, 09:29 AM. -
Re: 42lg3000-za No Picture but got sound
i sent the fotos of the tv and the back plate....and the two inverters the old and the two new inverters... where i can sent video? i have test with two ccfl lamps and again my tv work for two seconts.. i have try to test the lamps of the tv but all the lamps together so the dont open because i have not big inverter... it is only for this smal lapms i get it... what other i have to check again???? i dont like but i think is one of the new inverters that have the promplem... what i have to check????...Leave a comment:
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Re: 42lg3000-za No Picture but got sound
i have 24 volt for the inverters...how to check again if the new inverters from china is ok ? i have check all the capasitors all the tranzistors with product name ( nikos) i check the fuse...the ccfl lamps need 1000 volt dc? i have a new tester for led tv...the output volt is 110 and 220 and 240 volt dc...can i use it to check the lamps?Leave a comment:
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Re: 42lg3000-za No Picture but got sound
the white conector...Leave a comment:
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Re: 42lg3000-za No Picture but got sound
,pin 1 is 16 volt
pi2 is 16 volt
pin3 is zero volt
pin 4 zero volt
pin 5 12 volt
pin6 12 volt
pin 7 zero volt
pin 8 zero volt
pin 9 5 volt
pin 10 is 5 volt
pin 11 is 5 volt
pin 12 is 5 volt
pin13 is zero volt
pin 14 is zero volt
pin 15 is zero volt
pin 16 is zero volt
pin 17 is zero volt
pin 18 is 5 volt
pin19 is 2,9 volt
pin 20 is 5 volt
pin 21 is o volt
pin22 is 3,2 volt
pin 23 is zero volt
pin 24 is...Leave a comment:
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Re: 42lg3000-za No Picture but got sound
this foto is beter...Leave a comment:
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Re: 42lg3000-za No Picture but got sound
hello to everybody...i check again and i have new.....i have meter with my voltometer in open tv the conectors from power suply to tv tuner and i have this values..
,,pin 1 is 16 volt
pi2 is 16 volt
pin3 is zero volt
pin 4 zero volt
pin 5 12 volt
pin6 12 volt
pin 7 zero volt
pin 8 zero volt
pin 9 5 volt
pin 10 is 5 volt
pin 11 is 5 volt
pin 12 is 5 volt
pin13 is zero volt
pin 14 is zero volt
pin 15 is zero volt
...Leave a comment:
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Re: 42lg3000-za No Picture but got sound
i have to sleep and tomorow i check the pin 17 and i send you fotos with the new and old invertersLeave a comment:
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Re: 42lg3000-za No Picture but got sound
i have change the inverters with new because i check and they was broke ..to the transistor caled nikosLeave a comment:
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Re: 42lg3000-za No Picture but got sound
i have tried to write you many times but i have internet log off broblemsLeave a comment:
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Re: 42lg3000-za No Picture but got sound
i have 16,3 volt with the two cases.... with one and with two resistors.... but the screen open again for one secont and go black screen again.. and i put all connectors again and i have normal screen for one secont i just see the logo hdmi1 and black screen but i have soundLeave a comment:
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Re: 42lg3000-za No Picture but got sound
i have send you three fotos .please check the fotos to be sure what i send you
red connector is easy
pin 1,2,3,4,5 is 24 volt pin 6,7,8,9,10 is the ground-negative pin 11 is zero volt and pin 12 is 5 volt
now to the white connector
here we have 24 pins from count from down to up
pin 1,2,3,4,5,6,7,8 is 0 volt zero volt
pin 9,10,11,12, and 18 have 5 volt
all the other 0 volt so i dont have 16,3 volt ad 12 volt...Leave a comment:
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Re: 42lg3000-za No Picture but got sound
ok...Leave a comment:
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Re: 42lg3000-za No Picture but got sound
no i have not 16,3 volt and i have not 12 volt i have only five volt. to the white place of the volt who it send volt to the video card. what i have to look to the power suply?Leave a comment:
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Re: 42lg3000-za No Picture but got sound
where is the true way to take the volts? i measure from the red place only the negative to the other . if i pul out the white cable i make measured the red place and take zero volt..if i pull in the white cable i take 24 volt and five volt to the red place. now to take measure only the white place i have only the five volt not the 16 volt...if you wait i can sent a foto...Leave a comment:
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Re: 42lg3000-za No Picture but got sound
hello my friends...i have the same tv 42LG3000 i have the this same problem. first i try to open the tv and i was in three times flash the power led that seems to try to open and then close..i check the volt from power suply and it is ok . for the inverters 24 volt 5 volt and 3,3 volt . next i check one by one the inverters and i find that the one of this doesnt work the half transistor caled nikos .......... i try and put off only the inverters and try to open the tv... now i have only sound. this is good .. for one reason.but i need...Leave a comment:
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