Mulja tv repair portal
Equipment Repairs => PLASMA TV forum => Topic started by: t1412 on July 29, 2013,15:26:50
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evening chaps has anyone come across this problem before, on a lg50pg3000 white screen showing a message v3.8.1 any info would be great thanks for your time
regards
shaun
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every day, its in the burn in mode, to fully remove this problem you need the service remote, pt no.mkj39170828, on earlier chassis it could be got round but i think on this one you need the remote
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much appreciated for the info tony
shaun
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hi tony, just to let you know the was problem was sorted with the service remote thanks again
regards
shaun :brinda:
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pleasure, my years at lg are not wasted totally then,
tony walker
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hi tony need to pick your brain i've got a lg-42lp1d-ea on the bench just clicking there's no dc voltage at the large filter caps, have tested diodes in circuit forward and reverse bias but will take them out to make sure thats where i am at the minute thanks
regards
shaun
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good heavens shaun, thats an old one, the psu circuit isnt in the the manual but this is from memory, dc to the smoothing block is not present until it receives an on from the signal board. I take it the standby light is lit, if it is, marked on the board there will be pwr on from the main board to the psu. Once this feed to the psu is present, if the psu is working it will energise the relay and mains will be applied to the bridge. I suppose you could bridge the relay contacts to determine if the psu works or not, i take it the relay does not energise if the standby button is pressed either on the set or remote. If the relay does not click it is likely to be a signal board problem but we binned all ours years ago. make sure your stb6 is correct and reaching the signals pcb and let me know. I love challenges. see you soon,
tony
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hi tony sorry i haven't got back to you any sooner, the led goes green just clicks about 6 or 7 times i'll do some voltages test get back to you thanks
regards
shaun