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Equipment Repairs => PLASMA TV forum => Topic started by: keeton on June 25, 2011,11:01:51

Title: lg 42px3rva no picture
Post by: keeton on June 25, 2011,11:01:51

hi im working on lg plasma iv change all 3 boards in the repair kit and still no picture im new to all this so any idears would be helpfull thanks katy

Title: Re: lg 42px3rva no picture
Post by: watteau on June 25, 2011,11:42:57

Hi,
Are the symptoms the same as before changing the kit, and you find any
components on the old SUS boards faulty?
Are all the supplies coming out of the power-supply, present, and correct?
I would check these first.
Regards,
John.

Title: Re: lg 42px3rva no picture
Post by: keeton on June 25, 2011,12:32:51

hi all the same yes power light stays on green but no picture i havent put the new zsus board in yet as it was faulty could it still be the zsus im not sure as the fuses were all ok on the zsus and ysus... iv checked the the va it shows 64v it should be 65v and the vs is 183 it sould be 184 and the 5v is 4v would this make any difrence??? also is it possable for the buffers to be coursing this problem thanks katy

Title: Re: lg 42px3rva no picture
Post by: daz on June 25, 2011,14:14:21

hi katy
the control pcbs are not all compatable with all sets on the ver 7 kit, try puting the old ctrl pcb back in.
good luck
daz

Title: Re: lg 42px3rva no picture
Post by: keeton on June 26, 2011,07:56:54

oh i see ill give that a try thanks so much for your help daz