Question about LG RU-60SZ30 60" Rear Projection HDTV-Ready Television

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Ballast replacement bought a new lamp for this tv, connector plug did not match the ballast. but found ballast was bad anyway. bought replacement ballest, lamp plug now matches ballast plug, but the old ballast had a three pin connector form the power supply board, the new ballast has four pins. and the part numbers are the same from lg. the actual numbers on the ballast are, old ballast EUC 100 C/00, new ballast EUC 100 P/11. the old ballast has two opto-isolators going to the plug, one in one out, the new ballast has three opto-isolators, one out and two in. got a schematic for the set but does not show the ballast at all, it does show the connector going to the ballast, but its only the three wire one. how do i fit the new ballast in place of the old one? lg was no help at all, they don't even know there was a difference with the lamp plug or the ballast control plug. my dea would be to just tie the two inputs together, but i wonder if this has something to do with start up control. it could cause the lamp to just pop on with out a pre-heat, which would probably kill it. any type of schematic or even a block diagram of this ballast would be a help. thanks dave.

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Your set uses the Phillips UPH100W 1.3 100http://servicemanuals.vstore.ca/ 1amp bulb part number 6912V00006A which uses Ballast EUC 6913V0002A and the actual ballast isMB03CA part number 6871VSMB13F I would contact LG and give them these numbers. Is your ballast bad or is the BallastEUC bad? Let me know if I can help you further.

Posted on May 12, 2008

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