Rear Projector Ballast Testing

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  • uberplasma
    Senior Member
    • Oct 2011
    • 85
    • Canada
    #1

    Rear Projector Ballast Testing

    Hi everyone

    I have an Hitachi 55VG825 55`rear projector that blew a bulb, it was the OEM bulb from 2005, so it was not that unexpected that it would go, got 3200 hours of it so not too shabby. I ordered a replacement bulb and installed it and within 30 seconds it blew, and since I had the rear cover off I noticed that the gas discharge tube was lighting up every few seconds. Ballast`s are somewhat out of my normal line of repairs and was wondering if there anyone knew how to troubleshoot the power without a scope or high voltage adapter for my meter.

    Tv is in great shape, from father in law so I know that there was no previous service performed and the Tv was well looked after , he got rid of it only because of the bulb blowing.

    Here are some pics, dust has all been blown out, very clean, no visible damage to any component or any odd smells from the boards.

    Any help or direction would be greatly appreciated.
    Cheers
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