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Panasonic plasma 50PX77U only 120V?

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    Panasonic plasma 50PX77U only 120V?

    Hello,i have this TV working,fixed it by replacing SS board,in my region AC standard is 220V 60Hz,the service manual and sticker on the TV back cover says 120V AC,in order to use it i need a 220>127V transformer,but analysing the P-board it doesn't seem to really be only 120V.
    Power supply part number is ETXMM655MEH,which is the same as a panasonic plasma manufactured and sold here in Brazil(50PV70LB),that supports full range(110-220VAC).
    The EMC-filter,fuses and relays on P-BOARD are 250V,all the electrolytic caps on primary are 450V,transformers are the same part-number as the 50PV70LB.
    Is there some adaption i can do or any way i can confirm the TV to work in 220V?
    Service manual: https://elektrotanya.com/panasonic_t.../download.html
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    #2
    Re: Panasonic plasma 50PX77U only 120V?

    Since no one bothered to answer,i just plugged it in 220V,it works fine,no need to waste money on a transformer anymore.

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      #3
      Re: Panasonic plasma 50PX77U only 120V?

      With the TV plugged in the 220Vac. See if the dc supplies are what is expected.

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        #4
        Re: Panasonic plasma 50PX77U only 120V?

        I'm pretty sure they would be on par as applying to 22 0 to a 120v circuit would immediately blow the bridge rectifier and open the varistor. Then if jt passed the bridge rectifier without blowing upon plugging in and you would have a lightning show at coils and various IGBTs And you would see some capacitors open right up.
        Last edited by freakaftr8; 03-13-2018, 01:00 PM.
        Did I leave the soldering iron on?

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