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tv phillips model 21pt9469 / 55 chassis SK4.1LCA screen without voltag

romulo caraballo2017
hace 5 años
hace 5 años
good colleagues here I bring you the fault of this phillips tv that arrived without voltage on the scren dark screen, turn on with audio and all the secondary vltages well only the scren voltage is missing at zero V it desoldo from the soquer plate and the same no there is voltate neither low nor zero volt and nothing more was achieved by the moment. Coming to the conclusion that the FLYBACK is damaged which has the original BSC 25335584 which is the problem is sought but is not achieved and the replacement that I have at hand is the BSC293807B but this one carries internal condenser and the original does not, Now I ask you, is it compatible because I already installed the TV on but with the blank screen and the two pins of the capacitor jump spark and the scren does not regulate it is in 900volt if the low or up is the same, and the pins of the capacitor qm left over It can be done, it will be cut, there will be no problem, or it will be that this flay will also be damaged and since the 900volt scren does not come down I ask for your valuable help and collaboration.
franciscovallarta
hace 5 años
hace 5 años
if it is only the screen you can make a simple circuit for the screen voltage from the tsh collector or the red cable of the yoke that also connects to the tsh, it is simple and easy to assemble, with the variable resistance the voltage of the screen
romulo caraballo2017
hace 5 años

Ok if I had that thought but as I have the other flay I wanted to know if it is compatible or not and what would be done with the condenser and that scren does not go down 900vlt but do not open another option to mount the original again and make that circuit

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RhonnyUAM
RhonnyUAM
1.284
hace 5 años
hace 5 años
Friend Romulo! The flyback you have is not compatible pin to pin. I mean they are not in the same order. My advice is that you identify each pin on the plate of the damaged one, and with a marker write it on the plate eg: abl, + b, collector, heater, etc. Thus, with another flaback also identified pin by pin you can replace it by making the graft to cables or cutting tracks. here a video Any questions here we are.
romulo caraballo2017
hace 5 años

ah ok well as I saw here in other posts that this is the replacement x the original and it also appears that they are the same pins and positions supposedly the replacement x that asked why I am not sure since I mount it and the TV starts but with scren high and does not regulate, right now I am with another team apart x for a while to fall again I inform them how I have gone and done.

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romulo caraballo2017
hace 5 años

good, colleagues to this tv the solution was to mount your original flyback since this lack of sceen was the suggestion of fransiscovallarta with the diagram qm step of adapting said missing voltaj from the hot taking it to a volt of 340v thus keeping the tv working perfectly and does not overheat the hot, thank you all for your valuable contributions, greetings.

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