TV SEMP heats the tsh too much
The tsh, it was the d2499, they had already changed it and placed a huge heatsink, I think it would be for the same reason now, the heat that it generates.
According to the diagram of the U16 chassis that would be the one that carries this device that it mentions, and according to my experience the TSH that it carries is another very different class BU808DFI that is a DARLINGTON horizontal transistor. I believe that the temperature taken by a simple 2SD2499 (In comparison) is because it simply is not up to the BU808DFI, unfortunately they are scarce, and those that are many times are counterfeit
partner. 1.- Comment how much you have of b +, (do the focus test) .2.- Check if you have horizontal oscillation (15750) in the horizontal output transistor bse (hot) .- .- 3.- the point appears because when removing the yoke, it has no deflection. (you should not remove it). .- comments. Regards. Felipe ascencio
1.- comment how much you have of b +: 110 volts
(do the focus test) I did it, I always protect like this
.2.- check if you have horizontal oscillation (15750) in the horizontal output transistor bse (hot) The TV turns on, but the screen does not light up
.- .- 3.- the point appears because when removing the yoke, it has no deflection. (you should not remove it) Indeed friend, remove it to see if even the screen, the point appeared.
The screen does not increase with the yoke connected and it is there where the tsh heats up too much
Mr. Alcides. I will now send you a vpp probe, (voltje probe from peak to peak). This is placed in 1.- the heater pin (filament) which is the reference. this voltage is 23vpp.- 2.- in the pin of the 160/180 vcd that goes to the cathodes. check the filters with an esr meter. and comment that you have voltjes in the collectors. With this probe we can check the flyback in the circuit. PRECAUTIONS.-Never connect the probe, or the multimeter in the hot collector, to the voltje of the original source. Regards.
Friend then I comment results, I have been trying to revive the multimeter that is crazy for a while, it will be tomorrow that I will continue with the revicion, thanks for the help, greetings
partner. They are 3 polyester capacitors of 0.1 / 400 / 600vcd and two diodes 1n4007 .- with this probe you can place it in the hot collector and measure the flyback placed in the circuit, ATTENTION. the voltage applied to the b + pin of the flyack should not be greater than 50vcd. ). Meanwhile, so that you get familiar, you can place it in the driver's collector, and in the base of the hot, in the heater pin, vertical feed pin.- Comment when you have it. greetings everyone. Felipe ascended.
Good afternoon friends, I hope to apologize for the delay of my answers, the horizontal reels, separately measure 4.7 ohm each one that, when joined together, gives half of this measurement so I doubt that it is the yoke but I will still look for some to prove, I have not yet Performed the test that fellow Felipe Antonio told me, I hope I can tomorrow.
Generally, LG carry a hot tt4093 or c6093, I don't remember well. But that 2499 doesn't carry a damper. That can be a problem. Try a D2586 or its equivalent D1880.
Friends I want to thank you for your valuable contributions and especially to friend neg2013, you were right, it was the transistor and instead, put the D5024 use damper and TV is working perfectly, also change the C419 50v / 47uf damper just hot, despite have a good time running, thanks again.
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