Suggestions.- 1.- you remove the flyback and the hot, you place a charge of the b + to ground (a focus of 75w) .- with this you will check the source .-- 2.- connect your frequency meter at the base of the hot, you give on and check the frequency 15750 cycles. with this you will have the certainty of the operation of the source, if the jungle oscillates and if it reaches the base of the hot. comment. regards.
You have to put model and chassis number to see the circuit and give any suggestions ... greetings!
I have no focus of 75w only a multimeter fluke and the voltage b + does not fall with the fly what falls is the oscillation the source works ok but I do not know if it is a problem of any power of the micro la8680 or the tmp47c43n I have no plane of anything and what I could check was that the metal quartz of the la8680 has 0.7v and that must be to that integrated circuit only 8v arrive from the source
Check the frequency.- and to send the photo: mark the "landscape". you select file .--- mark the photo and give it open .--- send to server ---- accept --- send. and voila. !! .- The reason why the oscillation "falls", is due to failure of the horizonal output, flyback, vertical ci, "dry" or devalued filters. - It is important that you check the frequency and take to test The flyback regards.