cristian78

1.946

hace 6 años

hello I would change the tuning filters equally
But the question is burns instantly?
possible causes bad excitation of the horizontal deriver, tube with high voltage losses internally,
Trh of poor quality.

felipe antonio

2.308

hace 6 años

suggestions.- 1.- check that the transistor is original and of quality.- 2.- you need a vpp probe, a 15 / 80vcd source, and an external oscillator. this so as not to depend on the original source, nor use the jungle oscillation. You can check the flyback, measuring the vpp of the hot and the entire horizontal section. Comment if you have experience, equipment, diagram etc. I send you a probe diagram. The original is in electronic community, but with these values it has given us results. P.S. The probe is not the solution, just a contribution for your measurements. greetings.felipe ascencio

frank zapata

12

hace 6 años

Hi friend I do not have much experience in these complex ttan failures and with respect to the transistor if I have an original good quality post but I still burn it instantly

Carlos Quiroga

1.400

hace 6 años

Hello, you checked the status of the D401_402 diodes and the yoke itself, because there are very few paths to burn instantly.

felipe antonio

2.308

hace 6 años

comments. If you assemble the probe, it is placed in the hot collector, you unlink the original power supply and in the b + you place a 75w bulb, the flyback b + pin places an external 15vcd source, you connect everything and check how much the probe measures . at 15vcd the probe should dial you about 136vpp. If you like, comment on what part you do not understand and we will help you and unify a criterion. Regards.

frank zapata

12

hace 6 años

and how is the probe used and how is that of the external oscillator?

felipe antonio

2.308

hace 6 años

We go in parts. The probe measures the vpp (peak to peak voltage). - I explain. if you multiply the vca by 1.41 it is the vcd that you must have in the input filter. Example: 120VAC by 1.41 are 169VCD. Now if you measure the vca by 1.41 the result by two is equal to the vpp of your alternate voltage. example 120 by 1.41 for two equal 338vpp.- is what your probe should mark. This is the voltage you have in the 120VAC socket. - The probe is an essential part of your measuring equipment. When you do not have an oscilloscope, the probe is used.