medar58

158

hace 5 años

change brothers the R663 and the R664 the C 658, C650 was solved all the plate and the fault persists the same

medar58

158

hace 5 años

Can I change the IC 653 which is an SE 135 NS to an SE 110 SN? just to test if it turns on normal and the 110s pass the + B ??

kchoman

1.564

hace 5 años

Hello, I change or control the good condition of all the filters that I told you, you cannot replace how you want the IC653 IS OF 135V OUTPUT OF THE + B the one you want to put is 110v, I test if the input and voltage voltages are correct IC653 output? , also check if the fuse resistors, all the voltages marked in red, are well.

medar58

158

hace 5 años

hello friend Kchoman check the following notice the Q611C3311A 50 volts arrive in the ECB and in the ISOLADOR or otocupler IC 652 on pin 3 y4 50 v arrive and on pin 1 and 2 voltages do not arrive and ic 653 + B arrive a voltage of 3.5 volts and the capacitor C663 3.5 well on time with the voltmeter I give the 2 resistors any of them R663 or R664 and the TV turns on

medar58

158

hace 5 años

kchoman friend I change the ISOLADOR or otocupler IC 652 this I have distrust I have to check it to see what happens that those voltages do not arrive in the secondary of the chopper transformer

medar58

158

hace 5 años

good colleagues and I found the fault was the resistance R657 is altered I put 2 resistance of 150 Kohm 1/2 w which gives a total of 300Kohms and ready the TV turns on great greetings everyone thanks for your help

kchoman

1.564

hace 5 años

Hello partner, congratulations for solving the problem and finding the defective component, which alters the tension of one of the internal transistor of IC651, assess if the help was helpful, regards

medar58

158

hace 5 años

thanks colleague was the solution thank you all and for the diagram greetings