TV lg mod. 29fu1rs turn on and only 80vol arrive. al + b
Colleague nicomena thanks for your attention.
I tell you that the capacitors have already changed except the c808 you tell me. I put it into practice and replace it as you indicated. But everything remained the same.
Regarding the ignition order, I tell you that it responds to your ignition order. When it is in stand by the + b it is 135v and when giving an order of ignition it drops to 80v and oblates.
About what. value is the R q, did you replace the R831 ..? ... the voltage in the primary in C837 of 330mfx400v is maintained or low also when giving power ... check the C840 of 22mfx50v in the primary of the source. ... reviews welds on the FB833 ... the source does not regulate in ls 126v when giving power ...
I put the R831 on 22k but the one I had was 30k, and the line tenure is maintained by giving power.
The C840 replace it and check the FB833 coil while it is ok. But I told you to disconnect the ignition pin from the micro and solpresa + + b voltage rose correctly to 110v. But the horizontal transistor warmed me up by putting it short. I will mount another one and I will continue commenting on the progress.
Colleagues, I commented that I discounted the power pin to the mic and the voltage of + b and the oscillation is perfect. I am working with the chassis disconnected from the screen and the yoke.
And the trans overheats me. Horizontal to the Ponto to damage it. Check all horizontal stage capacitors and diodes. The voltage of + b is at 125. And comb the FLAYBACK. And it continues to fail.
do not turn on the board without the yoke and screen connected ... you could short the trans, salt-hor- or damage the fli-bak ... you must work with everything connected ... check the yoke and see if not It is damaged or you are short-lived .... Try another yoke ... I suggest that you connect a 200w filament lamp between the TV and the electrical network ... this serves as protection for you, do not burn more transistors. .. check components in the hor stage, and see if there are any damaged or leaking capacitors ... ok ..
