Hi Group, still looking for help with an NEC TV with no frame drive. I have replaced all of the electro's in the vert. stage & also the vert. driver IC ( LA7838). I have supply on pin 1 of 12Vdc, Pin 8 28Vdc & Pin 13 27 Vdc. Measuring between Pin 12 (output) & Pin 11 (Gnd) in circuit is a couple of K. On Pin 12 I have 16.66 Vdc. (no sawtooth) I have a copy of the cicuit for the vertical output stage & also the page with the jungle IC on it. Any info greatly appreciated, Ian S.
- posted
17 years ago