Hi all. Been asked to look at this sony KV25-C1 which seems to have the typical AKB blanking problem due to worn tube (sound ok, pic takes around 10 mins to come on). Will try adjusting the G2, but this article caught my eye:
especially the part:
" 1. Connect a 1K resistor between CN704/pin 1 and pin 3 on the CR board for several seconds. A picture should appear on the screen and remain when the resistor is removed. 2. If the picture remains, the white balance will gradually change to the color of the IK Detect circuit that is defective. 3. If the picture disappears when the resistor is removed, troubleshoot the components between the Y/C Jungle IC301/pin 25 and 4. R770 on the C Board. No IK signals from any of the video out circuits are reaching IC301/pin 25. 5. If a picture does not appear, check the components CN304/pin 1 and Y/C Jungle IC301/pin 25. "
before condemning tHe set, which has a good picture when warm and un- blanked, is it feasible to attempt to apply the above to this sony set and bypass the akb circuit by means of a resistor? I'm at the stage where there's nothing to lose as the set will have to be dumped , so am open to ideas.
-B