EKCO T2317

< Back

At switch -on the set behaves quite normally, the sound signal starts to build up and then as the line timebase comes into operation the sound
vanishes and an only partially controllable raster
appears. As this happens, the video anode voltage drops by some 30V. After this, the picture and
sound appear very briefly from time to time. -L.
Newman (Oxford). This symptom could be caused by instability in
the vision stages. The oscillatory signal so produced would be rectified by the vision detector
and overdrive the video amplifier, causing its
overheating. The vision and possibly the sound
would be affected. Check the i.f. valves, preferably by substitution and, if necessary, the small i.f.
decoupling and bypass capacitors.

Previous EKCO T221
Next EKCO T283
Table of Contents
0 0 vote
Article Rating
Notify of

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Inline Feedbacks
View all comments
Would love your thoughts, please comment.x