I have a Binatone portable B/W TV which I had just got to work as a simple oscilloscope now the picture height has collapsed to about 2 inches in the middle of the screen and there is a crashing hissing ( out of tune) noise
I have put all the deflector leads back to original but still the same and no response from the tuner
PLEASE HELPI was having fun putting square wave and music signals in ... and my grandkids haven't seen it yet ... they look forward to seeing what crazy" inventions" I have done
Answer:
my guess the tube is about to go.
It sounds like the the tube inside that lights up the screen has worn out.did you have it insured.
Black and white TVs are dirt cheap ! my advice would be
bin the old and buy a new ! and start again !
Cheers Pete
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