q.1. tv/vcr/video sender- any ideas?

[flaming]

My usual set up is: Sony DVD/VCR playing into a Panasonic TV. A Thomson video sender is attached to the VCR and drives a slave Sony TV in another room (only on aerial point in my flat). Recently the Sony VCR started being unreliable in the counter/tape transport department. The other day it had seized altogether, showing a shaky 'on' in the front window. I couldn't alter it at all. Turning off then on at the mains did not operate it at all. I have taken it for repair. About the time it was starting to go wrong, the slave TV developed bad reception and I thought it was a) the communal roof satellite aerial having been altered (the worst interference was on my 3rd floor, under the roof, the main TV being on the 2nd; horizontal microwave bands were travelling very noisily vertically down the screen), or the video sender going on the blink. I did various tests and decided it was the Sony VCR which I have put in for repair. I do not subscribe to the communal satellite aerial so can't really ring up the firm concerned. I haven't got a set-top box as this is a non-box reception area. I am now wondering if my problems will be over when the VCR is repaired. Any ideas about what that heavy interference was, please?