After working normally the previous evening, I
switched this receiver on recently to find no sound,
vision, raster or line whistle. The heaters of all
the valves and c.r.t. light, and the fuses are intact.
-B. R. Noble (Langley, Buckinghamshire). This condition is caused by a faulty resistor in
series with the metal rectifier. This can be
checked, normally by bridging the 16R and 20R
resistors in turn, replacing which ever is open