Quote:
Originally Posted by compucat
The control door is open. I wonder if the latch is broken or it was deliberately opened for frequent hold adjustment.
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The picture was taken around the time that the caps in the horizontal and vertical hold circuits, needed replacing. The set itself had well designed circuitry but the caps they used were rather poor quality. Until the caps were replaced, the controls needed readjustment, as the set warmed up.
The set shown is a KCS97, 1955,56 model and did use a 21AMP4.
The lighter colored set shown in the other picture was the KCS103, a year later, still used the 21AMP4 and the square cornered pencil box cover.
The cover used springs to hold it either open or closed.