Re: Roberts RT7 - problem
A break in the track to R30 would just make the output sound a bit shriller since R30 / C33 just tailor the high frequency response a bit. It does look as though it's just the tinning missing rather than a track break in the picture, though.
It's an interesting output transformer- somewhat reminiscent of a Quad II with its distributed winding layout.
Just a thought- if the volume control were to go open circuit it would seriously upset the driver transistor TR5 bias, though whether the rest of the resistors around that device would let serious current pass I can't tell without values.
Chris
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