Just repaired a tube amp , problem unrelated to this.
But it seemed odd to me to have valves , in inverted
orientation , ie under a pcb with SM resistors on it.

Anyone foresee temperature cycling problems/ dislodged SMD in the future
with such arrangements.


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Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/