1A5/Repairs

Design mistake. The UNCAL lamp is powered by "+100V DCPLD A" which shifts the trace about 0.1 division. It should be powered from the basic +100V rail.

Serial Number B124386

SYMPTOM: Vc has long asymptotic tail

DATE: 20220520
NOTE: Old symptom, just noticed now
CAUSE: Leakage in C114, 1uF 25V NP aluminum electrolytic
ACTION: Replace with 1uF 25V X7R ceramic a la Type W
FIXED

SYMPTOM: Clear V/CM knob skirt is cracked and slipping

DATE: 202205
NOTE: Old symptom, just slowly getting worse
NOTE: Part #74 in mechanical diagram, 366-0418-00
ACTION: Super-glue plastic hub to metal hub
OOPS: Super glue dissolved a mark
ACTION: Redraw with Sharpie