Sir John . . . .
W.e.l.l.l.l.l.l. . . . .I am remembering that giant shaft portions diameter and the base of the attached platter being made of pot metal and being subjective of paint loss in areas with use.
Additionally, the equipment is so old that it should be having common sized blades on the AC plug. Don't know what you are trying to play it through, but hope that its AC plug is using the same.
All leading in to . . .my thought is that you have an AC ground loop . . . so touch the unit and get the buzz/ hum, then reverse the
AC plug of the RCA player 180 degrees at the wall plug. Touch and see if the hum is gone , if not, and the other equipments AC
plug is not polarized . .and can be reversed also, reverse it 180 also and do the touch test. If this did not avert the disimilar ground issues, check within the 45EY2 to see if there is a loose or missing ground wire under its chassis.
73's de Edd
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:Sir John . . . .
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:W.e.l.l.l.l.l.l. . . . .I am remembering that giant shaft portions diameter and the base of the attached platter being made of pot metal and being subjective of paint loss in areas with use.
:Additionally, the equipment is so old that it should be having common sized blades on the AC plug. Don't know what you are trying to play it through, but hope that its AC plug is using the same.
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:All leading in to . . .my thought is that you have an AC ground loop . . . so touch the unit and get the buzz/ hum, then reverse the
:AC plug of the RCA player 180 degrees at the wall plug. Touch and see if the hum is gone , if not, and the other equipments AC
:plug is not polarized . .and can be reversed also, reverse it 180 also and do the touch test. If this did not avert the disimilar ground issues, check within the 45EY2 to see if there is a loose or missing ground wire under its chassis.
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:73's de Edd
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Sir John. . . .
OK . . . .(blush) . . . (red ears) . . . was assuming that unit to be a stand alone mechanical player unit . . .no amp.
On the older units the area of interest was metal, on newer units all of that platter / center spindle assembly was molded
bakelite or plastic even later on.
After confirmation of Sir Warrenns query, does there seem to be a bared portion of the whole
upper base that could be touched also. OR is the top all plastic.
Or if you grasp around the top of the front of the tone arm. . . is there an equal hum pick up.
All in all, it still sounds like a grounding problem.
The muting switch is associated with disrupting the cartridge output when the tone arm is
transiting out of the primary grooved / playing area of the record.
Grease, linters, dust bunnies have a way of working into those contacts.
73's de Edd
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