210-65 power transformer

matt_sutton

hi All-

Power Transformer on my 210-65 (tube PI) has become "microphonic", for lack of a better word. Emits a low hum, even on standby- you can feel the vibration by touch. I know Mercury Magnetics makes a replacement, but its crazy expensive. Does any one have an angle/part# for one by Hammond or other manufacturer?

thanks,

Matt 

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Music Man Equipment
MM 2-10-65

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12 years 1 month

mm210 Wed, 03/25/2026 - 09:01

Mercury is the only think I have seen lately. I could be wrong though. I don't do any work anymore so I haven't kept up too much. They ARE high though. 

Profile picture for user MidCenturyAudio
Full Name
Micajah Smithson
Music Man Equipment
Music Man112RD-100-EVM, Musicman RD100, Musicman 210HD, Silvertone 1484, Gretsch 2156 Playboy, VOX Royal Guardsman, Harmony H303, Tiesco Melody B-3

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11 years 10 months

MidCenturyAudio Thu, 04/23/2026 - 09:44

I've been talking with Phil and Arlyn at Heyboer Transformers about a replacement power transformer for my 2275 150-HD. Heyboer made the replacement trannies for Mojotone. They still have the wind cards for some of these transformers including the 2165 chassis. Might check with them? 

Full Name
Matt Sutton
Music Man Equipment
Music Man 210-65

Member for

12 years 1 month

matt_sutton Thu, 04/23/2026 - 13:45

Thanks- Will look into these folks, heard nothing but good about Mojotone.

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