[Jukebox-list] Define hum?

[Britt Abbott]

Hello David, I have a Rockola 1428 that has a background hum after a selection is made, ie turntable, amp are energized. I too have checked the amp filter caps, changed tubes, to no avail. There's two other areas to check grounding of the phono core cable and also audio output transformer. I havn't done either quite yet...
Britt

>From: David Guarino <david_guarino at md.metrocast.net>
>Date: 2008/04/01 Tue PM 01:04:07 CDT
>To: Jukebox mailing list <jukebox-list at lists.netlojix.com>
>Subject: Re: [Jukebox-list] Define hum?

>I think this might be. I have seemed to eliminate lighting and solenoids.
>I'm going to have to look further at transformer idea once I get my house
>sold in Amarillo and get every thing moved here.
>In the mean time I have seemed to pick up another Wurlitzer (2810) (no hum
>lol!!)
>Thanks to everyone for your ideas! I'll post my findings on the 2900 when
>I'm able to get back to it.
>
>
>David G
>
>
>----- Original Message ----- 
>From: "Sue and Dennis Lavin" <lavin at cheqnet.net>
>To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
>Sent: Monday, March 31, 2008 12:22 PM
>Subject: Re: [Jukebox-list] Define hum?
>
>
>> Sounds like youo may have a power transformer humming ,  Or possibly a
>lamp
>> ballast, the laminations may be comming loose inside..
>>
>> Just a guess, but I have had noisey transformers before in  old equipment.
>>
>> Dennis  (jukeboxdenny)
>>
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