Author Topic: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit  (Read 1566 times)

progrocktv

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Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« on: February 22, 2016, 12:36:56 PM »
Hi All,
I just purchased a 1966 Packard Bell 98C9 Stereo-TV combo unit from craigslist. The unit was working fine when I picked it up, however after moving it now when I turn it on I get an EXTREMELY loud hum (loud as in the volume is maxed out) I tried everything (including obviously adjusting the volume), switching the inputs, jiggled wires, etc. but no luck. Any ideas what might be the issue?

Harbourmaster

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Re: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« Reply #1 on: February 22, 2016, 05:23:19 PM »
Try flipping the power plug over.
-- Aloha, Ken

No Console Left Behind!

progrocktv

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Re: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« Reply #2 on: February 22, 2016, 06:58:33 PM »
Try flipping the power plug over.

Still humming  :(

Larry H

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Re: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« Reply #3 on: February 22, 2016, 09:43:52 PM »
Loose tonearm wiring at cartridge?
--Larry

progrocktv

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Re: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« Reply #4 on: February 22, 2016, 09:55:56 PM »
Loose tonearm wiring at cartridge?

Would that also affect if the input selector was on FM/AM or AUX?

Thanks,
Phil

TC Chris

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Re: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« Reply #5 on: February 22, 2016, 10:26:36 PM »
Dead filter capacitor.  Transient power spikes when you turn it on can do that.  Or just bad luck.  Check out other potential physical causes--loose stuff--first, but then get out the soldering iron.

Chris Campbell

progrocktv

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Re: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« Reply #6 on: February 23, 2016, 10:06:02 AM »
Dead filter capacitor.  Transient power spikes when you turn it on can do that.  Or just bad luck.  Check out other potential physical causes--loose stuff--first, but then get out the soldering iron.

Chris Campbell

Thanks. Had a feeling it was some sort of capping issue. Time to brush up on my soldering skills  :P

Larry H

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Re: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« Reply #7 on: February 23, 2016, 10:43:14 AM »
Loose tonearm wiring at cartridge?

Would that also affect if the input selector was on FM/AM or AUX?

Thanks,
Phil
No, I think that would cause hum only if you're in the Phono mode.  If it's humming at all modes, definitely a bad filter capacitor.
--Larry

Steve

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Re: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« Reply #8 on: March 29, 2016, 08:22:55 PM »
Did you ever get this fixed?

progrocktv

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Re: Very Loud hum on a 1966 Packard Bell 98C9 TV/Stereo Combo Unit
« Reply #9 on: March 30, 2016, 01:28:53 PM »
Did you ever get this fixed?

Not yet, a friend of mine with experience in capping is going to help me re-cap until the problem is fixed. I mentioned the hum and immediately he said he's sure it's the filter cap as those are usually the first to go. I'll keep you all posted :-)