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record plays at 78 but not 45 - Printable Version

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record plays at 78 but not 45 - zeb.williamson - 09-03-2019

Hello,

Just found a cool old 50-1721 in a basement.  I'd love to use it.  It gets a hum at high volume.  It turns but no sound unless its set at high rpm so you hear chipmunks but no sound at the correct speed.  Any ideas?

z

RE: record plays at 78 but not 45 - Radioroslyn - 09-04-2019

Hi Zeb and welcome to the Phorum,
Several thing come to mind. Would service the chassis by testing tubes and resistors replace foil/paper caps along w/ eletrolyics. This will give you a good starting point to do any further troubleshooting.
The turntable give it a mechanical cleaning and lub. Not uncommon to find deteriorating rubber parts (driving the platen) that will need replacement. Another common issue is a weak cartridge (low output) and low tracking pressure.
After 69yrs these sets aren't a plug and play unit any more.

RE: record plays at 78 but not 45 - zeb.williamson - 09-07-2019

Thank you very much... so far that is all a mystery to me so I'll start looking into how to do all that.  I'd love to get it working again.

RE: record plays at 78 but not 45 - Jake Blake - 09-08-2019

Whatchu got against chipmunks?!   Icon_lol

RE: record plays at 78 but not 45 - zeb.williamson - 09-08-2019

Nothing really I just don't chipmunks in my vintage pre-chipmunk turntable

RE: record plays at 78 but not 45 - Jake Blake - 09-08-2019

Icon_lol    HA!   ok bud.
Terry is good , smart help.  There's lots of good help here.

RE: record plays at 78 but not 45 - Radioroslyn - 09-08-2019

Nah just don't have a life.[Image: https://philcoradio.com/phorum/images/smilies/icon_lol.gif]