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Does AC cyclage difference affect CED player performance?

 
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FMcidrin



Joined: 27 Aug 2010
Posts: 3
Location: Santiago de Chile

PostPosted: Wed Sep 15, 2010 7:48 pm    Post subject: Does AC cyclage difference affect CED player performance? Reply with quote

Hello, congrats for your very useful forum!!

I'm an AV enthusiast, in fact I'm trying to establish a home studio aimed to support, convert, duplicate and back-up most past and present AV and data formats in Chile.

I've recently bought on eBay a Sears model 27454740150 (resembles the RCA SFT100) CED player plus some CED discs. All look in pristine cosmetic condition. It is tuned for 120 VAC 60 Hz only. Once plugged in an AC 220/110V transformer (here in Chile we use 220 VAC and 50 Hz mains) it lights up and loads/unloads flawlessly, but it delivers a blurry B/W picture with some vertical coloured bands (RGB) with no sound at all. Here in Chile we use NTSC as it is there in USA, so color signal standard is OK. Supplied CED discs are NTSC as well.

Seller told me that it could be a worn out stylus (At CEDatum I could find a 149000 series replacement cartridge), but we were wondering if cyclage differences could eventually affect CED players performance?

Best regards from Chile! .-
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cedmagic
Site Admin


Joined: 11 May 2004
Posts: 305
Location: Portland, Oregon

PostPosted: Mon Sep 20, 2010 1:38 am    Post subject: RE: Proper Frequency for NTSC CED Players Reply with quote

Hello:

F/G players like you Sears model derive their turntable RPM timing from the 60 Hz AC frequency - the design parameter was 60.0 Hz +/- 0.5 Hz. The chrominance signal is more susceptible to frequency variations than luminance, which is why you are getting B&W with no color.

There are two ways for you to properly view your NTSC discs. One is to get a J/K player. These can operate on either 50 Hz or 60 Hz AC and could be used in Chile with your 220-to-110 V stepdown transformer. The second option is to get a power inverter with a 120 V, 60 Hz sine wave output and use it to power the Sears player. There is a page at CED Magic detailing the use of PAL players in North America, and most of the information on that page (except the spec of the inverter) can be applied to your situation:

http://cedmagic.com/misc/ntsc-pal/ntsc-pal.html

--Tom Howe
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FMcidrin



Joined: 27 Aug 2010
Posts: 3
Location: Santiago de Chile

PostPosted: Thu Oct 14, 2010 1:45 pm    Post subject: Reply with quote

Hello Tom, thanks for your kind reply!

I'll get a 12Vdc -to -120Vac/60Hz power inverter and try how it goes.
Anyway, I'll try to get a stereo 50/60 Hz one.

Best regards from Chile! .-
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Beetlescott



Joined: 03 Oct 2010
Posts: 2099

PostPosted: Tue Nov 09, 2010 8:01 am    Post subject: Reply with quote

Hey, let us know how it worked for you!!!!!! Good Luck!!!!
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