Hotpoint P65MEP
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Location: Cameron Park, NSW
Member since 5 November 2010
Member #: 770
Postcount: 409
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I am working on this radio and noted an earlier post where circuit info is apparently non existent. Fortunately, it is a fairly standard valve complement, 6BE6, 6BA6, 6AV6, 6AQ5, 6X4, but I would like to find a circuit or something that will confirm various voltages are correct.
The photo in the earlier post of a P65MEQ is exactly the same as mine.
All suggestions gratefully accepted.
Harold
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Location: Sydney, NSW
Member since 28 January 2011
Member #: 823
Postcount: 6761
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I still see no front-on photo of a P65 in that earlier post. All I see are links to under-chassis photos.
The models that I posted there are P64 (green) and P64MEQ/MEC (grey).
So, are you saying yours is exactly like the P64MEQ/MEC?
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Location: Cameron Park, NSW
Member since 5 November 2010
Member #: 770
Postcount: 409
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The photo of the P65 is in post #7 and this is identical to mine in appearance.
The photo here is from the earlier post, not my radio, but the other image on that post shows the model as a P65 MEQ.
As the P64 was in the last volume of AORSM, I guess that is why there is not as much info around on the P65 series.
GTC, my radio is identical to your photo of the P64MEQ, as far as I can tell. I will check out Radiomuseum for valve line up etc., to se if I can pinpoint the differences.
Harold
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Location: Blue Mountains, NSW
Member since 10 March 2013
Member #: 1312
Postcount: 401
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The P64 is the Hotpoint version of the AWA 461MA. The 5 valve version of the 461MA is the AWA 563MA, Radiola 5 so I'm guessing my your P65 is the Hotpoint 'clone' version of this. The circuit for the 563MA is on Kevin Chant's website.
Cheers,
Warren
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Location: Cameron Park, NSW
Member since 5 November 2010
Member #: 770
Postcount: 409
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I have just looked at the AWA 563MA and it appears that is the one. The valves are correct and even the pinout of the plug/socket connection to the clock is identical.
Thanks Warren
Harold
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Location: Blue Mountains, NSW
Member since 10 March 2013
Member #: 1312
Postcount: 401
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Glad that worked out. I've got both the AWA versions although I haven't got around to recapping them yet. Both the clocks work and luckily have a full set of knobs. Strangely, one of them takes off backwards for about 15 seconds before reversing and going in the correct direction. One of life's little mysteries.
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Location: Sydney, NSW
Member since 28 January 2011
Member #: 823
Postcount: 6761
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Thanks. I missed that image link.
Quite a confusing combination of model names and circuits. Seems you have what you are seeking now.
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Location: Oradell, US
Member since 2 April 2010
Member #: 643
Postcount: 831
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Location: Canberra, ACT
Member since 23 August 2012
Member #: 1208
Postcount: 584
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Scraps:Strangely, one of them takes off backwards for about 15 seconds before reversing and going in the correct direction. One of life's little mysteries.
That's an interesting teaser. On the AWA docs the clock motor seems to be 240v syncrhonous with no transformers or rectifiers to fail. I wonder if the bearings are sticky and delaying the rotation just enough to reverse the affect of electromagnetic impulses - like the way you can see a spoked wheel appearing to spin backwards when film frame-rate is at a particular factor of spoke displacement rate?
I've never heard of this happening with a synchronous turntable motor though. Is there some kind of mechanical ratchet to prevent it?
I'll be intrigued to know whether simple lubrication of the motor ends that effect.
Maven
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Location: Cameron Park, NSW
Member since 5 November 2010
Member #: 770
Postcount: 409
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The motor used in these clocks can in fact start in either direction. Earlier, non self starting, need a spin in the right direction to start, bur a self starting one can start either way, perhaps due to the instantaneous phase of the 50 cycle supply.
These have a ratchet mechanism, or, in the case of these AWA or Hotpoints, a spring clutch to detect reverse direction and jog it back the other way.
I had an article in the HRSA mag. recently, describing the restoration of a British Goblin radio and did quite a bit of research on this subject.
Harold
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Location: Blue Mountains, NSW
Member since 10 March 2013
Member #: 1312
Postcount: 401
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That makes sense, depending on whether power is applied on the up or down cycle. A neat mechanical solution to an electrical dilemma. Mystery solved, thank you. I will sleep easier tonight
I'll have to dig out your article, I remember reading it but not the details.
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