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Other Vintage Household Electrical or Electromechanical Items For discussions about other vintage (over 25 years old) electrical and electromechanical household items. See the sticky thread for details. |
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28th Dec 2020, 5:12 pm | #1 |
Tetrode
Join Date: Jan 2016
Location: Shepperton, Surrey, UK.
Posts: 91
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Hanimex La Ronde slide projector focus problem
Bought this recently to view a few old slides. The electronic focus doesn’t seem to do anything, when I press the switch on the (non-wireless) remote nothing happens.
The pic shows a motor (?) above the lens carriage with an eccentric cam - the brass part in the centre of the pic - which must move something but I can’t see what. Also the shaft doesn’t turn by hand. I believe power is getting through as the nearby lamp dims when I operate the switch. Any comments as to how to get this working gratefully received. |
28th Dec 2020, 5:19 pm | #2 |
Rest in Peace
Join Date: Apr 2008
Location: London, UK.
Posts: 2,508
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Re: Hanimex La Ronde slide projector focus problem
I think the motor has an integral planetary reduction geartrain, so it might not be possible to turn the shaft even under normal conditions. It sounds like this might however be seized, as there would probably be some visible movement of the cam if the motor and geartrain were free but the linkage jammed elsewhere.
I would remove the motor and gearbox assy. which is probably as simple as removing the strap from over it, and test outside the projector. |
28th Dec 2020, 6:14 pm | #3 | |
Tetrode
Join Date: Jan 2016
Location: Shepperton, Surrey, UK.
Posts: 91
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Re: Hanimex La Ronde slide projector focus problem
Quote:
By the way I worked out how it should move, it’s an eccentric spindle extension (best description I can think of) in a fixed vertical slot which moves a whole section of the carriage on a rail. |
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29th Dec 2020, 12:05 am | #4 |
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,536
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Re: Hanimex La Ronde slide projector focus problem
Could it be suffering from the same hardened grease problem that afflicts old record player mechanisms?
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30th Dec 2020, 7:10 pm | #5 |
Tetrode
Join Date: Jan 2016
Location: Shepperton, Surrey, UK.
Posts: 91
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Re: Hanimex La Ronde slide projector focus problem
Don’t think it’s hardened grease, nothing seized...
I tested the motor ex-situ and it does spin when a dc voltage is applied, what I noticed though is that the voltage needed to make it turn at more than a snail’s pace is 3 - 4 volts and the voltage I am getting across the contact points in the machine is only about 1.5 v which is barely enough to make it move itself let alone shift the lens carriage. I would assume that the lack of voltage is the problem but have no service manual to confirm this. Any further comments gratefully received... P.S. if anyone has a service or user manual for ‘La Ronde 2000 TEF’ I would love to borrow it or see the schematic. |
30th Dec 2020, 7:45 pm | #6 |
Hexode
Join Date: May 2005
Location: London 90% , Northwest England 10%
Posts: 386
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Re: Hanimex La Ronde slide projector focus problem
Is there a mechanical lever on these ones ? sometimes they work better than the electronic link if there is.
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31st Dec 2020, 11:17 am | #7 |
Tetrode
Join Date: Jan 2016
Location: Shepperton, Surrey, UK.
Posts: 91
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Re: Hanimex La Ronde slide projector focus problem
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