[Central-Electronics] CE100V

[w7fe]

Hi Tom,

Sure. it's always a good idea to do an  initial boatanchor power up slowly 
with a Variac, like about 10 minutes or so while watching for excessive 
current, listening for odd noises, and looking for smoke. If your Variac is 
not metered, the series light bulb is a fine alternative.

Be sure to acquaint (or re-acquaint) yourself with all of Nick Tusa's (K5EF) 
excellent information on the 100V at http://www.ce-multiphase.com/ . While 
the 100V is arguably the finest example of both electrical and mechanical 
engineering applied to any piece of ham gear ever made, it is complex, and 
Nick has kindly offered his knowledge and experience to us via the website 
to help in making our restorations successful. The work is not terribly 
difficult, but patience is necessary. And, you'll find that a remanufactured 
PTT relay coil, new power supply electrolytics, and some other parts are 
available through Nick. And if you can catch him in a spare moment, he'll 
even offer advice on issues that may not be covered on the website.

By the way, the lumpy feel to the PTO drive can be dried grease in the 
Jackson drive assembly (be very careful when disassembling it -- in addition 
to the usual 5 ball bearings, it has a race full of very tiny ball bearings 
which can get lost in a flash. Use a tray with sides on it to avoid this) 
and/or a dried out bearing in the PTO's internal drive assembly. If it turns 
out that this bearing has stiffened up, it is a standard size and a 
replacement is available at any bearing supply house. A little ingenuity is 
necessary push it out of its housing, as I recall. Also, the foam in the PTO 
can will likely have turned to goo, so be prepared to replace it with some 
suitable material. And wait until you see the linearization adjustment 
scheme -- really clever.

Good luck, and I'm sure thay you'll really appreciate the 100V for its 
innovative design, high precision, and ease of operation.

73 de Stu, W7FE
Henderson, NV

----- Original Message ----- 
From: "Tom Hankins" <thankins at arvig.net>
To: <Central-Electronics at mailman.qth.net>
Sent: Friday, April 22, 2016 7:06 PM
Subject: [Central-Electronics] CE100V


> Hi to the list
>
> Looking for info-I picked up a pretty nice 100V that has an unknown 
> history
> and no idea when it was last used or when it was last working. Initial
> inspection shows everything to be original and very little if any hands 
> have
> been inside. I have not worked on the 100V or 200V but have a fair amount 
> of
> experience with other CE gear including the 10A, 10B. 20A, 600L, 458 VFO,
> and a lot of the scopes and slicers. Would it be wise to bring this thing 
> up
> with a variac??  My line voltage here I about 121 and I probably need to
> keep the supply down to 115 to 117 for initial testing but am wondering if
> it would be prudent to bring it up slow.  I have worked on a fair amount 
> of
> boat anchor gear and usually just go for it. Only piece that showed that 
> to
> be ill advised was the 1st 10A I worked on and it smoked a power supply
> resistor because of a shorted filter cap. Any good words of wisdom would 
> be
> welcome.
>
> BTW this one has the lumpy-feeling VFO and so when I find if it's working 
> or
> not I will be removing the VFO for a rebuild and or cleaning.
>
> Tom Hankins
>
> K0EOA
>
> ______________________________________________________________
> Central-Electronics mailing list
> Home: http://mailman.qth.net/mailman/listinfo/central-electronics
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Central-Electronics at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html