HP-23B Power Supply upgrade...

[Bernie Murphy]

I purchased Mike's kit and the result was quite satisfactory.

More than likely, if the radio is dead, you may have blown diodes.

Best to check all the voltages and see what is up.

Getting replacement "cans" is not possible. Some people have gutted the old 
cans (not me!) and placed a new cap in the original can and then filled in 
the can with epoxy.Sounds like a messy job -- not sure if the insides are 
toxic. The leads on the cans act as tie points so it is pretty hard to do a 
nice repair job with substitute caps.

The transformer in these beasts are pretty tough so hopefully the 
transformer is not at fault.

Regards,

Bernie, VE3FWF, Ottawa, Canada.

http://qrz.com/ve3fwf



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----- Original Message ----- 
From: "Roy Morgan" <roy.morgan at NIST.GOV>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Wednesday, November 07, 2007 1:36 PM
Subject: Re: [HEATH-TEMPE] HP-23B Power Supply upgrade...


> At 09:47 PM 11/6/2007, KC2RVD wrote:
>>So I went to turn on my MR-1 and MT-1 powered by a HP-23B power supply, 
>>and got nothing.  The power supply does not seem to be working.  So I am 
>>taking this opportunity to go through my HP-23 Power Supply, and do 
>>modernization...(I.E. PCB, and new components)  Anyone have a good source 
>>for replacement capacitors?? or any tips on thing I should look out for??
>
>
> See:
>
> http://www.collinsra.com/cra_album/0012/cra_0012.html
> for use of the supply for Collins equipment.
>
> > http://www.theheathkitshop.com
> >
> > order from :
> > mike bryce, WB8VGE
> > 955 manchester ave sw
> > north lawrence ohio 44666
> for the
> <http://www.theheathkitshop.com/hp23r.html>Heathkit HP-23 ps upgrade
>
> This if from my notes:
>>Mouser has a wide selection of replacement capacitors for the Heath HP-23
>>power supply.  Tim Reese has a good article on replacing and/or rebuilding
>>electrolytic capacitors.
>>http://www.nmr.mgh.harvard.edu/~reese/electrolytics/
>
>
>>I believe I can get some most/all of the parts I will need from 
>>mouser/digikey, but I could be wrong.
>
> You are right.
>
> Roy
>
>
> - Roy Morgan, K1LKY since 1959 - Keep 'em Glowing
> 13033 Downey Mill Road, Lovettsville, VA 20180
> Phone 540-822-5911   Cell 301-928-7794
> Work: Voice: 301-975-3254,  Fax: 301-975-6097
> roy.morgan at nist.gov -- 
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