I always replace the entire bank of capacitors with new, long-life identical
units. Electrolytics age, so when one or more go, that's a good indication
of the state of the remaining ones. Once I'm in there I do them all.
Ed W0YK
__________________________________________________________________________
-----Original Message-----
From: RTTY [mailto:rtty-bounces@contesting.com] On Behalf Of Robert Chudek -
K0RC
Sent: 25 January, 2017 20:20
To: rtty@contesting.com
Subject: Re: [RTTY] ZS2EZ - Help Needed!
I am concerned that the capacitor is one in a bank of 4 that are used in
the AL-811 HV power supply. It is obvious the one in the picture
"erupted" but I question whether replacing only one capacitor in the HV
circuit would only temporarily solve the problem. Another cap in that
bank could let loose soon thereafter and create another repair cycle.
Is there a non-destructive method to verify the remaining capacitors are
still up to the job? With easy access to parts and relatively low cost
shipping within the USA, this is probably of less concern to us "over
here."
What do others think?
73 de Bob - KØRC in MN
------------------------------------------------------------------------
On 1/25/2017 9:55 PM, Lee Roberts wrote:
> There may be much cheaper alternatives for shipping. I've sent packages
> to Costa Rica thru a shipping service based in Florida - it was MUCH
> cheaper than using FedEx or UPS.
>
>
> On 01/25/2017 08:21 PM, Pete Smith N4ZR wrote:
>> Hi Barry - In my limited experience, DHL is horrifically expensive to
>> your part of the world - I once tried to arrange return of a 2-pound
>> QS1R from Namiibia for repairs, and was told DHL would be several
>> hundred US$ each way. For packages under 4 pounds in weight, First
>> Class postage isn't too bad, and my package made it to Windhoek OK
>> that way, but I was told it was iffy. Frankly, I figured that in that
>> case I could re-send the pacjkage several times before it added up
>> even to Priority Mail International, never mind DHL
>>
>> If you'd like to give this a try, I can order the parts and transship
>> to you, then get reimbursed via PayPal. If you want to do this, let's
>> take this off the reflector.
>>
>> 73, Pete N4ZR
>> Check out the Reverse Beacon Network
>> at <http://reversebeacon.net>, now
>> spotting RTTY activity worldwide.
>> For spots, please use your favorite
>> "retail" DX cluster.
>>
>> On 1/25/2017 2:13 PM, Barry Murrell ZS2EZ wrote:
>>> WOW!! What an amazing response!!!
>>>
>>> I had NO idea that anyone could get parts directly from Ameritron
>>> (MFJ)....
>>> would be awesome if I could source those components at those prices!!
>>> Even
>>> my limited budget can stretch to that!!
>>>
>>> Pete N4ZR brings up a couple of interesting points : Import duty is
>>> not a
>>> problem if sent by a private individual as a "gift" under a nominal
>>> amount
>>> (I think it is about $100)... bust reliability of mail is a HUGE problem
>>> here - our National Post Office is effectively bankrupt, and often
>>> cannot
>>> afford to pay airfreight for parcels to outlying cities! I am 1000km
>>> away
>>> from the main "hub" in Johannesburg, and often airfreight items can lie
>>> there for several weeks before being forwarded (if they make it to their
>>> destinations at all). For example, my mother received a Christmas
>>> card from
>>> a relative in the UK (posted 2 weeks before Christmas) on this past
>>> Monday!!
>>> I unfortunately do not have any contacts travelling anywhere abroad for
>>> several months (my friends John ZS6JON and Paul ZS6NK are going to
>>> Friedrichshafen this year, but that is now only in July). As this
>>> would be a
>>> small and light parcel, it would probably be practical and affordable to
>>> have it sent via DHL or similar - at least then I would be assured of
>>> getting it!!
>>>
>>> Would be really great if someone that can accept Paypal could manage
>>> to get
>>> these items from Ameritron (to be sure of no further issues I would
>>> ideally
>>> like to get 2 of each!) and forward them to me via DHL/Aramex or similar
>>> labelled as a "gift", and I could then reimburse via Paypal!!!
>>>
>>> Thanks SO much for all the responses - really appreciated!!
>>>
>>>
>>> 73 de BARRY MURRELL ZS2EZ
>>> KF26ta - Port Elizabeth, South Africa
>>> EPC#0558 DMC#1690 WCC#030 30MDG#4081
>>> DXCC(mixed)#41,146 DXCC(RTTY)#1,916
>>> DXCC(phone)#34,990 DXCC(CW)#11,714
>>> DXCC 40m,30m,20m,17m,15m,12m,10m
>>> WAS Triple Play #492 WAS(RTTY)#538 WAZ(RTTY)#185 WAE-I(mixed)#72
>>> WAZS(mixed)#214 AAA#1569
>>> AS ZR6DXB: VUCC(50MHZ)#1,334 UKSMG WAE(Silver)#75 UKSMG AFRICA#22 WAC
>>> (Satellite)
>>> website : www.zs2ez.co.za
>>>
>>> -----Original Message-----
>>> From: RTTY [mailto:rtty-bounces@contesting.com] On Behalf Of W0MU Mike
>>> Fatchett
>>> Sent: Wednesday, 25 January 2017 5:41 PM
>>> To: rtty@contesting.com
>>> Subject: Re: [RTTY] ZS2EZ - Help Needed!
>>>
>>> The resistor is Ameritron part 107-4500 $2.40
>>>
>>> The Cap is Ameritron part 270-6210-7 $13.53
>>>
>>> From MFJ. I assume they can be found cheaper elsewhere.
>>>
>>> W0MU*
>>> *
>>>
>>>
>>> On 1/25/2017 1:30 AM, Barry Murrell ZS2EZ wrote:
>>>> 210mfd 450VDC POS + 85C MAX Surge 525VDC (with "stud" terminals)
>>> _______________________________________________
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>>> http://lists.contesting.com/mailman/listinfo/rtty
>>>
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>
--
73 de Bob - KØRC in MN
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