[RTTY] ZS2EZ - Help Needed!

[W4GKM]

Barry I have sent your email to Martin Jue who owns Ameritron and ask if 
he would help you out on this he is a good friend of mine and hopefully 
he can.

Nick
W4GKM



On 1/25/2017 2:30 AM, Barry Murrell ZS2EZ wrote:
> Hi All
>
>   
>
> I am desperately in need of some help!!
>
>   
>
> Right at the start of the 2016 CQ WW RTTY Contest my Ameritron AL-811
> amplifier made a loud hissing noise and a loud bang as it blew a fuse (just
> as I started tuning up on 20m). I replaced the fuse, and subsequently every
> time I switched the amp on the fuse blew again. Following a procedure
> suggested by Mike W4AAW I established that the problem was not a bad tube,
> but was a power supply issue. As I am hesitant to prod around with high
> voltages, I took the amp to my very good friend Andre ZS2ACP, who has MANY
> years of experience with such equipment. Andre has established that there
> are at least two faulty components that need to be replaced before he can
> trace any further - and both are unobtainable in our home town of Port
> Elizabeth (here we only have 2 outlets that sell ANY components, and they
> only carry very basic stuff) and are even proving unobtainable via the
> online South African suppliers!
>
>   
>
> The components in question are:
>
> 1.       Capacitor  210mfd  450VDC  POS + 85C  MAX Surge 525VDC  (with
> "stud" terminals)
>
> 2.       Carbon Resistor 50K 7W
>
>   
>
> I have posted photos on my website at http://www.zs2ez.co.za/amp-parts.html
>
>   
>
> In desperation I am reaching out to my fellow-RTTYers - running Low Power
> from way down at the bottom of Africa is really not easy, and due to our
> disastrous economy new equipment is just NOT a proposition (our exchange
> rate versus the Dollar has slumped from R6/$ some 4 years back to R15/$
> currently!!). Hopefully SOME kind soul out there will be able to help me get
> my amp up and running again!!
>
>   
>
> I still dream about owning a 1KW solid-state amp one day - but will need to
> win the Lotto first!!  They cost nearly as much as my ANNUAL gross income!!
> :(
>
>   
>
>   
>
> 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 :  <http://www.zs2ez.co.za/> www.zs2ez.co.za
>
>   
>
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>