SB-200 Problem

[Mark Graalman WB8JKR]

 Carlos, disconnect the HV transformer winding
from the HV circuitboard and see if you still have the
problem. If so, it may be the transformer, if not it may
be a diode string or a filter capacitor.
 I'm betting on a capacitor.

 Just be VERY careful with what your doing that unit can
kill you quickly.

Mark  WB8JKR



On Wed, 12 Feb 2003 10:02:56 -0600 Carlos Avellanet <avellanet at COX.NET>
writes:
> Hi gang,
>
>   I just picked up a nice SB-200 at the Orlando hamfest.  I took it
> home and after rewiring from 220VAC to 120VAC I hooked it up to my
> FT-920 using the Ameritron ARB-704 interface and it worked
> beautifully the rest of the night.  Yesterday while listening, no
> transmit, to Southcars I heard a pop and the amp turned off.  Not
> being too familiar with it I disconnected it from the wall and did a
> quick visual and re-check my work on the power strip as per the
> manual.  I found nothing obviously wrong, no smoke, no charred
> parts.  Later I realized the front CB had popped--the one with the
> red wires.  I reset the breaker and turned power back on and stayed
> on for about a second and the breaker popped again.  I thought one
> of the tubes may have shorted out so I too them off and turned power
> on, same results.  I suspected not enough power from the outlet so I
> tried a power outlet in the garage and this time the outlet 15 amp
> breaker tripped as soon as I turned the amp on.  The amp CB did not
> pop. I am afraid of hooking it up again and making it worse.  The
> amp was initially plugged to an outlet connected to a 20 amp and I
> am assuming it should be sufficient, specially with the amp at idle.
>  Has anybody here experienced this problem with their SB-200?  Any
> help pointing me in the right direction will be appreciated.
>
> Carlos. KF4RRN
>
> -----------------------------------------------------------
> This list is a public service of the City of Tempe, Arizona
> -----------------------------------------------------------
>
> Subscription control -
> http://www.tempe.gov/lists/control.asp?list=HEATH
> To post - HEATH at LISTSERV.TEMPE.GOV
> Archives - http://interactive.tempe.gov/archives/HEATH.html
>

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html