SB-200 Problem

[rayfri]

Carlos:
The most likely problem is one or more of the filter capacitors went bad.  Now if you check the caps using the resistance method (one way then the other with the ohmmeter leads) they may seem to be okay, but may be breaking down under voltage.  I had the same problem with a friend's sb 200....   if you keep turning it on and popping the breakers, eventually one or more of the capacitors will become a dead short.  Dont wait that long....I didnt wait..   get some new filter caps and replace them... I'm 99 percent sure that will solve your problem.
     I found replacements for 5 bucks apiece at a local electronics wholesale place...
Ray  wa7itz


Carlos Avellanet wrote:

> 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
>
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