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Author Topic: sb 200 power transformer  (Read 3089 times)
W8JI
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« Reply #15 on: September 25, 2011, 04:17:13 AM »

I disagree with rebuilding an amplifier totally, unless someone hacked it all up and it is nearly basket case or we are changing funtioning totally.

Measuring voltage through the HV system is not a good thing, and is almost never necessary. If I wanted to conform the transformer HV winding bad, I would measure transformer secondary resistance.  I would not measure voltage.

If I had a transformer out and reinstalled it and the HV quit working, I would make sure I have the secondary windings wired correctly and confirm winding integrity by using an ohmmeter on a cold amplifier.

If the transformer is not smoking, stinking, or blowing line breakers the only problem can be a wide open secondary........ or how something is wired after the secondary.
73 Tom 
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VA3GUY
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« Reply #16 on: February 16, 2012, 11:05:10 AM »

I know this thread is old but I have an amp in the same condition (no HV) so I was wondering if this problem was resolved and if so, what was the outcome?

Thank you...Guy
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K8AXW
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« Reply #17 on: February 18, 2012, 09:01:00 PM »

Quote
I rebuilt my wife from bottom up, and she ran off with another man.


Tom:  Money well spent!  Er..... how much was that?
« Last Edit: February 19, 2012, 11:24:06 AM by K8AXW » Logged
W0OPW
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« Reply #18 on: February 23, 2012, 10:18:33 PM »

There's a screw loose somewhere. Seriously.  Corrosion on these old amps is a serious problem underneath those screws and nuts.
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