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Author Topic: sx40c meter repair  (Read 395 times)
AE7GL
Member

Posts: 62




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« on: January 30, 2006, 02:37:34 PM »

I have a Diamond SX40C swr meter that's stopped working. On inspection I find one capacitor that's cracked where the lead comes out. It's a small ceramic cap. The only markings on it is the number "102" with a line under it. I can't find a schematic online for this meter. According to a couple capacitor identification web pages it may be a 1,000pf cap. Does this sound right? Does anyone know were I can download a schematic? I'd sure like to get it working again.

Thanks,
Charlie.
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WB2WIK
Member

Posts: 20595




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« Reply #1 on: January 30, 2006, 04:55:17 PM »

I doubt they ever published a schematic.

Have you contacted the importer, RF Parts Co., to ask them?

The "102" labeled capacitor probably is 1000 pF.

WB2WIK/6
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WB6BYU
Member

Posts: 13234




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« Reply #2 on: January 31, 2006, 12:37:07 PM »

Certainly it is 1000pf = 0.001uf = 1nf.  It should be safe
to replace that capacitor and see if the meter works even
if you don't have a schematic for the unit.

In fact, I usually find that it is faster to trace the
circuit of small pieces of equipment than to spend much
time looking for a schematic, particularly if there are
less than 30 parts involved and no complex logic.
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AE7GL
Member

Posts: 62




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« Reply #3 on: January 31, 2006, 04:33:15 PM »

Thanks guys. I have an email in to them but haven't heard from their service department yet. If I don't hear soon I'm going to just replace that cap and see what happens.

Thanks again.
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