[Elecraft] Power Supply Question

[Dan Barker]

By scanner, I meant an image scanner to scan the schematic. Since you don't
have a schematic, you don't need to scan it<g>.

I've never seen a battery with recent use show 0 volts unless it's connected
to something. If you disconnect it, it should show at least a few tenths of
a volt.

0v on the P/S could be a fuse or breaker, but without a schematic it's going
to be tough to troubleshoot by email. Some of the obvious things to check
would be continuity from the leads to the circuit board, and wall voltage to
a transformer, and inspect anthing that looks like a protection device to
see no voltage drop across it.

There may be something obvious, like a burnt part. If the battery really
failed shorted, then turning on the PS should have popped a fuse, maybe even
in your wiring from the PS to the load!

Good luck. The schematic would really help. Google may help you find one.

Dan / WG4S / K2 #2456

-----Original Message-----
From: Fred Jensen [mailto:k6dgw at foothill.net]
Sent: Monday, December 12, 2005 6:51 PM
To: Dan Barker
Subject: Re: [Elecraft] Power Supply Question




Dan Barker wrote:
> What's the battery voltage in the K2 with the power cable removed?

0V.  The battery is an external gel cell.  I don't have the internal
battery for my K2.

> What's the P/S output voltage with all load removed?

Right now it is 0V.  It won't turn on.

> Do you have a schematic of the P/S?

No.  I have the Yaesu manual, but there is only a block diagram of the PS.

> Do you have a scanner?

My 3 HT's scan, as does the FT-847 (if I could turn it on), but I don't
have a broad spectrum scanner.

Fred K6DGW