bad day for 38S

---------

From: Steve Miller (kg7pv@teleport.com)
Date: Wed Mar 26 1997 - 22:39:37 EST


Hi all,
First let me say thanks to Chuck, Jim, Bob, Ron and the others who spent all
the time reading my msgs/crys for help with the 38s declining pwr out.
Ended up replacing L2 and C25. Had a nice clean 3.5 watts out steady(!) for
over an hour. Had replaced lots of parts but it was the freeze spray that
showed what I think were the bad parts or where the trouble was.
Came into the shack this am to check the rig. 3.5 on the nose, ok time for
a qso.

Pop...smoke...the qrp ps went off a cliff and took the PA with it. No
problem since I had another......can't get the rig to tune up.....think I'll
replace the 8V reg since the shock that took out the final (yes it was fused
but my crummy eyes :-( mistook a 20A for a 2A fuse ) might have damaged
it....no problem since I have another.....still won't tune up
right....ahhhh!!!...the NTE package says 8V but it is a 10V part....the rig
doesn't like it. Don't have another.

So until the parts house opens, does the above senario sound like the U4 is
bad...receives fine and does xmit alot of crud. Of course U4 is the only
chip soldered in.
Or is it likely that U4 is ok and the 10V is the issue?

Thanks and stay tuned. 73

Steve Miller kg7pv @ teleport.com Portland, OR
(CN-85) Norcal #308 QRP-L #109 ARCI # 9230


Search QRP-L Archives

[ QRP-L Archive | ]
[ 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 ]

---------

This archive was generated by hypermail 2b29 on Fri Jun 02 2000 - 11:33:19 EDT

kd4ab@kd4ab.org