Hello,
I am an Electronic Technician Chief in the US Navy overseas. I have
two broken radios in need of repair and need some help.
1) Heathkit HW-5400. I bought this off of Ebay and it sat for a
couple of months while I was on travel in the shipping boxes.
Finally, I got it out and plugged it in. It had power going up and
down with VSWR fluctuating. This was odd because my other radio
(Harris) had zero problems on same frequency and antenna. After a
couple of minutes of this it went kaput! Never even had a chance to
get on the air with it. I'm guessing the final or drivers? I have
origional assembly/tech manual from Heathkit. Any help in ordering
finals or ID'ing what part to buy would be great. It had 3 RTO
electronics repair stickers inside when opening and one of these
stickers showed it had been repaired right before I bought it. I
emailed RTO with zero response.
2) I have an old Kenwood TS-140 with PLL problem. I saw a couple of
posts about a capacitor that may go out on a different Kenwood model
and recommended replacement. I have a tech manual on this and any
help with what capacitor to replace on the TS140 so I can get this
back up would be awesome. Definitely a PLL problem as I get the
decimal points and then when I move the VFO frequency display
temporarily comes back and then goes back to decimal points.
Regards and advanced thanks for any T-shooting help,
ETC(SW/AW) Mike Kendall, IT9/KE6CVH

"Mike Kendall" wrote in message
om...
Hello,
I am an Electronic Technician Chief in the US Navy overseas. I have
two broken radios in need of repair and need some help.

1) Heathkit HW-5400. I bought this off of eBay and it sat for a
couple of months while I was on travel in the shipping boxes.
Finally, I got it out and plugged it in. It had power going up and
down with VSWR fluctuating. This was odd because my other radio
(Harris) had zero problems on same frequency and antenna. After a
couple of minutes of this it went kaput! Never even had a chance to
get on the air with it. I'm guessing the final or drivers? I have
original assembly/tech manual from Heathkit. Any help in ordering
finals or ID'ing what part to buy would be great. It had 3 RTO
electronics repair stickers inside when opening and one of these
stickers showed it had been repaired right before I bought it. I
emailed RTO with zero response.

2) I have an old Kenwood TS-140 with PLL problem. I saw a couple of
posts about a capacitor that may go out on a different Kenwood model
and recommended replacement. I have a tech manual on this and any
help with what capacitor to replace on the TS140 so I can get this
back up would be awesome. Definitely a PLL problem as I get the
decimal points and then when I move the VFO frequency display
temporarily comes back and then goes back to decimal points.
Regards and advanced thanks for any T-shooting help,

ETC(SW/AW) Mike Kendall, IT9/KE6CVH

Mike -

RTO Electronics is owned by Ron Oxley and I have forwarded your inquiry to
him.
There are specific Internet groups for HeathKit equipment. In fact, one
group has over 760 members worldwide.

One group is on the city of Tempe, AZ web server - as well as its archives

Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post -
Archives - http://interactive.tempe.gov/archives/HEATH.html

The HW-5400, if I remember correctly was a "joint Heath and Yaesu" endeavor
and shared some part, etc. with a specific Yaesu model.
Cleaning the rotary switch wafers seemed to be regular maintenance.

HW-5400 notes
http://www.pestingers.net/HW5400_factory_mods.htm

http://www.eham.net/reviews/detail/330


Regarding the Kenwood TS-140 .. your first source should be the Kenwood
Radio (Amateur radio division) web site
http://www.kenwood.net/

Downloads (Support Menu)

All of the Service Bulletins for this radio are on file (archive)
http://www.kenwood.net/indexKenwood....&FileCatID= 1

The specific service bulletins (jpeg files) for the TS-140 a

ASB0928
ASB0929A
ASB0929B

You may ALSO wish to look at the TS-680 notes, since this is largely a
TS-140 with 6-meter added.

The TS-430 and TS-440 had well known PLL issues (these are in the service
bulletins, such as ASB0974A/B)
You should also check the diode switching

MODS.DK by Erik / OZ2AEP is all about the presentation of information
available
Much of its content is from manufacturers service bulletins,
and user reported "mods" - untested (Erik admits that he is not an
electronic tech)
http://www.mods.dk/view.php?ModelId=517

eHam.net reviews are also good in understanding specific histories with
various models
TS-140 review
http://www.eham.net/reviews/detail/716


Greg
w9gb