[Kenwood] Re: Kenwood Oh no! My 930S smoked

[peter markavage]

There were at least two iterations to the TS-930S service manual,
B51-0960-10: 75 pages, 1 11X17 sheet p39-40 and 1 17X23 double-sided
sheet that has Signal Unit and overall schematics; and B51-0960-20: 84
pages, 2 11X17 sheets, p.41-42 and p 43-44 and 2 17X23 double sided
sheets for the Signal Unit and overall schematics. The "-20" covers
serial numbers from S/N208XXXX-309XXXX and from S/N310XXXX-to the end.

Pete, wa2cwa
www.manualman.com

On Mon, 11 Apr 2005 19:20:31 -0400 "Richard Keller" <rkeller at ij.net>
writes:
> Ok, Thanks Maury. I had missed two screws on the power
> supply side that were totally hidden by the B+ leads. Boy,
> it sure takes a long narrow screwdriver to get those out. I
> don't want to know how difficult it is to replace those
> screws.
> 
> Now that I have it apart, I find that my service manual copy
> is very low quality and missing some pages. Does anyone have
> the manual so I can maybe get a copies of the missing pages
> (41 thru 44)?  Also, at the end of the manual there are
> additional pages that begin with page 29 and go to page 38,
> all diagrams so that means pages before 29 and after 38 (if
> any?) are also missing.
> 
> Before any testing, I did the smell test since it smoked and
> zeroed in on Q2 and Q3 (markings faint), R9&10 read shorted.
> Guess I lucked out, finals are likely ok. Looks like it is a
> bear to get the circuit board away from the heat sink. MORE
> screws to take out!
> 
> Thanks and 73, Dick KF4NS
> St. Petersburg, FL 33714 USA
> Keep the glow!
> 
> 
> ----- Original Message ----- 
> | Message: 6
> | Date: Sun, 10 Apr 2005 21:09:42 -0700 (PDT)
> | From: Maury Guzick <w5io at sbcglobal.net>
> | Subject: Re: [Kenwood] Oh no! My 930S smoked.
> | To: Richard Keller <rkeller at ij.net>,
> kenwood at mailman.qth.net
> | Message-ID:
> <20050411040942.90443.qmail at web80802.mail.yahoo.com>
> | Content-Type: text/plain; charset=us-ascii
> |
> | Richard,
> |
> | There are screws on top and bottom that have to come out
> and you have to pull the fan and heat shink for the main
> power loose. The unit should come out easily.
> |
> | Good luck.
> |
> | 73's
> |
> | Maury
> | W5IO
> |
> |
> |
> | Richard Keller <rkeller at ij.net> wrote:
> | Well, for many years it has been the best rig I never use.
> | In the last 9 years, I have no more than a dozen contacts
> | with it. Have been using my classics. I turned it on to
> | check the time and turned around to the bench. Then I
> | smelled the smoke and turned around to see it billowing
> out
> | of the right rear. The mike must have had something laid
> on
> | the lock button of my MC-80. With all the junk on the
> desk,
> | it is no wonder it never happened before.
> |
> | The antenna was not connected. I thought it had a
> protection
> | feature if the thing was keyed without a resonant antenna.
> | Anyway, I can fix it but the service manual does not have
> a
> | disassembly picture for the final unit. How in the world
> do
> | you get that darn thing out? I removed all the screws I
> | could find but it won't budge.
> |
> | What is the most likely failure? I suppose it is the final
> | amps. Model is TS-930SAT serial #4080206.
> |
> | Thanks and 73, Dick KF4NS
> | St. Petersburg, FL 33714 USA
> | Keep the glow!