[Kenwood] Re: I smoked my TS-930S

[Richard Keller]

Many thanks to all who responded. Exactly what I needed to
know. Will contact John separately.
73, Dick KF4NS
St. Petersburg, FL 33714 USA
Keep the glow!

----- Original Message ----- 
From: "Jerry bishop" <gsbishop at charter.net>
To: "Richard Keller" <rkeller at ij.net>
Sent: Monday, April 18, 2005 7:43 PM
Subject: Re: [Kenwood] Re: I smoked my TS-930S


| Hi- See yr problem- Might get ahold of John-KI4NR- Does
real good on
| 930&940's Fixed mine.TKS,Jerry W8KQ
| ----- Original Message ----- 
| From: "Richard Keller" <rkeller at ij.net>
| To: <kenwood at mailman.qth.net>
| Sent: Monday, April 18, 2005 7:06 PM
| Subject: [Kenwood] Re: I smoked my TS-930S
|
|
| > Model is TS-930SAT serial #4080206.
| >
| >
| > The problem is just as my nose suspected, the driver
| > transistors MRF485's, and the two 22 ohm resistors. I
did a
| > search and came up with a mod from ON7WP which replaces
the
| > drivers with FET's and some other parts are
changed/removed.
| > Has anyone tried this mod? He also says to replace the
| > regulators Q1 and Q2 in the P.S. circuit "which are also
| > bad" but I prefer to test first before I start replacing
| > parts unnecessarily. I realize it is mainly a voltage
| > problem with the underrated 485's, but is there another
| > option other than the drastic change to FET's?
| >
| > Is there someone out there who performs an upgrade for
the
| > FINAL UNIT?
| > By the way, is Jose EB5AGV still around?
| >
| > Thanks and 73, Dick KF4NS
| > St. Petersburg, FL 33714 USA
| > Keep the glow!



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