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

[Dennis McGrew]

Hi Dick,

Saw your post....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? 

I had driver failure in a 930 several years ago.  I ended up replacing the very expensive, matched, lo beta, MRF485's with 2SC1969's. The 2SC1969 is a clone of the 485 made for the CB market. It has identical spec's and is much cheaper to buy. I bought several and rigged up a test circuit to match them.  Wasn't very difficult to do and they worked fine for me. 

RF Parts sells matched 485's but I couldn't afford their asking price. The 1969's are available  from several suppliers, as well as the NTE236's.   Good luck with your 930.

73,  Dennis  K8IFF