Fix your Radioshack DX-390 yourself.

Fix your Radioshack DX-390 yourself.

Post by Jack Kovar KE0 » Sun, 07 Apr 1996 04:00:00

        Is you DX-390 receiver dead or very poor sensitivity on AM?
        The FM section works great?
        I just fixed mine for $1.39.
        I blew out the front end with a static charge into the antenna.
        I replaced one part and it works better then before with ECG
        replacement part.

        Let me know if you have had this problem and I will hel you fix
        it and also suggest a mod to protect the front end failures.
        Less than TWO BUCKS TOTAL one phillips***driver to get radio
        opened up.
                                Jack Kovar

 
 
 

Fix your Radioshack DX-390 yourself.

Post by WB3 » Mon, 08 Apr 1996 05:00:00



Quote:>    I just fixed mine for $1.39.

This reminds me of a very odd defect that was experienced by several
models of Sony AM/FM stereo receivers back in the 70's.

Sony had plated the tuning capacitors with some type of alloy that
would cause microscopically-thin strands of crystalline metal to
"grow" between the plates after a few years of use.  The strands were
totally invisible to the *** eye, but would short the capacitor and
cause the front end to go dead.  The cure was to either brush
between the plates with a very soft brush, or blow out the cap with
compressed air.

I was in the service business the first time I ran into this, and it
was exceedingly difficult to convince the customer that we had
repaired his stereo with air.  I finally had to show him the service
bulletin from Sony.  ;)

73,
Jack  WB3U

 
 
 

Fix your Radioshack DX-390 yourself.

Post by Lennard Carpent » Tue, 09 Apr 1996 04:00:00


:       Is you DX-390 receiver dead or very poor sensitivity on AM?
:       The FM section works great?
:       I just fixed mine for $1.39.
:       I blew out the front end with a static charge into the antenna.
:       I replaced one part and it works better then before with ECG
:       replacement part.

:       Let me know if you have had this problem and I will hel you fix
:       it and also suggest a mod to protect the front end failures.
:       Less than TWO BUCKS TOTAL one phillips***driver to get radio
:       opened up.
:                               Jack Kovar

:      

  Why not jsut post the info here in the group so everyone can read it.

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                 A Believer in Welland, Ontario Canada